HCIP-Transmission V2.5 H31-341_V2.5 Exam Dumps

dumps2023-08-29T09:24:24+08:00

HCIP-Transmission V2.5 H31-341_V2.5 exam information is useful for you to study for the test. There are 60 single-answer questions, multiple-answer questions, true or false, short response items, drag and drop items in the real Huawei H31-341_V2.5 exam, and you have 90 minutes to answer all the questions. The required passing score for the Huawei H31-341_V2.5 exam is 600. The available languages are Chinese and English. Free Huawei HCIP-Transmission V2.5 H31-341_V2.5 exam dumps are below.

Page 1 of 31

1. How many VC12 virtual TE links are supported by the same physical board or between two adjacent network elements?

2. For WDM networks, which of the following descriptions are correct?

For 10G and 100G mixed transmission networks, you can judge whether the dispersion compensation is consistent with the design based on the performance of 100G

For the OAU board, you can roughly judge the type of DCM module connected to the site according to the upper threshold of the nominal gain on the network management system - the upper threshold of the actual gain

For the OAU board, you can roughly judge the type of DCM module connected to the site according to the difference between the output of PAOUTI and the input of BAIN

For 10G and 100G mixed transmission networks, you can judge whether the dispersion compensation is consistent with the design according to the performance of 10G

3. In the following OTN frame structure overhead, which item represents the path tracing identifier?

BDI

TTI

BIP8

GCCO

4. Which of the following statements about the delay test is wrong?

The delay is divided into the delay of the store-and-forward device and the delay of the bit-forward device. Huawei devices are all store-and-forward devices

The timing starts from the entry of the first bit of the data frame, and ends when the first bit of the data frame appears on the output terminal

The time difference between the two is the delay of the bit forwarding device

The timing starts from the entry of the first bit of the data frame, and ends when the first bit of the data frame appears on the output terminal

The time difference between the two is the delay of the bit forwarding device

During the delay test, the frame rate can be greater than the throughput

5. When congestion occurs, queuing strategies can be varied. If you need to get services for the first arriving packets, you can use the () queuing strategy; if you want to ensure that the most urgent and critical business is served first, you can use the () queuing strategy: if you need to balance the delay and delay jitter of each flow, you can choose () queuing strategy; if you want to provide professional bandwidth for specific services, you can choose () queuing strategy.

FIFO, PQ, WFQ, CQ

F1FO, CQ, PQ, WFQ

WFQ, PQ, CQ, FIFO

PQ, FIFO, WFQ, CQ

6. When using the dual slot line group MSP ring, which of the following situations is the multiplex section overhead K bytes in the pass-through state?

The cross board is abnormal

The main control board is abnormal

The main control board is not in place

When the status of the multiplex section protocol controller is pass-through

7. In the network management planning process, which item is not absolutely necessary?

Network scale planning, network management deployment planning

DON network planning, OSS docking planning

Network parameter planning and reliability planning of the network management server

Network management software and hardware configuration

8. If a ROADM site adopts WSS+RMU configuration, which of the following impact on SOM is wrong?

If the RMU is used locally to add waves and has an optical amplifier, the OSNR value of the wavelength detected by the SOM in the pass-through direction will deviate from the actual value

There is an optical amplifier locally but no filter. The full-wave noise of the local optical amplifier affects the OSNR of the wavelength in the pass-through direction.

The source and sink optical amplifiers of the optical crossover at this site must be in the same network element

9. Which of the following description of the 100G mixed transmission system is wrong?

Coherent and non-coherent signals (10G and 40G ODB will affect each other, resulting in a sharp drop in performance, and isolation bands are necessary)

40G DQPSK and coherent signals will not affect each other without isolation band

10G starts from a short wavelength, and the isolation band can be filled with 40G DQPSK wavelength

The cost of mixed transmission is related to the number of transmission spans and the width of the isolation bandwidth, and has nothing to do with the FEC encoding method

10. Which of the following is the performance related to SM segment error?

OTUk_BBE

OTUk_SM_FEBBE

OTUk_SM_FEES

OTUk_PM_BBE

Page 2 of 31

11. Which of the following protections in microwave equipment does not require dual slots?

HSB

SD+FD

12. Reasons which is impossible for OTN equipment and network elements to be disconnected frequently?

When using optical monitoring, the DCC mode setting is wrong

Using electrical monitoring, the line quality is not good

NE ID conflict

Users of the same network element log in to the network element at the same time

13. Which reason for the OA_LOW_GAIN alarm is wrong?

The input optical power of the board is too high

The insertion loss between the TDC and RDC optical ports is too large (only for the OAU board)

The board that reported this alarm is faulty

The gain of the optical amplifier board is set too low

14. Which of the following statements about the main and backup channels of optical line protection is wrong?

"Initial Difference Between Active and Standby Channels (dB)"―the reference value used to set the optical power difference between the active and standby channels of the board.

"Master-standby channel difference threshold (dB)" - used to set the difference between the main and standby optical ports of the board when the optical power difference reaches a certain value, it will be regarded as a signal failure (SF).

When the difference in the optical power of the full backup exceeds the threshold, the optical switch will switch the service to the backup channel, and the set value supports query. Recommended setting is 5dB

If the current optical power difference between the active and standby channels exceeds the "main and standby channel difference threshold (dB)", the system will initiate protection switching.

15. In the path search process of the U2000 network management, the path search management module first scans the cross-connections of each network element, constructs sub-paths according to the cross-connections of adjacent network elements, and tries to merge these sub-paths at the same time. Which of the following sub-paths is legal?

Subpaths form a loop

The path does not pass through the fiber

The original destination is not the end point of the subpath or the optical port of the subnet

The sub-path terminates on the pre-configured network element

16. After which of the following steps, the rollback operation cannot be performed?

load b. to distribute

to activate

Submit

17. In order to meet the specified synchronization quality requirements, corresponding requirements must be made on the network for synchronous transmission, and the specified networking rules must be followed during network planning. Which of the following is wrong?

In one clock transmission direction, the number of stations between the transit office clocks cannot exceed 30

The number of switching office clocks cannot exceed 10

The total number of devices in one direction cannot exceed 60

18. For NG-SDH equipment equipped with dual main control boards, when the main control board is upgraded, which of the following statements is correct?

After upgrading the standby main control board first, the upgrade of the original active main control board can be completed as long as the main control board is switched through

Upgrade the active main control board first, and then upgrade the standby main control board

Complete the upgrade of the standby main control board first, then perform a hard reset on the current active main control board to make it active and standby switchover, and then upgrade the current active main control board

First upgrade the active main control board and then upgrade the standby main control board in the same way

19. Regarding the TTX board, which of the following statements is correct?

In essence, the TTX board is not a 100G tributary board, but it requires a single-slot 100G crossover capacity

8800 T64/T32 universal subrack can support TTX single board

This board belongs to the tributary board and can access 100G client-side services

TTX can do ODU4 particle electrical crossover with NS4

20. In the process of equipment installation, which of the following statements are wrong?

Wear anti-static gloves or an anti-static wrist strap before touching the device, holding the plug-in board, single board, ICA chip, etc.

Inside the cabinet, the binding interval of the cable buckle/fiber binding band of the optical fiber shall not exceed 250mm, and the binding interval of the cable buckle of the user cable shall not exceed 200mm

In order to dissipate heat, the empty slots on the network element do not need to be inserted with filler panels

When plugging and unplugging a single board with connecting cables or pigtails on the panel, unplug the connecting cables or pigtails first, and then plug in and out

Page 3 of 31

21. OptiX OSN 1800 is a compact multi-service optical transmission platform. Which of the following descriptions is wrong?

Does not support 158802 transmission, does not support external time signal access

The maximum rate of single channel is 10 Gbit/s (OTU2)

The OptiXOSN 18001 box provides a total of 4 service board slots

The OptiX OSN 180011 box provides a total of 8 service board slots

22. When configuring the dual-stage amplifier board of RAU+OAU, which position in the figure below is the best recommended position for the DCM module?

23. The clock ID can solve the possible timing loop problem. In the following networking, in order to completely solve the clock loop, how many clock IDs need to be set in total?

24. Regarding the reporting of the OTUk_BDI alarm, which of the following statements is wrong?

Only the port on the WDM side will report oTUk_BDI

The downstream station receives the OTUk_AIS corresponding to the OTU board

The downstream station corresponding to the OTU board receives the OTUk_TIM

The downstream station receives the OTUk_SSF corresponding to the OTU board

25. Regarding the description of OSS, which is wrong?

The network layer of the OSS is above the NMS, and the management of network element devices is generally implemented through the NM

The OSS system is mainly used to improve the work efficiency of equipment maintenance personnel

OSS system (Operation Support System) refers to a software system that provides operators with functions such as communication equipment performance management, inventory management, business management, and fault management.

The U2000 supports multiple northbound interfaces such as SNMP, TL1, XML, and DCORBA, which can realize rapid integration with the operator's OSS system.

26. In NG-SDH equipment, which of the following conditions will not cause TPS switching to occur?

3.3V power supply undervoltage

Abnormal 58M crystal oscillator

Abnormal chip (SD538, SA527, CPLD)

Report T_LOSEX on the working branch board

27. Which of the following performances do not need to be evaluated when expanding the wavelength division system of the existing network?

PMD parameters of the link

Bit error rate before error correction of OTU at the receiving end

Optical power flatness at the receiving end (with MCA configured)

28. Which of the following descriptions about the client-side 1+1 protection features is wrong?

OTU client optical layer dual transmission and selective reception

Protect the OTU single board and OCh optical fiber by occupying and protecting two wavelengths and using different routes for transmission

The working and protection wavelengths must be the same

Long application time and wide protection range

29. The gain of the OAU single board is 23db, and 1% of the total output power of the OAU single board is used for MON detection. Now the output optical power of the MON port is tested to be - 8dbm, and the input optical power of the IN port of the OAU single board is?

