HCIA-Datacom H12-811_V1.0 Exam Free Dumps

dumps2023-08-19T10:22:54+08:00

Passing H12-811_V1.0 exam is a required step for you to earn Huawei HCIA-Datacom V1.0 certification. Many Huawei candidates search the best way online to prepare for H12-811_V1.0 exam. Here, we provide the latest Huawei HCIA-Datacom V1.0 H12-811_V1.0 exam dumps, which can help you test all the related outline. Free Huawei HCIA-Datacom V1.0 H12-811_V1.0 exam dumps are available below.

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1. When the host accesses the web server of the server, the value of the network layer protocol field is 6.

True

False

2. A network engineer prompts the following information when entering the command line:

Error: Unrecognized command found at '^' position. Which statement is correct about this prompt message?

The input command is incomplete

The parameter type is wrong

The input command is ambiguous

Keyword not found

3. As shown in the figure, there are three data packets captured by the administrator in the network. Which of the following statements is wrong?

None of the three packets contain application layer data

These three data packets represent the three-way handshake process of TCP

The telnet client uses port 50190 to establish a connection with the server

The IP address of the telnet server is 10.0.12.1, and the IP address of the telnet client is 10.0.12.2

4. On the command line interface of the Huawei AR router, the save command is used to save the current system time.

True

False

5. Which statement about the transport layer protocol is correct? (Multiple choice)

The establishment of a TCP connection is a three-way handshake process, while the termination of a TCP connection requires a four-way handshake

UDP uses the SYN and ACK flags to request and confirm connection establishment

Well-known port numbers range from 1-1023

UDP is suitable for transmitting delay-sensitive traffic and can be reassembled according to the sequence number field in the packet header

6. The tracert diagnostic tool in Huawei routers is used to trace the forwarding path of data.

True

False

7. In which of the following network types does OSPF need to elect DR and BDR? (Multiple choice)

Broadcast type

Point-to-point type

Point-to-multipoint

NBMA

8. Which of the following statements about static routing is wrong?

Manual configuration by network administrator

Routing information needs to be exchanged between routers

Cannot automatically adapt to changes in network topology

Low requirements on system performance

9. Which frequencies does the IEEE 802.11n standard support? (Multiple choice)

6GHz

2.5GHz

2.4GHz

5GHz

10. In the network shown in the figure below, what commands can be entered on the router to enable host A to ping host B? (Multiple choice)

RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.2 RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.1

RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.2 RTB: route-static 10.0.12.1 255.255.255.252 11.0.12.1

RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.1 RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.2

RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.1 RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.2

Page 2 of 27

11. On the VRP operating platform, which of the following commands can only view static routes?

display IP routing-table

display IP routing-table statistics

display IP routing-table verbose

display IP routing-table protocol static

12. A router running the OSPF protocol can only reach the FULL state after completing LSDB synchronization.

True

False

13. All router interfaces belong to the same broadcast domain.

True

False

14. Which of the following protocol types does the OSPF protocol support? (Multiple choice)

Point-to-multipoint

Point-to-point type

Broadcast type

NBMA

15. When using the ping command on the VRP platform, if it is necessary to specify an IP address as the source address of the echo request message, which of the following parameters should be used?

-d

-a

-s

-n

16. Which of the following OSPF protocol packets can ensure the reliability of LSA update?

LSR

LSU

LSACK

17. What are the stable states of the OSPF protocol neighbor relationship? (Multiple choice)

2-way

Full

Down

attempt

18. Must all interfaces of routers running OSPF belong to the same area.

True

False

19. Can dynamic routing protocols automatically adapt to changes in network topology.

True

False

20. As shown in the figure below, host A and host B cannot communicate.

True

False

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21. As shown in the figure, when the switch needs to forward the frame whose destination mac address is 5489-98ec-f011, which of the following descriptions is correct?