-11dbm

-13dbm

-15dbm

-21dbm

30. During the U2000 dual-system installation and commissioning, the operations that can be performed by the ossuser user are?

When you forget the password or the password expires and you cannot log in to dbuser, you can log in to the operating system as the ossuser user, and use "#passwd dbuser" in the terminal to change the password

When the U2000License file is modified to the DOS format, you can log in as the ossuser user. B executes the dos2unix command to convert the U2000License file format from the DOS format to the UNX format.

Modify the password of the admin user who logs in to the vcs client

On the Solaris or SUSE Unix platform, if you cannot log in to the graphical desktop, you can log in as the ossuser user and use the command line to restore the binary mode database

Page 4 of 31

31. In coherent systems and non-standard fiber entry scenarios, the reference point of fiber entry optical power is moved from the output port of the optical amplifier board at the sending end to the output port of the FIU.

True

False

32. For a point-to-point network, set the TIM mode on the network management system to path terminal sink "only compare DAPI".

True

False

33. The two-fiber bidirectional multiplex section shared protection ring requires the active and standby boards to be inserted into the dual slot.

True

False

34. The instrument test method is generally used to eliminate external problems of transmission equipment and docking problems with other equipment.

True

False

35. The OAU board at the 48-wave OTM site completes signal amplification.

True

False

36. Ring multiplex section protection utilizes K1 and K2 bytes to transmit switching requests to realize automatic protection.

True

False

37. SOTU stands for Single Optical Transport Unit Interface, and MOTU stands for Multiple Optical Transport Unit Interface.

True

False

38. The ECC protocol uses the network element ID as the unique identification of the network element. When NCE identifies different network elements in the interface and database, it also uses the network element ID as the keyword for retrieval.

True

False

39. The OSC monitoring wavelength is 1510nm, the rate is 2Mb/s, and the receiving sensitivity can reach -48dBm.

True

False

40. AGC can solve a multi-wavelength WDM system. When some wavelength signals are lost, due to gain competition, its energy will be transferred to those signals that are not lost, making the power of other wavelengths higher.

True

False

Page 5 of 31

41. The OTUCn signal consists of n interleaved frames of 4080 columns and 4 rows, and n can take values of 2, 4, etc., representing 200G and 400G respectively.

True

False

42. The path at the GE level is essentially a path at the Client level.

True

False

43. The indicator light of OptiXtrans E6600 LOSn is red and blinks once every 3 seconds. Which of the following is it?

The optical port of the single board reports the R_LOS alarm

The optical port of the single board reports the MS_RDI alarm

The board is not in place

The optical module is not in place

44. If a fiber break occurs between the amplifier OA and the FIU, which of the following alarms will be reported by the system?

MUT_LOS

R_LOS

OTS_LOS

OMS_LOS

45. Which of the following maintenance signals is not a proactive OAM?

RDI

AIS

46. Which of the following options is not an advantage of EDFA optical amplifiers?

High gain

High output power

The working optical bandwidth is wide

Gain Flattening

47. What operation does the PROG indicator of the NG WDM device board blink rapidly (green) indicate?

Single board hardware failure

Business is not working properly

There is an important alarm on the board

Write FLASH operation or software loading in progress

48. Which of the following descriptions about electrical layer scheduling is wrong?

Inter-board cross-connect refers to the cross-connect configured between different boards. Inter-board cross-connection dispatches ODUk services between boards in a subrack through the backplane and centralized cross-connection boards.

Intra-board cross-connect refers to the cross-connect configured between different ports on the same board.

TTA and TDC boards support aggregation mode and non-aggregation mode.

In the aggregation mode application scenario, it is necessary to cross within the board first, and then cross between boards.

All cross-connects need to be configured on the network management system.

49. Which of the following commissioning ranges should the optical power of each single wave before combining (that is, the input optical power of the combining board) be within?

Average single-wave optical power- 2dB<single-wave optical power<average single-wave optical power+ 3dB

Average single-wave optical power- 1dB<single-wave optical power<average single-wave optical power+ 2dB

Average single-wave optical power- 1dB<single-wave optical power<average single-wave optical power+ 3dB

Average single-wave optical power- 2dB < single-wave optical power<average single-wave optical power+2dB

50. When PWE3 emulates TDM services, when the UNI side interface uses CRC4-multiframe access, which emulation method does PWE3 use?

1 to 1 encapsulation

CESOPSN

N to 1 encapsulation

SAToP

Page 6 of 31

51. Which of the following services has the smallest frame period?

ODU1

ODU0

ODU2

ODU3

52. Which of the following descriptions about optical line protection is wrong?

Optical line protection is double-ended switching. In the case of a single optical fiber interruption, there will be no inconsistency in sending and receiving routes.

Use the OLP board to configure optical line protection. The RI1/T01 optical port of the 0LP board must be working, and the RI2/T02 optical port must be protection.

OLP board switching is only related to the received optical power

When protecting optical lines, use the dual-feed and selective-receiving function of the OLP single board to protect the line fibers between adjacent sites using separate routes

53. In a chain network, NE1, NE2, and NE3 are all OADM sites, and NE1 is a gateway network element, and uses OSC communication. When the optical monitoring board at the intermediate site NE2 fails, which of the following phenomena will not occur?

The optical monitoring signal between NE1 and NE3 is interrupted

The monitoring board in NE2 reports the BD_STAIUS alarm

The OSC_LOS alarm is reported on the monitoring boards in NE1 and NE3

Service interruption between NE1 and NE3

54. In the deployment or expansion scenario, alarm reversal can reverse the alarm state and reduce a large number of unnecessary alarm reports. Which of the following descriptions about alarm reversal is correct?

The setting of alarm reversal is based on the channel

The setting of alarm reversal is based on the network element

The setting of alarm reversal is port-based

The setting of alarm reversal is based on the board

55. If only all network elements in a certain subnet are out of management on the network management system, and network elements belonging to other subnets communicate normally, which of the following reasons is impossible?

Changing the IP address of the gateway NE by mistake

NMS network management failure

Misconnection or failure of optical fiber

The network scale is too large, and the scale of ECC communication between network elements exceeds the processing capacity of network elements

56. In the troubleshooting scenario, which of the following descriptions about the alarms reported when the optical monitoring board receives abnormal light is correct?

MUT_LOS

OSC_LOS

R_LOF

R_LOS

57. In the troubleshooting scenario, which of the following descriptions about the channels for obtaining signal flow information is wrong?

Network diagram of the entire network, used for segment division during fault location

Fiber connection diagram, for a single station, is the actual fiber connection diagram within the site

Wavelength allocation diagram, which can display detailed wavelength paths

Network management, which can display the signal flow of the fixed network level, and provide corresponding alarm and performance information at the same time

58. The optical monitoring channel is set up for the monitoring of WDM optical transmission systems. ITU-T recommends that 1510nm wavelength be used first. Which of the following is the recommended rate?

576Kbit/s

192 Kbit/s

2Mbit/s

64Kbit/s

59. When using the path method to create OCh, which of the following service layer paths is required?

ODUk

OMS

OTS

Client

60. Which of the following paths have nothing to do with business?

OCh

OSC

Client

ODUk

Page 7 of 31

61. For OSN series equipment, what alarm will be reported when one of the PIUs is not connected to the power supply?

POWER_DIFF_OVER

POWER_FAIL

BD_STATUS

OWER_ABNORMAL

62. For OSN series equipment, when the standby board is normal, which of the following operations will not cause the active/standby switchover of the crossover or clock board?

Hard Reset Crossover or Clock Motherboard

Logically delete the main cross and clock board

The upper and lower handle bars of the main board are opened at the same time

Issue the active/standby switchover command

63. In a 25GMSP ring consisting of four MSTP stations. When protection switching occurs, which of the following statements about alarm reporting are correct?

PS alarms are reported on the tributary board

APS-INDI alarm reported on XCS board

Report the APS-INDI alarm on the system dashboard

Report APS-INDI alarm on board

64. In terms of protection capability, which of the following topological structures has the strongest protection capability?

Linear topology

Star topology

Tree topology

Ring topology

Mesh topology

65. Which of the following is the maximum service capacity on the STM-4 bidirectional multiplex section protection ring composed of four network elements?

1008 2M

504 2M

252 2M

63 2M

66. Which one of the following networking forms that support additional service configurations.

1: N linear multiplex section

1+1 linear multiplex section

SNCP Protection

PP ring protection

67. In the Windows operating system, the log files of the U2000 program itself are stored in which of the following directories of the U2000 installation drive letter?

/U2000/server

/U2000/client/log

/U2000/server/log

/U2000/client

68. Assuming that the IP address of the U2000 network management system is: 58.251.159.100/255.255.0.0, which of the following IP addresses cannot be used as the IP address of the gateway network element to directly communicate with the U20000 network management system?

58.251.3.111

58.251.159.123

58.251.255.123

58.250.159.123

69. The input optical power of an OAU101 board in a network is -19dBm, and the output power needs to reach 1dBm. Due to the long distance, a DCM (D) module is connected between the TDC and RDC of the board, and the attenuation is 5.5 dB, then in order to meet the requirements, the gain of the board should be set on the network management?

31dBm

25.5dBM

14.5dBm

20dBm

70. The time slot used to transmit OTN optical overhead information in OSC overhead is?

TS23

TS20

TS16

TS18

Page 8 of 31

71. Which of the following is the effect of changing the network element ID of OSN3500 on the NMS?

Disruption of service

Restart the device

Network element communication interruption

NE time out of sync

72. The four-wave mixing phenomenon is the most serious when the optical signal propagates in the optical fiber of which of the following option, and the transmission damage caused by it is also large?