The switch will send a destination unreachable message to the source device

The switch does not find a matching entry in the mac address table, so it will drop the frame

The switch needs to send a request to discover the device with the mac address 5489-98ec-f011

The switch will flood the frame on all ports except the port that received the frame

22. According to the command output shown in the figure, which of the following descriptions is correct? (Multiple choice)

GigabitEthernet0/0/1 allows VLAN1 to pass through

GigabitEthernet0/0/1 does not allow VLAN1 to pass through

If you want to change GigabitEthernet0/0/1 into an Access port, you first need to use the command "undo port trunk allow-pass vlan all"

If you want to change GigabitEthernet0/0/1 into an Access port, you first need to use the command "undo port trunk allow-pass vlan 2 to 4094"

23. According to the command shown in the figure, which of the following descriptions is correct? (Multiple choice)

The PVID of port GigabitEthernet0/0/1 is 1

The PVID of port GigabitEthernet0/0/2 is 1

The PVID of port GigabitEthernet0/0/2 is 10

The PVID of port GigabitEthernet0/0/1 is 10

24. If the Length/type=0x8100 of an Ethernet data frame, which of the following statements is correct?

The upper layer of this data frame must have a UDP header

There must be a TCP header in the upper layer of this data frame

This data frame must carry VLAN TAG

The upper layer of this data frame must have an IP header

25. The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge ID switches will become the root bridge?

4096 00-01-02-03-04-DD

32768 00-01-02-03-04-AA

32768 00-01-02-03-04-BB

32768 00-01-02-03-04-CC

26. Which of the following statements about the election of active ports in link aggregation LACP mode is correct?

Compare the interface priority first, if you cannot determine the superior one, continue to compare the interface number, the smaller the better

Only compare interface priorities

Compare device priorities

Only compare interface numbers

27. The MAC address of the existing switch is shown in the figure, which of the following statements is correct?

When the switch restarts, the MAC address learned by port Eth0/0/2 does not need to be relearned

The data frame with source MAC address 5489-9885-18a8 and destination MAC address 5489-989d-1d30 learned from the port is forwarded from Eth0/0/1 port

The data frame with source MAC address 5489-9811-0b49 and destination MAC address 5489-989d-1d30 learned from the port is forwarded from Eth0/0/2 port

When the switch restarts, the MAC address learned by port Eth0/0/3 needs to be relearned

28. As shown in the figure below, all hosts can communicate normally. Which of the following statements is correct? (Multiple choice)

G0/0/3 of SWB learned 2 mac addresses

G0/0/3 of SWA learns a mac address

G0/0/3 of SWA learns 2 mac addresses

G0/0/3 of SWA learns 3 mac addresses

29. Which of the following statements about Hybrid ports is correct?

The Hybrid port can strip the tags of certain vlan frames in the direction of the outgoing port

When the Hybrid port sends a data frame, it must carry the vlan tag

Hybrid ports only receive data frames with vlan tag

Hybrid port does not require PVID

30. The function of telnet.read_very_eager in Telnetlib is to read data non-blockingly. Usually needs to be used together with the time module.

True

False

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31. For a switch running the STP protocol, the port can be directly converted to the Disabled state in any state.

True

False

32. The IPv6 address 2001:ABEF:224E:FFE2:BCCO:CDOO:DDBE:8D58 cannot be abbreviated.

True

False

33. Using the commands "vlan batch 10 20 " and "valn batch 10 to 20 ", what is the number of VLANs that can be created?

11 and 11

2 and 2

11 and 2

2 and 11

34. The Layer 2 switch belongs to the data link layer device, which can identify the mac address information in the data frame, forward the data according to the mac address, and record these mac addresses and corresponding port information in its own mac address table.

True

False

35. In the configuration BPDU sent by the switch, which bridge ID cannot appear?

8192 00-01-02-03-04-CC

2048 00-01-02-03-04-CC

4096 00-01-02-03-04-CC

0 00-01-02-03-04-CC

36. If there is an inclusion relationship in the configured ACL rules, it should be noted that the rule numbers of the strict conditions need to be sorted first, and the rule numbers of the loose conditions need to be sorted last, so as to prevent the packet from stopping to continue matching due to hitting the rules of the loose conditions, thereby Rules that make it impossible to hit strict conditions.

True

False

37. The network administrator configures the Huawei router RTA as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", which of the following descriptions is correct?

[RTA] aaa

[RTA-aaa] domain huawei

[RTA-aaa-domain huawei] authentication-scheme au1

[RTA-aaa domain-huawei] authentication-scheme au2

will use "authentication-scheme au1" authentication

"authentication-scheme au1" authentication will be used, if "au1" is removed, "au2" authentication will be used

"authentication-scheme au2" authentication will be used, if "au2" is removed, "au1" authentication will be used

will use "authentication-scheme au2" authentication

38. What is the number range of Layer 2 ACL?

4000-4999

2000-2999

6000-6031

3000-3999

39. What is the number range of the advanced ACL?

2000-2999

4000-4999

6000-6031

3000-3999

40. If the packet matches the ACL and the result is "deny", the packet will be discarded eventually.

True

False

Page 5 of 27

41. Which of the following message types does DHCP contain? (Multiple choice)

DHCP OFFER

DHCP REQUEST

DHCP ROLLOVER

DHCP DISCOVER

42. What is the main function of the DNS protocol?

File Transfer

Remote access

Domain name resolution

Mail transfer

43. Which of the following protocols is not a file transfer protocol?

FTP

SFTP

HTTP

TFTP

44. Only the security policy of WPA2-PSK supports the use of TKIP for data encryption.

True

False

45. Which of the following does not include the advantages of Wi-Fi6 over Wi-Fi5?

Higher consumption

Higher number of access terminals per AP

Lower transmission delay

Higher bandwidth

46. The port numbers used in the control tunnel and data tunnel transmission of CAPWAP are the same.

True

False

47. What is the first operation to be performed after the FIT AP obtains the IP address of the AC?

Establish a CAPWAP tunnel

Request a configuration file

Download configuration file

Upgrade the software version

48. Before the STA associates with the AP, it needs to exchange some messages to obtain the SSID. Which of the following are these messages? (Multiple choice)

Probe Response

Probe Request

Beacon

Discovery

49. Based on what concept is segment routing SR (segment routing) a protocol designed to forward data packets on the network?

Policy Routing

Source routing

Routing Policy

Destination routing

50. In PPP, when the two ends of the communication detect the activation of the physical link, they will transition from the link unavailable stage to the link establishment stage. In this stage, the link parameters are mainly negotiated through the () protocol

LCP

NCP

DHCP

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51. SNMP V1 defines 5 protocol operations.

True

False

52. MIB (management information base) is a virtual database that only exists on the NMS.

True

False

53. There is a TTL field in the header of the IP packet. Which statement about this field is correct?

This field is used for data packet loop prevention

This field is used for packet fragmentation

This field is used to indicate the priority of the data packet

The length of this field is 7 bits

54. What is the length of the basic IPv6 header Byte?

55. Which field in the IPV6 header is similar to the TTL field in the IPV4 header?

hop limit

Next header

Traffic class

Version

56. The function of telnet.read.all() in telnetlib is to read all the data until EOF. If the echo does not return EOF, it will be blocked consistently.

True

False

57. In the SNMP protocol by default, which port number is used by the agent process to send alarm messages to the NMS?

161

163

164

162

58. If the MAC address of an interface is 00E0-FCEF-0FEC, then its corresponding EUI-64 address is?

00E0-FCEF-FFFE-0FEC

02E0-FCFF-FEEF-0FEC

00E0-FCFF-FEEF-0FEC

02E0-FCEF-FFFE-0FEC

59. Which of the following commands can be used to query the configuration information of the ospf protocol of the device?

Enter the command "display this" in the ospf protocol view

Display current-configuration

Display ospf peer

Dis ip routing-table

60. The ARP protocol can resolve the MAC address of the target device according to the target IP address, thereby realizing the mapping between the MAC address and the IP address.

True

False

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61. Under the VRP interface, use the command startup saved-configuration backup.cfg to configure the backup.cfg file to be used at the next startup.