, 652

, 655

, 653

, 654

73. Which of the following is the OPUk payload structure identification overhead?

RES

PSI

PJO

NJO

74. The mask of an IP subnet is 28 bits, then the number of hosts in the subnet is?

75. Which of the following is not included in the basic architecture of MPLS L2VPN?

Tunnel

S-VLAN

76. The setting of alarm reversal is based on?

Single board

Network element c. port

Alert

77. The maximum cross-connect capacity of a single slot of the OSN 8800T32 enhanced subrack is?

100Gbit/s

200Gbit/s

400Gbit/s

40Gbit/s

78. Which of the following is the multiplexing method of SDH?

Flexible mapping

Asynchronous multiplexing

Flexible mapping and asynchronous multiplexing

Flexible mapping and synchronous multiplexing

79. The interval between two adjacent pointer alignment events is at least () frames.

80. The two-fiber ring topology composed of 3 network elements is arranged in counterclockwise order, when the services between A, B, CA and C occupy the 48th VC-12 in the first VC-4 on the short-path line Then the business between B and C can also occupy the 48th VC-12 time slot in the first VC-4 on the short-path line. Which of the following is the ring network protection subnet?

One way road protection ring

Subnet connection protection ring

Bidirectional MSP protection ring

All of the above are possible

Page 9 of 31

81. When the value of the S1 byte is Ox02, it means ().

G812 transfer office clock signal

G812 local data clock signal

Sync quality is agnostic

G811 clock signal

82. In the same ASON network, which of the following parameters can uniquely identify an intelligent network element within the scope of the intelligent domain?

Network element IP

Network element ID

Node ID

83. Which of the following costs is not included in the OOS cost?

Optical transmission segment overhead

Optical channel overhead

Optical multiplex section overhead

Optical channel transport unit overhead

84. Which of the following is the common point between the two-fiber bidirectional multiplex section shared protection ring and the four-fiber bidirectional multiplex section protection ring?

Section switching

Agreement required

The multiplex section protocol travels on the protection channel

The network capacity is KSTM-N

85. Which of the following are not part of the ASON control protocol?

LMP

RSVP-TE

IS-IS

OSPF-TE

86. Which of the following descriptions of the characteristics of differential protection services are wrong?

The forward and reverse paths of the business are strictly consistent

The interruption delay when the service path changes must be greater than 100ms

One-way line transmission delay is less than 10ms

SNCP can provide protection for differential service systems

87. The current sparse wavelength division multiplexing system generally works in the band from 1271nm to 1611nm. Which of the following is the channel spacing?

10nm

5nm

20nm

18nm

88. If there is no plug-in board on the hardware, which of the following indicator light of SSN1PQ1 will be red?

STAT

ACT

PROG

ARV

89. The length range of the DATA field in the Ethernet frame structure is?

46-1500 bytes

46-1518 bytes

Sections 64-1518

64-1500 bytes

90. After a certain distance of transmission in the WDM system, the optical signal-to-noise ratio of the signal at the receiving end will decrease to a certain extent. The most important reasons are?

Fiber attenuation is too large

Use of demultiplexer

Use of EDFAs

No new fiber optics are used

Page 10 of 31

91. When testing the overload point and sensitivity of the IN port of the OTU board, which of the following is unnecessary?

Optical power meter

Attenuator

SDH Analyzer

OTDR measuring instrument

92. Which of the following statements about extended ECC is wrong?

Extended ECC is divided into automatic extended ECC and extended ECC in the specified mode

Auto-extending ECC means using a straight-through cable to connect the Ethernet ports of two NEs.

The extended ECC in the specified mode means that the server and client need to be specified.

Auto-extending ECC can be enabled on up to four network elements. In manual extended ECC mode, each server can connect up to three clients

93. Which of the following is the number of VLANs that QINQ technology can provide?

4095*4095

4096*1024

4096

1024*1024

94. The frame structure of TU3 is a bit incomplete and needs to fill up the gap. This can effectively prevent which of the following phenomenon from occurring?

Bit errors

Slip code

Scrambling

Dropped frames

95. Which of the following description about 1+1 optical line protection is wrong?

The switching mode defaults to non-restorative

The switching mode defaults to double-ended switching

The default value of the initial difference between the main and standby input light is 0

The default of the main and standby input optical difference gate is 5dB

96. It mainly completes the point-to-point voice communication between adjacent stations, without dialing, and it can be connected immediately after off-hook. This PCM service is called?

Sub-rate service

Z interface extension service

FXS Hotline Service

E&M relay service

97. If the LED on the SCC board of the OSN 8800 T32 displays a value of 11, what is the subrack ID information?

No. 1 slave subrack

No. 11 slave subrack

Subrack No. 17

No. 2 slave subrack

98. Which of the following site types does not support business up and down?

OTM

OLA

FOADM

ROADM

99. On the network management system, the network element performance monitoring time is set to () minutes and () hours.

15.12

15.24

30.12

30.24

100. Which of the following statements about overhead bytes is wrong?

A1 and A2 are framing bytes. These bytes are used to separate STM-1 frames in the signal stream

JO is the regenerator section trace byte. This byte is used to repeatedly send the segment access point identifier so that the receiving end can verify its continuous connection with the designated sending end

B1 is Bit Interleaved Parity-8 (BIP-8). This byte is used to monitor the regenerator part layer for bit errors

E1 and E2 are wired bytes. These bytes are used to provide voice channels for order line connections.

Page 11 of 31

101. Which of the following is the role of the overhead TCM in ODUk?

Channel monitoring and unlocking

Path Trace Identifier Overhead

Tandem Connection Monitoring Overhead

Generic communication channel overhead

102. Which port of the M40 is the output of the 3THz wavelength OTU single board connected to?

103. Which of the following is the adjustment unit of AU-PTR?

A byte

Two bytes

Three bytes

Four bytes

104. Which of the following protocols is used to complete the verification of TE links in the ASON network?

LMP

RSVP-TE

CSPF

OSPF-TE

105. Which of the following boards can be inserted into the OSN 9800 U64 subrack?

TNF5UNQ2

TN18LSC

TN54GS4

TNV1N401

106. Which of the following is the basic requirement of the DWDM system on the light source?

The output wavelength is stable

Using the direct modulation method

Low dispersion tolerance

High transmit power

107. Which of the following statements about the definition of SDH is correct?

Hierarchies available for asynchronous digital transmission

Hierarchy of standardized digital signals that can be multiplexed asynchronously

Hierarchy of standardized digital signals that can be cross-connected asynchronously

Complete standard digital signal hierarchy provides simultaneous digital transport multiplexing and cross-connection

108. Which of the following descriptions about optical line protection and ODUk SNCP protection is wrong?

Optical line protection is switched by the OLP board, and ODUk SNCP protection is switched by the cross-connect board

Optical line protection and ODUk SNCP protection are both single-ended switching. When a single fiber fails, the sending and receiving routes will be inconsistent

Optical line protection belongs to network-level protection, and ODUk SNCP belongs to service-level protection

The switching time of optical line protection and ODUk SNCP protection is less than 50 ms. In order to avoid cable disconnection, multiple switching is triggered, and the two protections cannot coexist

109. In daily maintenance scenarios, reset is one of the common operations. Which of the following descriptions about resetting a board is wrong?

Hard reset is similar to plugging and unplugging a single board

Hard reset can be realized through network management

Long press the RST button on the main control board to realize soft reset

Soft reset can only be realized through network management

110. Items for daily equipment maintenance, excluding:

Check the cabinet and board indicators

Check the temperature, humidity and cleanliness of the computer room

Check the device for audible alarms

Check the fan box and clean the dust filter

Page 12 of 31

111. Which of the following is not an advantage of WDM?

Super large capacity and transparent data transmission

Ease of upgrade and maximum protection of existing investments

Completely replace SDH equipment

Compatible with all optical switching networks in the future

112. Which of the following is not a nonlinear effect?

Self-Phase Modulation SPM b. Disperse

Raman scattering

Four Wave Mixing (FWMM)

113. Which of the following statements about the U2000 license is wrong?

Each license file corresponds to the equipment serial number (ESN) of a 2000 computer, so it can only be used on the corresponding computer

Official U2000 licenses vary by operating system platform. You must apply for a U2000 license based on a specific operating system

The U2000 license file is named in "OXdat format

Do not modify the license file, otherwise the license file will fail

114. Which of the following protection schemes does not require subnet configuration before subsequent protection operations when you configure services on a per-NE basis?

MSP

SNCP

MSPs and SNCPs

LMSP

115. Which of the following description about the connection of NG WDM equipment to the network management computer is wrong?

The network management computer can be connected directly or through a local area network, depending on the situation

If the connection mode of the subrack is the master-slave mode, the network management computer must be connected to the main subrack.

The IP addresses of all network elements must be in the same address segment as the IP address of the network management computer.

Only the gateway NE needs to be connected to the network management computer.

116. Which of the following descriptions about pointer adjustment is correct?

Adjustment occurs when the rate (frame rate) of VC4 is higher than the rate (frame rate) of AU-4

The station detects that there is a TU pointer adjustment event in the low-order channel; it means that the pointer adjustment has occurred in the station

AU and TU pointer adjustments are adjusted in units of 1 byte

When the receiving end receives NDF inversion for 8 consecutive frames, the device generates an AU_LOP alarm (AU pointer is lost)

117. Which layer is the TCP/UDP protocol located in the ICP/IP protocol stack?

Application layer

Network layer

Data link layer

Transport layer

118. How many 64K services can a 2M bandwidth support at most?

119. Which of the following statements is correct?

When an OCh trail exists, you can directly create a Client trail, and the NMS will automatically create an ODUk trail.

The optical layer path and the electrical layer path are independent, and there is no need to delete the electrical layer path when deleting the optical layer path.