True

False

62. Which method does VRP not support to configure the router?

Configure the router through the mini USB port

Configure the router via FTP

Configure the router through the console port

Configure the router through telnet

63. When routers are running in the same OSPF area, which is the correct description of their LSDB and routing table? (Multiple choice)

All routers get the same link-state database

The routing table obtained by all routers is the same

The link state database obtained by each router is different

The routing table of each router is different

64. Which of the following statements is correct?

The router works at the network layer

The switch works at the physical layer

The switch works at the network layer

The router works at the physical layer

65. After the network administrator uses the Tracert Route function on the router device, in the data packet sent by the router, the value of the protocol field of the IPV4 header is?

66. Which of the following protocols are dynamic routing protocols? (Multiple choice)

Direct

static

BGP

OSPF

67. The output information of the router is shown in the figure, which of the following statements is wrong?

The broadcast address corresponding to the Ethernet0/0/0 interface is 10.0.12.255

The physical link of the Ethernet0/0/0 interface is normal

The MTU value of the Ethernet0/0/0 interface is 1480

The IP address of the Ethernet0/0/0 interface is 10.0.12.1/24

68. When configuring OSPF on a router, what must be manually configured? (Multiple choice)

Specify the network type of each OSPF-enabled interface

Create an OSPF area

Create an OSPF process

Configure Router ID

69. The figure below shows the routing table of a certain router. When the router receives a data packet with the destination IP address 9.1.1.1, the router will forward it according to the route 9.1.0.0/16, because the mask of this route The yard length is longer.

True

False

70. If the network address of a network is 10.1.1.0/30, then what is its broadcast address?

10.1.1.3

10.1.1.1

10.1.1.4

10.1.1.2

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71. The administrator has configured on R1 as shown in the figure, but R1 cannot learn the routes of other routers, so what is the possible reason? (Multiple choice)

[R1] ospf

[R1-ospf-1] area 1

[R1-ospf-1-area-0.0.0.1] network 10.0.12.0 0.0.0.255

This router did not advertise the network connected to the neighbor when configuring OSPF

This router is not configured with the authentication function, but the neighbor router is configured with the authentication function

When this router is configured, no OSPF process number is configured

The area ID configured by this router is different from the area ID of its neighbor routers

72. The router running the OSPF protocol first reaches the FULL state, and then performs LSDB synchronization.

True

False

73. Which type of message is used by network devices running SNMPv1 protocol to actively send alarm information?

Trap

Response

Get-Next Request

Get-Request

74. Which one is wrong about the description of the information shown in the picture?

[R1] display interface g0/0/0

GigabitEthernet0/0/0 current state: Administratively DOWN

Line protocol current state: DOWN

The GigbitEthernet0/0/0 interface is connected to a wrong cable

GigbitEthernet0/0/0 interface is not configured with an IP address

The GigbitEthernet0/0/0 interface is manually shut down by the administrator

GigbitEthernet0/0/0 interface is not enabled with dynamic routing protocol

75. What is the function of the hello message of ospf? (Multiple choice)

Neighbor Discovery

Synchronize router's LSDB

Update LSA information

Maintain Neighborhood Relationships

76. The output information of a router’s routing table is shown in the figure, which of the following statements is correct? (Multiple choice)

The outbound interface of this router reaching 10.0.0.1 is Ethernet0/0/1

The outbound interface of this router reaching 10.0.0.1 is Ethernet0/0/0

The outbound interface of this router reaching 10.0.2.2 is Ethernet0/0/0

The outbound interface of this router reaching 10.0.2.2 is Ethernet0/0/1

77. Which of the following statements about the main function of the router is wrong? (Multiple choice)

Guide data forwarding according to the routing table

Build routing tables through multiple protocols

Realize mutual communication between devices on the same network segment

Forward according to the source IP address of the received data packet

78. If the Ethernet data frame Length/type=0x0806, which of the following statements is correct? (Multiple choice)

The destination MAC address of this data frame may be FFFF-FFFF-FFFF

The source MAC address of this data frame must not be FFFF-FFFF-FFFF

This data frame is an IEEE 802.3 frame

This data frame is an Ethernet II frame

79. In the network shown in the figure, which of the following descriptions is correct? (Multiple choice)

The network between RTA and SWC is the same collision domain

The network between SWA and SWB is the same broadcast domain

The network between SWA and SWC is the same collision domain

The network between SWA and SWC is the same broadcast domain

80. In the figure below, all the switches have enabled the STP protocol. Assuming that the path cost value of all ports is 200, what is the root path cost value contained in the configuration BPDU message received by the G0/0/4 port of SWD?

200

400

600

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81. As shown in the figure, the switch uses the default parameters to run STP, which of the following ports will be elected as the designated port?

G0/0/1 port of switch A

G0/0/1 port of HUB

G0/0/2 port of HUB

G0/0/2 port of switch A

82. The network administrator has captured a data frame in the network, and its destination MAC address is 01-00-5E-A0-B1-C3.

Which statement about the mac address is correct?

It is a multicast MAC address

It is a unicast MAC address

It is an illegal MAC address

It is a broadcast MAC address

83. As shown in the figure below, if all hosts can communicate normally, which is the correct relationship between MAC addresses and ports in the MAC address table of SWB?

MAC-A G0/0/1 MAC-B G0/0/2 MAC-C G0/0/1

MAC-A G0/0/2 MAC-B G0/0/2 MAC-C G0/0/3

MAC-A G0/0/1 MAC-B G0/0/2 MAC-C G0/0/3

MAC-A G0/0/1 MAC-B G0/0/1 MAC-C G0/0/3

84. LACP protocol priority as shown in the figure, switch A and switch B adopt LACP mode link aggregation, and all interfaces are added to the link aggregation group, and the maximum number of active ports is set to 3, which port of switch A is not active port?

G0/0/0

G0/0/1

G0/0/2

G0/0/3

85. Which of the following stages is not included in the process of PPPoE session establishment and termination?

Discovery phase

Data Forwarding Phase

Session phase

Session termination phase

86. Which of the following parameters should be considered when electing the root port in STP? (Multiple choice)

The mac address of the port

Port priority

Port slot number, such as G0/0/1

Duplex mode of the port

The cost of the port reaching the root switch

87. In the network shown in the figure below, the router uses a sub-interface as the host gateway. The gateway IP address is 10.0.12.2. Which of the following commands can achieve this requirement? (Multiple choice)

interface GigabitEthernet0/0/0.20 dot1q termination vid 10 Ip address 10.0.12.2 255.255.255.0 arp broadcast enable #

interface GigabitEthernet0/0/0.10 dot1q termination vid 10 Ip address 10.0.12.2 255.255.255.0 arp broadcast enable #

interface GigabitEthernet0/0/0.20 dot1q termination vid 20 Ip address 10.0.12.2 255.255.255.0 arp broadcast enable #

interface GigabitEthernet0/0/0.10 dot1q termination vid 20 Ip address 10.0.12.2 255.255.255.0 arp broadcast enable #

88. Which of the following statements about the election of the active end in link aggregation LACP mode is correct? (Multiple choice)

Compare interface numbers

The one with the smaller priority value is preferred. If they are the same, compare the device MAC, the smaller the better

The device with a small system priority value is used as the active end

The device with a small MAC address acts as the active end

89. If the value of the Type/Length field of an Ethernet data frame is 0x0800, the length range of the upper layer message header carried by this data frame is 20-60B.

True

False

90. The IP addresses of the VLANIF interfaces of the same switch cannot be the same.

True

False

Page 10 of 27

91. Which of the following commands configures the authentication mode as HWTACAS authentication?

authentication-mode hwtacacs

authentication-mode none

Authorization-mode hwtacacs

Authorization-mode local

92. The host must go through NAT when using the IP address 192.168.1.2 to access the Internet.

True

False

93. Layer 2 ACL can match source MAC, destination MAC, source ip, destination IP and other information.

True

False

94. Which of the following statements about the S field in the MPLS packet header is correct? (Multiple choice)

The S bit exists in each MPLS packet header

It is used to mark whether there are other labels after this label, 0 means yes, 1 means no

The S bit is only 1 bit in the frame mode and 2 bits in the cell mode

It is used to mark whether there are other labels after this label, 1 means yes, 0 means no

95. Among the configurations in the following options, which ones belong to the Layer 2 ACL? (Multiple choice)

rule 25 permit source 192.168.1.1 0.0.0.0

rule 10 permit 12-protocol arp

rule 25 permit source-mac 0203-0405-0607

rule 25 permit vlan-id 100

96. The administrator has configured the Router as shown in the figure, so what kind of IP address can a host connected to the G1/0/0 interface of the router obtain through DHCP?