When removing the electrical layer path, the optical layer path must be deleted first.

Deactivation will delete the configuration on the network management side and has no impact on the services on the device side.

120. Which of the following is not a northbound interface provided by U2000?

XML

SNMP

CORBA

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121. Which of the following factors determine that the optical signal-to-noise ratio (OSNR) at the receiving end is reduced to a certain extent. After the signal is transmitted for a certain distance in the WDM system, the optical signal-to-noise ratio (OSNR) at the receiving end is reduced to a certain extent.

Which of the following is the main reason?

Using EDFA

Using multiplexers and demultiplexers

Do not use new fiber optics

Fiber attenuation is too high

122. The unprotected chain consists of four network elements: NE1.NE2.NE3 and NE4. Create an end-to-end VC4 path NE1-NE4. Add NE5 between NE2 and NE3 for capacity expansion. The original configuration remains unchanged. No service is configured on NE5.

In this case, the unprotected chain becomes NE1-NE2-NE5-NE3-NE4, how many VC4 paths can be searched out?

123. When creating a single-site optical crossover, an error message "The direction of the fiber cable is selected wrongly" appears. The possible reason is?

The network management time of the NE is not synchronized

"Create reverse crossover" was not selected during configuration

Device physical fiber connection error

Lack of logical fibers between boards

124. Which of the following unified line boards can support the crossover of VC, packet and ODUk at the same time?

U210

HUNQ2

UNQ2

HSNS4

125. Among the GSCC single boards of the following versions, which supported by the CF card?

N1GSCc

N4GSCC

N6GSCC

N3GSCC

126. When the OSN 8800 T32 cabinet emits an alarm beep, which of the following methods can be used to turn off the alarm beep?

Long press the RESET button on the main control board

Turn the ID switch on the main control board to O

Turn off the TEST switch on the top of the cabinet

Long press the alarm cut switch on the main control board

127. Which of the following local maintenance terminals can be used to manage MSTP devices?

U2000 LCT

U2000 Web LCT

U2000 IP LCT

All of the above

128. Which of the following description about the internal port properties of the Ethernet board is wrong?

Ingress port to the Access attribute. If the input data has a VLAN ID, discard it

For the ingress port of the Tag Aware attribute, if the input data has a VLAN ID, the received data will be transparently transmitted

For the ingress port of the Access attribute, if the input data does not contain a VLAN ID, it will be transparently transmitted directly

For the ingress port of the Tag Aware attribute, if the input data does not contain a VLAN ID, it is discarded

129. Which of the following description of replacing the main control board is wrong?

Removing and inserting the main control board will report BD_STATUS and COMMUN_FAIL alarms. After the new board goes online, these alarms need to be cleared manually.

If the software version carried on the replaced main control board is higher than the device version, you need to clear the main control board first, and then downgrade the main board software to the same version as the device.

If the software version locked on the replaced main control board is lower than the device version, you need to upgrade the software on the main control board to the same version as the device

When the main control board has 1+1 hot backup, under normal switching conditions, the replacement of the main control board will not affect the scene.

130. Which of the following description about MPLS (Multiprotocol Label Switching) is wrong?

MPLS adopts a dual-plane structure, which is divided into a control plane and a forwarding plane. The control plane is connection-oriented, and the forwarding plane is connectionless-oriented.

MPLS packet forwarding is based on labels.

In the field of packet transmission, the main application of MPLS technology is to build tunnels to carry various types of services (such as: TDM, ATM, Ethernet) transmitted by PWE3, and realize end-to-end transmission of services in the packet network.

MPLS is not a service or application, but a standardized routing and switching technology platform that can support various high-level protocols and services

Page 14 of 31

131. Which of the following bytes is the negative adjustment position of the TU pointer?

132. Which of the following statements about Raman amplification technology is wrong?

In theory, signals in all bands can be amplified

High energy conversion efficiency

Low noise index, can be used in conjunction with EDFA to improve the OSNR of the system

Using the principle of stimulated Raman scattering to amplify the signal

133. Which of the following is the basic requirement of the DWDM system for the light source?

Using direct modulation method

Relatively low dispersion tolerance

Higher luminous power

Output standard and stable wavelength

134. The main difference between an open DWDM system and an integrated DWDM system is whether one of the following technologies is used?

Wavelength conversion technology

Optical monitoring technology

Optical amplification technology

Multiplexing and demultiplexing technology

135. Which of the following descriptions about the PANEL panel on OptiXtrans DC908 is wrong?

Automatic commissioning can be started through the PANEL panel

The ETH port on the PANEL panel is the management communication interface

Pulling out the PANEL panel will affect the normal operation of the business

The network element IP can be set through the PANEL panel

136. Which of the following descriptions about the TNG2M402D board is wrong?

Support ODUK SNCP protection and client side 1+1 protection

Dual 100 Gbit/s wavelength conversion board

M402D can realize the wavelength division side optical signal adjustable in the range of 96 waves with 50 GHz spacing in the C-band

Support photoelectric layer ASON function

137. Which of the following technologies is the IEEE802.3 standard formulated for?

Ethernet

Token Bus Network

Lingpi ring network

FDDI network

138. Regarding the warning AU-AIS, which one of the following statements is correct.

AU-PTR is composed of H

H2.H3H3H3. When H1.H2 is all "1", it will report AU-AIS alarm

AU-PTR is composed of H1.H2.H3H3H3, so when all three are all "1", the AU-AIS alarm will be reported

When the AU-PTR value is 783, the AU-AIS alarm will be reported

The pointer part of the management unit of the positive structure is all "1"

139. Which of the following is not a function of RSVP-TE?

LSP path optimization

LSP deletion

LSP rerouting

Establishing Neighborhood Relationships

140. Which layer is the TCP/UDP protocol located in the TCP/IP protocol?

Application layer

Network layer

Data Link Layer

Transport layer

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141. Which of the following description about the path method to create the Client path is wrong?

Select the Activate check box. After the path is successfully created, it will be delivered to the network element layer. Otherwise, the path configuration data will only be saved on the network management side.

Use the path method to create the Client service path. After creation, the optical layer OCh path will be automatically generated to reduce the time required for path creation.

The creation or search of a new path can only be realized if the path of the upper level service layer already exists.

If the automatically calculated route is different from the planned route, you can restrict the route by setting "must pass through nodes" or "must pass through nodes".

142. Which of the following effects was used in The Raman amplifier?

Self-Phase Modulation (SPM)) b. Disperse

Raman scattering

Four Wave Mixing (FWM)

143. Which of the following difference between a wide area network and a local area network is correct?

The WAN is mainly accessed through a low-speed serial interface

Wide area network provides high-speed multiple access services

WANs typically exist within a small geographic area

WAN uses tokens to control network traffic

144. ITU-T stipulates, what is the switching gain requirement of the Raman amplifier equal to how many DB?

145. In a WDM network, if both the bidirectional OA and OSC report an optical loss alarm, which is the most likely reason?

Line fiber bidirectional interruption

Bidirectional degradation of line fiber

Unidirectional degradation of line fiber

Line fiber one-way interruption

146. Which of the following statements about the MPLS-TP OAM level is correct?

Section is the service layer of Tunnel, Tunnel is the service layer of PW, and PW is the service layer of Service

Section is the service layer of PW, PW is the service layer of Tunnel, and Tunnel is the service layer of Service

Service is the service layer of PW, PW is the service layer of Tunnel, and Tunnel is the service layer of Section

Tunnel is the service layer of PW, PW is the service layer of Service, and Service is the service layer of Section

147. Which of the following is the main function of the transport layer in the Huawei ECC protocol stack?

Establish and maintain MAC connections between adjacent network elements.

Establish and maintain the ECC routing table.

Provide end-to-end communication services to upper layers

Provide data communication services.

148. Initially determined as a single board

Which of the following order of the above four steps is correct?

1234

3124

2143

2134

149. The network element addresses used by each layer in the HWECC protocol stack are all network element IDs. The length of the network element ID is (Jbit, the highest () bit is called the subnet number (or extended ID) and the lower () bit is called the basic ID.

24, 8, 16

32, 8, 24

24, 12, 12

32, 16, 16

150. Which of the following is the correct order of clock source quality grades from high to low?

LPR->SEC->SSU-A

PRC->SEC->SSU-A

PRC->SSU-B->SEC

SEC->SSU-A->SSU-B

Page 16 of 31

151. Which of the following is a function of the TCM overhead in the ODUk signal?

Channel Monitoring Fee

Path tracing identifier overhead

Tandem Connection Monitoring Overhead

General communication channel overhead

152. Which of the following alarms will be reported by the NMS when the severely errored seconds (SES) occurs in the PM part of the ODUk layer?

ODUK_PMES GSPO

ODUk PM SES

ODUK PM SESR

ODUK PM UAS

153. Which of the following is the maximum number of OSN3500 subracks that can be installed in a 22-meter cabinet?

154. OSN 7500 supports a maximum of 2M service boards. Which of the following is correct?

155. Which of the following levels does the U2000 network management belong to?

Network-level management system

Subnet level management system

Network element level management system

Management systems at the regional level

156. After the network sends a fiber cut, which of the following alarms does not appear when 1+1 linear multiplex section protection is configured?

R_LOS

APS_INDI

MS_APS_INDI_EX

HP_LOM

157. Which of the following IP addresses is not a private network IP address?

172.128.0.1

10.255.0.1

10.0.0.1

192.168.0.1

158. Multiple types of command switching are supported in MPLS Tunnel APS protection and have different priorities. Which of the following command switching categories has the highest priority?

Locked Switching

Forced switching

Manual switching

Practice switching

159. Which of the following components of the ASON network do not include?

Intelligent network element

TE link

ASON domain

160. The segment overhead of STM-4 is () bytes/frame.

9*9*4

9*8*4

9*9*8

9*8

Page 17 of 31

161. Which of the following descriptions about the TMK1UNS5 board is wrong?

Support mixed transmission of ODUO, ODU1, ODU2, ODU2e, ODU3, ODU4, ODUflex.

This board belongs to the unified line board, and the current version supports mixed transmission of OTN service, SDH service and packet service.

It supports relay mode, which can be used in the electrical relay station in the system to realize the electrical relay function of the corresponding optical signal.

Support the transmission of OTN services whose total bandwidth does not exceed 200 Gbit/s.

162. The special fiber input power (high power) is higher than the main fiber input power. The main purpose is to improve what factor?

Dispersion

OSNR c. power

Nonlinear

163. At an OLA site, the maximum output optical power of the OAU is 20 dBm. It is used in an 80-wavelength C-band system. 10 waves are actually enabled. There is no spectrum analysis board, and the combined signal needs to be used for commissioning. How much dBm should be adjusted for the output optical power of the OUT port?

20 dBm

5 dBm

1 dBm

11 dBm

164. Which of the following maintenance signals is transmitted from the downstream site to the upstream site of the OTN?

ATS

LCK

IAE

BDI

165. Which of the following methods can be used to multiplex low-order ODUk to high-order ODUk?

Time division multiplexing

Wavelength division multiplexing

Space division multiplexing

Frequency Division Multiplexing

166. Which of the following alerts will not trigger an AU-AIS alert?

R_LOS

MS_AIS

AU_LOP

B2_EXC

167. Which of the following descriptions about the delay of store-and-forward devices is wrong?

The last bit of the data frame enters the device to start timing

The first bit of the data frame appears at the output port and ends the timing

The first bit of the data frame enters the device to start timing

Reflect the performance of network equipment, usually not compared with bit forwarding equipment

168. When using OSN8800 T32, if you need to set the ID numbers of the master and slave subracks, on which board should you set them?

EFI

EFI1

EFl2

SCC

169. Which of the following description of equipment operation is wrong?

You need to wear anti-static wrist or gloves during operation to avoid damage to the board caused by static electricity

CLASS 1M means that the light power is low and will not cause damage to eyes or skin

It is necessary to regularly clean the dust filter to facilitate heat dissipation

Equipment requires a safety ground

170. The AAC address consists of 46 bits. It is globally unique. Which of the following is the meaning of a MAC address whose eighth bit is 1?

Unicast address

Double-click the address

Multicast address

Broadcast address

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171. A 2.2m cabinet can accommodate up to which of the following OSN 2500 subracks.

172. Which of the following is the object protected by the channel protection ring?

Optical fiber

Business c. equipment

Monitoring channel

173. NSA is a 100G line service processing board. which of the following description about the NS4 single board is wrong?

The wavelength of the optical signal on the WDM side is adjustable within the range of 80 wavelengths at 50GHz intervals in the C-band.

The MS4 board does not support the ODUI service crossover between the centralized crossover bus and the ND2 board

Support 80-channel ODUO/ODUflex or A0-channel ODU1 or 10-channel ODU2/ODU2e or 2-channel ODU3 or 1-channel ODU4 signal and cross-connect board to realize cross-scheduling of services.

It can be used in electrical relay stations to realize the electrical relay function of corresponding optical signals.

174. Which of the following data does not belong to the network layer data on the network management side?

Uploaded configuration data

Securing Subnet Information

Fiber and cable connection information between network elements

Path information

175. The common methods for fault location of MSTP equipment can be simply summarized as which of the following?

One is to change the board, the other is to loop back, and the third is to analyze.

First analysis, second loopback, third board replacement.

―Analysis, two board changes and three loops.

First loop back, second board replacement, third analysis.

176. Which of the following is a functional unit that provides a high-speed signal interface and processes the corresponding signal?

Cross-connect unit

Auxiliary units

Tributary units

Line units

177. Which type of veneer does TQM belong to?

Tributary board

Circuit board

Branch line combined - board

Light enlarged version

178. Which of the following statements about the safe use of optical fiber is wrong?

When the received optical power is too high, an optical attenuator is required

The light emitted by the laser is infrared light and is not strong, so you can point the connector at the human eye to observe whether there is light or not.

To clean the optical fiber connector and the optical interface of the laser, special cleaning tools and materials must be used

The optical subtractor can only be added to the "IN" port, not to the "OUT" port

179. Which of the following hash algorithm used for load sharing does not include?

Assignment based on MAC address

Allocation based on business type

Based on MPLS labels

Assignment based on IP address

180. In the Windows operating system, the log files of the U2000 program are stored in the () directory of the U2000 installation disk.

U2000/server

u2000/client/log

U2000/server/log

U2000/Customer

Page 19 of 31

181. It is necessary to perform the () operation before querying the error code and optical power on the network management system, otherwise the corresponding teaching data cannot be queried.

Create a Logical Fiber

Configuration data

Synchronize network element data

Enable network element performance monitoring time

182. Which of the following belongs to the client-side logical port of the single board in standard mode?

n(Nn/OUTn)-OCH:1-ODUk:m-ODUp:a

ClientLP-n

RX/TX-n

ODUkLP-n

183. Which of the following reasons will not cause abnormal optical power?

Enable FEC function

Pigtail connection error

The device temperature is too high

Pigtail attenuation is too large

184. If a bit error is detected in the B1 byte, which of the following alarms will be reported by the peer end?

MS-AIS

RS-BBE

RS-FEBBE

Not reporting

185. The receiving end performs BIP-8 check on the received STM-16 frame before descrambling. The result obtained is different from the B1 byte of the next STM-16 frame received or the result is 10001100, then this means This STM-16 frame has several error blocks. Which of the following options is correct?

186. About the comparison between Raman amplifier and EDFA. Which of the following statements is wrong?

Raman amplifiers can amplify signals of different bands by selecting different pump sources, so Raman amplifiers have no gain bandwidth limit in theory, while EDFA has a range of gain bandwidth.

The gain calculation/test method of Raman amplifier and EDFA is consistent with "gain = output power - input power"

The gain medium of Raman amplifier is transmission fiber; while the gain medium of EDFA is EDF (doped fiber)

The equivalent noise figure of the Raman amplifier is smaller than that of the EDFA

187. Which of the following items cannot be monitored by the SOM system?

Main optical path performance

Types of originating FEC

Optical Performance Flatness

Receiver OTU input optical power

188. Which of the following functions does EX40 increase compared to X40?

The number of multiplexing and demultiplexing waves is more

Support optical layer crossover

Occupies fewer slots

Support single-channel optical power monitoring

189. The dispersion coefficient is the time delay difference caused by the optical wavelength signal passing through the unit length of optical fiber in the unit wavelength interval, so which of the following is the unit of the dispersion coefficient?

ps/nm

ps/km

ps/nm.km

ps/km.nm

190. Which of the following is not an advantage of using QinQ technology?

Solve the increasingly scarce public network VLAN ID resource problem

Provide a relatively simple Layer 2 VPN solution

Different services can be distinguished according to different levels of VLANID:

Solve the problem of packet transmission delay

Page 20 of 31

191. Which of the following is wrong about LCAS?

When some members fail, other members still transmit data normally; when the failed members are repaired, the bandwidth of the virtual concatenation group can be automatically restored

If the number of VCTrunk members is not suitable, you need to increase or decrease the number of users, and adjust the number of members through LCAS, you only need to increase or decrease the number of VCTrunk members to achieve a smooth upgrade without interrupting the business

TR_TIMR is the waiting recovery time, which refers to the waiting time to join the LCAS virtual concatenation group after the time slot shielded by LCAS changes from bad to good

Use SDH overhead bytes (K4 for high-order virtual concatenation, H4 for low-order virtual concatenation) to carry control information, and perform handshake operations between the source and the sink

192. Which of the following is wrong for the OTUk frame format description?

The OTUk format is a matrix of x4080 byte columns

The 1 to 16 byte column in the OTUk cis format is the overhead byte

The 17 to 3825 byte column of the OTUt frame format is the payload data

The 3825 to 4080 byte column of the OTUk frame format is the number of FEC codes

193. Which of the following are not 400G transmission modulation technologies?

Advanced oDSP algorithm

Multicarrier Generation and Multiplexing

Higher order modulation (xQAM)

FDDM/Nyquist Spectrum Compression Technology

194. Which of the following are not the precautions after board replacement?

Check the flickering status of the indicators on the board to confirm that the board is working normally

Record the settings of jumpers and DIP switches on the board

For functional units with backup, check whether the switching is normal

Confirm that there are no abnormal alarms

195. Which of the following description of Tunnel APS protectionis wrong?

Tunnel APS is a tunnel protection function implemented based on the APS protocol.

The Tunnel APS 1+1 switching type only supports double-ended switching.

Tunnel APS is tunnel-level end-to-end protection.

Because the link layer detection method of Tunnel APS is performed through MPLS-TPOAM, before creating APS protection, you need to enable Turmel's NPLS-TPOA

196. Which of the following bytes can be used for wired telephony between two REG devices?

E1 and E2

None of the above

197. In Ethernet, the frame length has a lower limit, which is mainly due to which of the following considerations?

Carrier sense

Multi-point access

Conflict detection

Improve network bandwidth utilization

198. The following description of the electrical layer multiplexing phase mapping steps of ODUO. Which description is wrong?

After mapping and multiplexing, the 2-way DDUO signal can be multiplexed into 1-way OTU1[V] signal

After mapping and multiplexing, 8 channels of ODUO signals can be multiplexed into 1 channel of 0TU2[VVI] signals

After mapping and multiplexing, 34 channels of 0DUO signals can be multiplexed into 1 channel of OTU3[VM] signals

80 channels of ODUO signals are mapped and multiplexed, and finally can be multiplexed into 1 channel of OTU4[] signals

199. MPLS technology can be nested in multiple layers. There is no limit. It is only limited by (). It has good scalability.