The IP address obtained by the host belongs to the 10.10.10.0/24 network

The IP address obtained by the host belongs to the 10.20.20.0/24 network

The IP address obtained by the host may belong to the 10.10.10.0/24 network or the 10.20.20.0/24 network

The host cannot obtain the address

97. A DHCP server is deployed in the network, but the administrator finds that some hosts have not correctly obtained the address specified by the DHCP server. What are the possible reasons? (Multiple choice)

Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses within the range of 172.254.0.0

There is another DHCP server with higher working efficiency in the network

Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses within the range of 169.254.0.0

The address pool of the DHCP server has been fully allocated

98. What is the IEEE802.11 standard corresponding to Wi-Fi6?

IEEE802.11au

IEEE802.11ac

IEEE802.11ax

IEEE802.11at

99. WiFi6 actually refers to the IEEE802.11ax standard.

True

False

100. When the AP and AC are in different three-layer networks, which method is recommended for the AP to discover the AC?

DNS

Manually specified on the AP

DHCP

Broadcast method

Page 11 of 27

101. The data link layer uses PPP encapsulation, and the IP addresses at both ends of the link may not be in the same network segment.

True

False

102. FIT AP can work independently without AC.

True

False

103. SNMP messages are carried by UDP.

True

False

104. The network management system can only view the running status of the device through the SNMP protocol but cannot deliver the configuration.

True

False

105. Which of the following types does an IPV6 address contain? (Multiple choice)

Anycast address

Multicast address

Unicast address

Broadcast address

106. How many bits is the total length of the IPV6 address?

128

107. When using the SNMPv1 protocol to manage network devices, which of the following commands does the network management system use to complete the configuration of the network devices?

Get-Request

Response

Set Request

Get-Next Request

108. The virtual machine is the basis for realizing NFV. Which of the following statements about the characteristics of virtualization is correct? (Multiple choice)

Partitioning: Multiple virtual machines can run concurrently on a single physical network

Isolation: Virtual machines on the same physical server are isolated from each other

Encapsulation: Virtual machines all share an operating space, and encapsulation is achieved through namespaces

Hardware independence: Virtual machines and hardware decoupling support migration of virtual machines between servers

109. Which of the following options describes the concept of NFV architecture correctly? (Multiple choice)

VNFM, virtual network function management, is responsible for the life cycle management of VNF

NFVO (NFV Orchestrator) is responsible for business orchestration

MANO consists of NFVO, VNFM and VIM

VIM (Virtualized Infrastructure Manager) virtual resource management, responsible for the virtualization of infrastructure

110. Which of the following commands can change the device name to huawei?

sysname huawei

rename huawei

do name huawei

hostname huawei

Page 12 of 27

111. On the VRP platform, which of the following methods can be used to access the last historical command? (Multiple choice)

Ctrl+P

Cursor up

Ctrl+U

Left cursor

112. The login timeout time in the VRP system can only be set under the VTY interface.

True

False

113. Which of the following types of ACL can match the transport layer port number?

Advanced ACLs

Basic ACLs

Layer 2 ACL

Intermediate ACLs

114. In the network shown in the figure below, the router receives a data packet with the destination IP address 11.0.12.1 from host A. After the data packet is forwarded by the router, the destination mac and destination IP are respectively?