Which of the following is correct?

VLANs

Ethernet packet length

The processing power of the equipment

Latency issues

200. The network must have protection capabilities. Which one is the first condition that needs to be met?

Line rate

Interface type

Alternate channel

Topological results

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201. Which of the following descriptions about the performance parameters of line optical fiber quality monitoring is wrong?

Increasing the pulse width will increase the duration of laser emission, that is, increasing the injected energy can obtain a larger dynamic range, but increasing the pulse width will lead to a larger dead zone.

The total fiber loss will affect the actual detection distance. The dynamic range of the same detection mode is fixed. The greater the total fiber loss, the smaller the detection distance.

The width of the light pulses emitted by the detection in different modes. Different pulse widths affect the distance accuracy and monitoring distance. The larger the pulse width, the larger the dynamic range, the longer the test distance, and the higher the distance measurement accuracy.

The line optical fiber quality monitoring function adds the results of multiple measurements and takes the average value to improve the monitoring accuracy. The actual time required from the start of detection to the return of the detection results by the software will be longer than the set "detection time".

202. Which of the following descriptions about 64K service configuration and SDH cross-connect configuration is wrong?

SDH services support one-way and two-way services

The VC12 time slot range of the PCM board starts from 65

64K services support one-way and two-way services

PCM single board supports VC3 level service crossover

203. Establish an Ethernet private line service between H (HQ) and H2 (branch) of the enterprise and bind 5 VC-12s in the corresponding VCTRUNK. When a C-12 fails, the Ethernet between H and H2, the leased line will not be interrupted so which of the following statements is true?

Enable the LCAS function on the port used by the Ethernet leased line service between H1 and H2

Enable the LCAS function on the VCTRUNK port used by the Ethernet leased line service between H and H2.

Enable the OinQ function on the port used by the Ethernet leased line service between H1 and H2

Enable the QinQ function on the /CTRUNK side used by the Ethernet leased line service between H1 and H2

204. The rate of STM-1 is () bit/s.

9*270*1*8000*8

9*270*1*8000

9*270*1*8000*16

9*2708000

205. Which of the following time periods is the information of the 2M signal loaded into the multiframe?

500us

125us

500ms

125ms

206. In the fault handling scenario, the loopback method is one of the commonly used fault location methods. Which of the following descriptions about the loopback method is wrong?

Suitable for troubleshooting board faults and line faults

Scope for Known Failures

Including software loopback and hardware loopback

Need to analyze a large number of alarms and performance data in depth in advance

207. In the characteristic test of the splitter (multiplexer), what standard should the isolation test meet?

<20dB

<25dB

>20dB

>25dB

208. Which of the following description about using the synchronous method to create fibers is wrong?

There is no need to create an optical fiber that exists on both the NMS side and the NE side, and whose information is completely consistent.

If there are fibers that have not been created on the U2000 or NEs, they need to be synchronized or created.

The existence of conflicting fibers does not affect the configuration of the path, so it can be ignored

Conflicting fiber refers to the fiber configured on the network element side and the configured fiber on the network management side.

209. Which of the following description about single-station commissioning is wrong?

If the input voltage of the equipment is not within the required range, suggestions for rectification should be put forward, and it is strictly forbidden to power on

It is strictly forbidden to plug and unplug the power plug and PIU board with power on

In the case of power failure, you don’t need to wear anti-static wrist or anti-static gloves to touch the single board

After the single station hardware inspection is completed, make sure that all power switches are in the OFF position

210. In the Colored&Directioned scenario of 4-dimensional ROADM, how many sets of M4OV+D40 are needed to realize local business scheduling to four directions?

Page 22 of 31

211. For a 10G OTU board, the optical module at the receiving end uses a PIN module, so which of the following receiving powers is within the normal receiving range of the board?

-9dBm

-19dBm

9dBm

19dBm

212. Which of the following options does not belong to the PW APS switching conditions?

Board software failure

MPLS_PW_SF

Single board hard reset

Board soft reset

213. Which of the following description about ODUk ring network protection is wrong?

Enhanced ODUk ring network protection does not need to set up a management node. If setting the management node has no effect on protection

The protection configuration of each site on the ring network must be completed before starting the protocol

ODUk ring network protection is mainly applied to the ring network configuration of distributed services, and realizes the protection of multiple distributed services between all sites by occupying two different ODUk channels

Ordinary ODUk ring network protection does not need to set up a management node.

214. Which of the following is the meaning of "L" in the optical module parameter "L-642"?

Transmission distance

Dispersion coefficient

Emission wavelength

Receiving wavelength

215. Which of the following logical function blocks is used to generate an R-LOS alarm?

RST

MST

MSA

SPI

216. Which of the following is the class B address 154.19.2.3 network address?

154

154.19

154.19.2

154.19.2.3

217. When a signal with a standard Ethernet frame length of 64Bytes is connected to the Ethernet board, if the QinQ function is enabled, what is the actual frame length of the signal inside the board () Bytes?

218. Which of the following description about Flexible ROADM is wrong?

Improve spectrum utilization to meet flexible scheduling requirements in the future super 100Gbit/= rate era.

DFlexible ROADM is compatible with the existing network

WSMD2 single board supports F1exible ROADM configuration

Flexible grid technology can flexibly set bandwidth and support flexible allocation and scheduling of bandwidth.

219. Which of the following description about SW SNCP protection is wrong?

When configuring SW SNCP, you need to set the SNCP type

The trigger conditions are that the board is not in place, SF, SD

SW SNCP protects the OCh channel by using the dual transmission and selective reception function of electrical layer crossover

The crossover granularity is GE or Any signal

220. The TOA board is an 8-way arbitrary rate service tributary processing board. Which of the following description about the TOA (STND) board is wrong?

The maximum crossover capacity of a TOA board is 20 Gbit/s

When the service on the client side is GE, the working mode of the port is ODU0 non-aggregation mode, and the intra-board crossover needs to be configured.

When the client-side service is STM-16, the port working mode is ODU1 non-aggregation mode, and there is no need to configure intra-board crossover

When the service on the client side is FE, the working mode of the port is ODU1 aggregation mode, and the intra-board crossover needs to be configured.

Page 23 of 31

221. The number of bit error blocks on each VC4 channel is detected by B3 at the receiving end. At the same time, the information which is sent back to the sending end through Q HP-REI and HP-FEBBE report at the sending end?

K3 (b1-b4)

G1 (b5-b8)

G (61-64)

J (b1-64)

222. Which of the following is the monitoring overhead for monitoring and reporting OTUk_DEG and OTUk_EXC alarms?

TCMi

223. Which of the following reasons will not cause the network management to report the MUT_LOS alarm?

The OTU board is faulty

The out port of the DMUX board is faulty

The pigtail connecting the out port of the DMUX board and the in port of the OA board is faulty

The in port of the OA board is faulty

224. PWE3 is a Layer 2 service bearer technology that can imitate the basic behavior and characteristics of which of the following services as realistically as possible in the packet switching network PSN?

ATMs

Ethernet

TDM

All of the above

225. Which of the following is correct in describing the order in which the signal flow between the SDH interface and the crossover unit flows through the module unit?

SPIRSTMSPMSPSAHPT

SPIRSTMSAMSPMSTHPT

SPIMSTRSTMSAMSPHPT

SPTMSTMSARSTMSPHPT

226. After successfully deploying the PWE3 service, the "deployment status" of the PWE3 service is displayed?

Deployment b. is activated

Deployed

to activate

227. Which of the following ITLI-T recommendations define the OTN frame structure?

AG694

BG652

CG975

DG709

228. Which of the following alarms did the peer report when a bit error was detected in the B2 byte?

MS-AIS

RS-BBE

MS-FEBBE

MS-BBE

229. Which of the following subracks does not support the configuration of grouping boards?

OSN 1800II

OSN 9800 P18

OSN 8800 T16

OSN 1800V

230. The "2" in the optical module parameter "L-64.2" indicates which of the following working windows?

880nm

1310nm

1550nm

1510nm

Page 24 of 31

231. Which of the following protocols does not belong to the MPLS signaling protocol?

RSVP

LDP

LMP

MP-BGP

232. During the maintenance of OSN equipment, it is often seen that the fan is running at full speed and the equipment reports a TEMP_OVER alarm. The common reasons and solutions are?

The dust filter is seriously accumulated, which affects the ventilation. It is necessary to remove the dust filter for cleaning

There is a lot of dust inside the fan, which affects the speed. It is necessary to remove the fan to clean it.

The power module of the single board is seriously dusty, affecting heat dissipation, and needs to be removed to remove the board

The cooling function of the optical module is abnormal, and the optical module needs to be replaced

233. Which of the following description of the contents of the calculation formula of the maximum line rate frame rate (N=Ratc/((L+7+1+M)x8)) is wrong?

L is the standard Ethernet frame length, the minimum value is 64Bytes

M is the frame gap, the minimum IFG (minimum frame gap) is 8Bytes

Rate indicates the line rate of the physical layer, if the device port is FE, then Rate=100Mbit/s

The "8" outside the brackets means that 1 Byte contains 8 Bits

234. The technology of recovering amplitude, phase and polarization state information from the received signal by using which of the following characteristics of the laser to coherent with the received optical signal is called coherent receiving technology?

Vibration in the same direction

Same amplitude

The direction of vibration is opposite

same frequency

235. The optical fiber quality detection light of the TNF1AST4 board shares the light source with the OSC channel. Use the TNF1AST4 single board in the which type model (when performing detection, the OSC communication will be interrupted, at this time only the optical fiber quality detection signal is sent, and the detection dynamic range is large)?

Online mode

Typical model

Normal mode

Offline mode

236. Which of the following network element users belong to the debug level?

1ct

root

szhw

LCD

237. Which of the following optical fibers has dispersion characteristics that meet the following description: the dispersion is 0 at 1310nm, and the typical value of the dispersion coefficient is 17ps/nm.km near 1550nm?

238. Which of the following is the frame structure of STM-16?

9*270*1

9*270*4

9*270*16

9*270*64

239. Which of the following statements about clock sources is wrong?

The internal clock source has the lowest priority due to low precision

Usually the tributary clock is not used as the clock source of the device

Select the same SSM protocol for all NEs in the clock protection subnet

If the standard SSM protocol is enabled, you need to set the clock source ID

240. The user-oriented interface and transmission network-oriented interface of the E-Line service are?

UNI, UNI

UNI, NNI

NNI, UNI

NNI, NNI

Page 25 of 31

241. Which of the following descriptions about the composition of the SOM system is wrong?

The intelligent management software SOM is integrated on the U2000.

The SOM system is composed of hardware and software.

Spectrum analysis boards and optical amplification boards are used to obtain optical performance data and monitor optical signals without interrupting services.

The software part completes the real-time monitoring and reporting of the optical performance of the network, and performs related adjustment operations.

242. For OSN3500. Which of the following boards provides a centralized backup function for the +33V power supply of each board in the subrack?

PIU

AUX

COA

SCC

243. Which of the following is a functional unit. It provides the interface related to the orderwire telephone and the serial data of the system?

Cross-connect unit

Auxiliary units

Branch unit

Line unit

244. Which of the following descriptions about multiplexing is correct? In the process of byte interleaved multiplexing, the information payload and pointer bytes of each frame are interleaved and multiplexed according to the original value. The segment overhead will also be correspondingly of multiplexing?

There will be 4 times the overhead in STM-1 in STM-4

The overhead in STM4 is newly integrated and has only one set of overhead

The overhead number in STM-4 is the same as in STM-1

Overhead random generation in STM-4

245. E&M signals define a connection type between a relay device and a signaling unit. Which of the following are relay devices?

Telecom exchange

PBX

E&M Voice Exchange

Softswitch platform

246. The ODUK serial connection monitoring overhead (TCM) of OTN supports multiple monitoring modes. Which one of the following options is wrong?

Nesting

Cascading c. to overlap

Multiplexing

247. Which of the following descriptions about OTU4 frame rate calculation is correct?

255/238 × 2488320 kbit/s

255/237 × 9953280 kbit/s

255/236 × 39813120 kbit/s

255/227 × 99532800 kbit/s

248. Which of the following light sources has the best dispersion tolerance and stability?

Directly modulated light source

EA modulated light source

Mach-Zehnder modulated light source

None of the above

249. Which of the following are the main reasons why OSC monitoring signals are not amplified by EDFA along with business signals?

Even when the OA fails, the OSC monitoring channel is still valid.

The power of OSC is too low, lower than the amplification sensitivity of O

The rate of OSC is too low, and if it is enlarged, the energy efficiency is too low.

Prevent monitoring signals from interfering with business signals.

250. Which of the following descriptions about the business package method is wrong?

At present, the boards that support service package configuration include TOA, TOX, TISC and other tributary boards.

The business package implements one-click distribution of typical business configurations. In fact, a series of configuration commands are issued for batch configuration, which reduces the difficulty of product deployment and maintenance costs.

The service package method can configure the working mode, service type, cross-connect and port type in batches

There are two different ways to configure business packages, one is through batch board configuration, and the other is to configure each board separately

Page 26 of 31

251. Regarding the slot setting of the OSN 6800 subrack, which of the following descriptions is wrong?

IU19 and IU20 are fixed at the base for plugging and placing the power access board PI

Each PIU can independently support subrack power supply

U9 and IU10 slots can be used for cross-connect board XC

Each XCS can independently support service crossing between all slots

If the IU17 slot is not configured with SCC, the OTU single board can be inserted to provide the service cross function

IU17 and IU18 slots can be used for the main control board SC

Each SCC can independently support subrack management

252. When setting the monitoring time of network element performance events, which of the following should be set as the time?

slightly later than the current time

Consistent with the current and current time of the network element

Earlier than the current time

Arbitrary settings

253. Which of the following IP addresses is a Class C IP address?

C2.A8.D2.e1

10.110.192.111

10011010.01101110.10000000.01101111

127.0.0.1

254. What are the PWRA, PWRB, and PWRC on the SSN1GSCC board corresponding to the alarm objects? Which of the following options is correct?

Road A-48V power indicator light B-way-48V power indicator system+3.3V backup power indicator

Road A-48V power indicator light B-way-48V power indicator system+5.0V backup power indicator

-48V power indicator system+5.0V backup power indicator system+3.3V backup power indicator

-48V power indicator system+3.3V backup power indicator system+5.0V backup power indicator

255. When performing fiber synchronization, the network element does not create a fiber representation?

Fiber connections that exist only on the network element side

Fiber connections that do not exist on the network management side and the network element side

Fiber connections exist on both the network management side and the network element side

Optical fiber connection only exists on the local network management side

256. Among the working modes provided by the line fiber quality monitoring function, which one is not included?

Intra-office mode

Near-end mode

Automatic mode

Manual mode

257. Which of the following statements about the alarm reversal function is wrong?

For ports that have not opened services, alarm reversal is used to avoid related alarms

By default, it is the non-reversal mode. In this mode, the alarm of the device port cannot be reversed.

In the automatic recovery mode, regardless of whether there is an alarm on the port, the alarm of the port device can be reversed

After the alarm of the port device is reversed, no alarm will be reported when there is an actual alarm, and an alarm will be reported when there is no actual alarm.

258. The parameter C of G652 DCM-C indicates how much KM G.652 can compensate for the dispersion?

Can compensate 60KM

Can compensate 40KM

Can compensate 80KM

Can compensate 20KM

259. The maximum output optical power of an OBU of an optical amplifier is 20dBm, how many dBm should the standard output optical power of the single-wavelength system be used in the C-band 80 be?

+4dBm

+7dBm

-2dBm

+1dBm

260. When the input optical power of the amplifier of the OAU at the receiving end is lower than the nominal optical power, which of the following operations are wrong?

Adjust the adjustable optical attenuation before the receiver amplifier to increase the input optical power of the amplifier

Set the OAU gain to make its output reach the nominal value

Increase the sending optical power of the sending end

When the input optical power cannot be increased by adjusting the adjustable attenuator, the adjustable attenuation at the input end of the amplifier should be suppressed

Page 27 of 31

261. Which of the following descriptions about PM_BIP8-related alarms is correct?

The PM_BIlP8_DEG alarm indicates the signal degradation alarm of the PM section at the ODU layer.

The PM_BIP8_SD alarm indicates the signal degradation alarm of the PM segment at the OTU layer.

The PM_BIP8_OVER alarm indicates that the ODU layer PM bit error amount exceeds the limit alarm.

262. Which of the following devices does not support PCM features?

OSN 2500

OSN 7500

OSN 550

OSN 3500

263. In the ITU-TG692 recommendation, the allowed signal frequency is based on the reference frequency () The channel spacing can be 100GHz.50GHz or 25GHz.

192.1 terahertz

1931 Terahertz

194.1 terahertz

196.1 terahertz

264. MPLS is a label forwarding technology. Which of the following is the original design purpose?

Improve the utilization rate of Р address

Increase the forwarding speed of the router

Reduce network latency

Avoid broadcast storms

265. Which of the following boards supports the QinQ function?

EFT8

EGT2

EMS4

EMR2

266. Which of the descriptions about the FIU board is correct?

The FIU board processes monitoring information.

FIU can complete the access and solution of OSC channel.

When there is no signal input in the OptiX OSN8800 device, the FIU board will report an alarm.

Whether it is an OLA station or an OADM station―one station only needs one FI

267. Which of the following descriptions about the signal flow at the OTM site (OSN 8800 equipment) is wrong?

Service sending direction: SDH signals -> LSX -> M40V -> OBU1 -> Line

OSC receiving direction: Line -> FIU -> Sc2

Service receiving direction: Line -> FIU -> OAU -> M40V -> LSX -> SDH signals

Service sending direction: SDH signals -> LSX -> M40V -> OBU1 -> FIU -> Line

268. There are many factors affecting the transmission distance in NG WDM system, which of the following will not affect the transmission distance?

Optical line dispersion

OSC independent monitoring channel

Optical line loss

Fiber nonlinear effect

269. When the line board scheduling granularity is ODUflex, which of the following protections can be supported?

Tributary SNCP protection

SW SNCP protection

ODUK ring network protection

ODUk SNCP protection

270. Which of the following overheads is not ODUk overhead?

NJO

APS/PCC

Page 28 of 31

271. When the sender detects that the b6-b8 of the K2 byte is 110, it means that the sender has reported () an alarm.

MS-AIS

R-LOS

R-LOF

MS-RDI

272. Which of the following alarms will not be generated for the alarm?

R-LOS

MS-AIS

TU-AIS

HP-TIM

273. which of the following descriptions about optical power commissioning is wrong?

During the commissioning process, it is necessary to pay attention to the range of the spectrum analyzer and the OTU board to avoid damage to the board and the spectrum analyzer due to excessive input optical power.

The single-wave optical power at the receiving end can be calculated according to the total power to obtain an accurate value

Too high optical power will cause nonlinear effects, the lower the optical power entering the fiber, the smaller the nonlinear effects

In the case of ensuring that the optical power flatness meets the index requirements, the optical power flatness can be sacrificed to ensure the signal-to-noise ratio flatness

274. Which of the following adjustments carries the most information payload in the information payload area?

Positive adjustment

Negative adjustment c. to adjust

NDF inversion

275. When the main control board is single-configured, which step is required to replace the single board compared to when the main control board is dual-configured?

Download the original configuration data

Make sure that the host software version is consistent before and after the replacement, if not, please upgrade and replace the single board software first.

Consistency check of network management and network element data.

Query the alarms of the board and confirm that the original alarms have been cleared.

276. The service signals that cannot be transmitted by the HUNQ2 board are?

STM-16

ODU3

ODUflex

277. 100mw is approximately equal to how many dBm?

10dBm

15dBm

20dBm

13dBm

278. which of the following description about LAG (Link Aggregation Group) is wrong?

Static aggregation does not require LACP to run.

In Ethernet, links correspond to ports, so link aggregation is also called port aggregation

A logical link formed by bundling multiple physical links is called a link aggregation group.

Non-load sharing mode can improve link availability.

279. When configuring the basic properties of the Ethernet interface of the EM20 single board, the default value adopted for the "maximum frame length" is?

1522

1491 c.1490

9600

280. Regarding the operation of deleting paths from the network management system, which of the following statements is wrong?

Deleting trails from the network layer only deletes WDM trails at the network layer on the NMS side

There is no interruption of business after the path is removed from the network layer

Deleting a trail from the network element layer will delete the trails on the network element side and the network layer together

After the path is deleted from the network layer and the network element layer, the service will be interrupted

Page 29 of 31

281. Which of the following is the database used by U2000 on PC/WIN2003?

Sybase

Microsoft SQL Server 2000

FoxPro

DB2

282. For nonlinear effect FWM, which of the following processing methods is correct?

Control the input optical power

Controlling Optical Power at Individual Wavelengths

Do not use G, 653 fiber in DWDM system

Using a fiber with a large effective area

283. The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame. And includes the most () base frames

128

256

512

284. In the SDH optical synchronous transmission system. Which of the following bytes is used to transmit the quality and usage information of the clock source?

285. When configuring VLAN-based service types, which of the following functions must be enabled on the port?

Flow control

Entry Detection

Auto-negotiation mode

Broadcast hold suppression

286. For OSN6800 equipment, which of the following slots does not have an electrical layer crossover backplane bus?

Slot1

Slot9

Slot10

Slot17

287. When inserting LCK to the ODUk signal at the local end, which processing will the downstream station system not perform?

Report ODUk_PM_LCK alarm

Insert DDUK_AIS information

Return DDUk_PM_BDI

Down plug DDUk_PM_LCK alarm

288. Pointer adjustment is related to which of the following?

The clock

Speed

Expenses

Scrambling

289. The value range of AU-PTR is 0~782. Which of the following alarms will be generated when the receiving end receives invalid pointer value for 8 consecutive frames?

AU-AIS

AU-LOP

MS-AIS

MS-RDI

290. The SDH frame structure is a rectangular block frame with which of the following options as the unit.

bytes

bit

block

frame

Page 30 of 31

291. When which of the following situations occurs, the ODUk_PM_DEG alarm will be reported on the network management?

The ODU layer, that is, M, sets the bit error limit when the number of bit errors exceeds the specified bit error excess threshold

When the number of bit error degradation in the ODU layer PM segment exceeds the specified error degradation threshold

When the number of bit errors due to signal degradation at the ODUk TCM layer exceeds the specified excess bit error threshold

ODUk TCM layer error code exceeds the threshold when the number of error codes exceeds the specified error degradation threshold

292. Which of the following network element forms completes the cross-multiplexing between branches and lines, lines and lines, and service up and down?

ADM

REG

DXC

293. Which of the following statements is wrong?

In the connection model of MPLS VPNE, the network is composed of the backbone network of the operator and each site of the user. The so-called VPN is the division of the site collection. A VPN corresponds to a collection composed of several sites.

The network construction of MPLS VPN is completed by the service provider. In this kind of network structure, VPN service is provided to users by service providers, and users don't feel the existence of public network as if they have independent network resources.

For the backbone routers in the backbone network of the service provider, that is, the routers that are not directly connected to the edge routers, they do not know the existence of the VPN and are only responsible for data transmission within the backbone network.

All VPN construction, connection and management work is carried out on the backbone router.

294. Which of the following descriptions about OptiXtrans E6600/OptiX OSN 1800 is correct?

The OptiXtrans E6608/OptiX OSN 1800II Pro DC chassis can accommodate up to 7 service boards.

The OptiXtrans E6608/OptiX OSN 1800II Pro fan box adopts a right-in and left-out exhaust cooling method.

OptiXtrans E6616/OptiX OSN 1800 V Pro adopts MS-OTN unified switching, has a large service access capacity, can realize the scheduling of electrical layer signal service convergence nodes, and enhance network flexibility.

When the OptiXtrans E6616/OptiX OSN 1800 V Pro uses the TMK5SXCH cross-connect board, the current maximum capacity of the single-slot ODUk is 400 Gbit/s.

295. Which of the following descriptions about the EX40 board is wrong?

The board supports online optical power monitoring

Single board supports application in dual-fiber bidirectional system

Enhanced 40-wave multiplexer/demultiplexer board

The maximum difference in insertion loss of each channel is not more than 5dB

296. Which of the following descriptions about the system architecture of 0ptiXtrans E6600/OptiX OSN 1800 is correct?

Both E6616 and 1800 V Pro adopt L0+L1+L2 three-layer architecture.

E6608T/E6608/E6616 or 1800 II TP/1800 II Pro/1800 V Pro adopt L0+L1+L2 three-layer structure.

E6608T/E6616 or 1800 II TP/1800v Pro adopt L0+L1+L2 three-layer structure.

E6608T/E6608 or 1800 II TP/1800 II Pro adopt L0+L1+L2 three-layer structure.

297. Which of the following combinations cannot achieve dynamic wavelength scheduling?

WSMD4

DWSS20

WSD9+WSM9

RDU9+RMU9

298. The special fiber input power (low power) is the fiber input power lower than the main fiber input power. The main purpose is to reduce what factor?

Nonlinear

Power

Dispersion

OSNR

299. In a packet-switching network running MPLS-TP OAM detection technology, when CC is used to detect connectivity, if the sink MEP does not receive a CCM message within how many numbers of messages sending cycles, it is considered that the connectivity is at the same question?

3.5

300. By summarizing the OTU1/2/3 frame rate, the calculation formula of the OTUk frame rate can be obtained. Which of the following is correct?

OTU rate=255/(235-k) X STM-N frame rate

OTU rate=255/(237-k) X STM-N frame rate

OTU rate=255/(239-k) X STM-N frame rate

OTU rate=255/(236-k) X STM-N frame rate

Page 31 of 31

301. In the OTN electrical layer structure, which one is correct about the description of the hierarchical order of the signal input from the WDM side to the output path of the client side?

OTUk―>OPUk―>ODUk―>Client-

Client->ODUk->OPUk->OTUk

OTUk->ODUk->OPUk―>Client

CClient->OPUk->ODUk―>OTUk

302. Which of the following boards does not provide online detection of optical signals at the MON port?

OAUI

WSMD4

TTA

FIU

303. OOS overhead is non-associated overhead. Which of the following descriptions about OOS overhead is wrong?

Use the 21st-23rd time slot in the optical supervisory channel (OSC) signal frame structure to transfer overhead

OOS overhead occupies 2Mbit/s bandwidth

OOS overhead is not enabled by default

OOS overhead includes OTS, OMS/OCh overhead

304. Which of the following is the overhead for bit error detection in the OTN frame structure?

GCCO

TTI

BIP-8

305. Which of the following descriptions about the advantages of WDM is wrong?

Networking flexibility, economy and reliability

Abundant expenses

Ultra-large capacity, ultra-long-distance transmission

"Transparent" transmission of data

306. Which of the following descriptions about colorless networking is wrong?

The line single-board optical module can use a tunable wavelength optical module.

Use the ROADM single board to realize the function of adding and dropping any wavelength from any port

Fixed-wavelength optical modules cannot be used for line single-board optical modules.

You can use TM20/TD20 to realize the access of coherent signals, and use WSM9/WSD9 to realize the access of non-coherent signals.

307. According to the OTU board naming rules, which of the following descriptions about the meaning of each letter in the MD02A board is wrong?

D: Indicates that the board has 2 WDM side ports

A: means that the client side can access the Any service

02: Indicates that the board has 2 client-side interfaces

M, stands for optical wavelength conversion board

308. Which of the following descriptions about ring networking is wrong?

Most of the sites in the ring network are OADM sites, but there can also be OLA sites.

The ring network has protection functions in both east and west directions, and is a common networking method.

FOADM and ROADM cannot coexist in the same ring network.

On the basis of ring networking, complex networking topologies such as tangent rings, intersecting rings, and rings with chains can be derived.

309. For coherent system commissioning, according to the optical power of each wavelength monitored by the OPM8 single board or the spectrum analyzer, to what range should the optical power difference of each wavelength be adjusted at the equalization station?

Soil 2dB

soil 1dB

Soil 3dB

±4 dB

310. Which of the following descriptions about commissioning of super-100G and 100G hybrid transmission systems is wrong?

The super 100G channels with different modulation modes have different main input fiber optic power indicators.

To expand the capacity of the 100G system beyond 100G channels, it is necessary to use the indicators used in the initial commissioning of the network for commissioning to ensure that the combined optical power remains unchanged.

For super 100G and 100G mixed transmission systems, the requirements for the input optical power indicators of different fiber types are the same.

For super 100G channels with different channel intervals, the main input fiber optic power index is different.

HCIP-Transmission V2.5 H31-341_V2.5 Exam Dumps

HCIP-Transmission V2.5 H31-341_V2.5 Exam Dumps

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