MAC-D 10.0.12.2

MAC-D 11.0.12.1

MAC-C 11.0.12.1

MAC-B 11.0.12.1

115. Which devices are generally involved in the WLAN deployment scheme in the enterprise scenario? (Multiple choice)

AC (Access Controller)

PoE switch

CPE

116. The routing table shown in the figure, which of the following statements is correct? (Multiple choice)

The router forwards the packet with the destination IP 10.0.2.2 from Ethernet0/0/0

The NextHop of the destination network 10.0.3.3/32 is not directly connected, so the router will not forward the data packet with the destination IP address 10.0.3.3

The router forwards the packet with the destination IP 10.0.3.3 from Ethernet0/0/0

The router forwards the packet with the destination IP 10.0.12.1 from Ethernet0/0/0

117. In order to detect the connectivity status of the CAPWAP tunnel, which of the following CAPWAP packets does the AC use for detection after the CAPWAP tunnel is established? (Multiple choice)

Keepalive

Echo

DPD

Hello

118. In the network shown in the figure below, all routers run the OSPF protocol, and the link cost value is shown in the figure, what is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table?

100

119. As shown in the figure below, which of the following statements is correct?

Host A can ping host B through

Host A and host B can communicate only if the masks of host A and host B are set to be the same

The IP address masks of host A and host B are different, so host A and host B cannot communicate

The broadcast addresses of host A and host B are the same

120. When two OSPF routers form a 2-WAY neighbor relationship, the LSDB has been synchronized.

True

False

Page 13 of 27

121. In the network shown in the figure below, host A is not configured with a gateway, and host B has an ARP cache of the gateway. Which of the following statements is correct? (Multiple choice)

Enable ARP proxy on the router G0/0/1 port, then host A can communicate with host B

The data packet sent by host B with the destination IP address 10.0.12.1 can be forwarded to host A

The data packet sent by host A with the destination IP address 11.0.12.1 can be forwarded to host B

Host A and host B cannot communicate bidirectionally

122. Which of the following commands to configure the default route is correct?

[huawei] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0

[huawei] ip route-static 0.0.0.0 255.255.255.255 192.168.1.1

[huawei-Serial0] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0

[huawei] ip route-static 0.0.0.0 0.0.0.0 192.168.1.1

123. The network administrator hopes to effectively use the IP address of the 192.168.176.0/25 network segment.

Now the company's marketing department has 20 hosts, which of the following address segments should be assigned to the marketing department?

192.168.176.160/27

192.168.176.0/25

192.168.176.96/27

192.168.176.48/29

124. If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255.

True

False

125. What are the functions of DR and BDR in OSPF protocol? (Multiple choice)

Reduce the number of adjacencies

Reduce the time for adjacency establishment

Reduce the types of OSPF protocol packets

Reduce the number of exchanges of link state information

126. As shown in the figure below, which port of the following switch will be blocked?

G0/0/2 of SWC

G0/0/3 of SWA

G0/0/1 of SWC

G0/0/3 of SWB

127. When a port of Access type sends a message, it will ().

Mark the PVID information of this port, and then send it out

Send a tagged message

Strip the VLAN information of the message, and then send it out

Add the VLAN information of the message, and then send it out

128. RSTP protocol does not include which of the following port states?

Forwarding

Learning

Discarding

Blocking

129. Referring to the configuration of one-arm routing in the figure below, it can be judged that even if the ARP proxy is not enabled on the sub-interface of R1, the administrative department and the financial department can communicate with each other.

True

False

130. The output information of a certain switch is shown in the figure, which of the following statements is correct? (Multiple choice)

Switch GE0/0/1 port does not carry VLAN TAG when sending VLAN20 data frames

When the GE0/0/2 port of the switch sends the data frame of VLAN20, it carries the VLAN TAG

When GE0/0/1 port of the switch sends VLAN10 data frames, it does not carry VLAN TAG

The user manually created 4 VLANs

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131. If the Length/Type=0×8100 of an Ethernet data frame, which of the following ports may this data frame be sent from? (Multiple choice)

Switch Trunk type ports

Hybrid port of the switch

Access port of the switch

Serial interface of the router

132. The load sharing modes at both ends of the Eth-Trunk may be inconsistent.

True

False

133. The port in the Discarding state in RSTP will discard the received data frames, but it can maintain the MAC address table according to the data frames received by the port.

True

False

134. When LACP is used for horizontal link aggregation, what is the default system priority of Huawei switches?

36864

24576

4096

32768

135. Which of the following descriptions about Layer 2 Ethernet switches is wrong?

Layer 2 Ethernet switches work at the data link layer

Able to learn MAC address

It is necessary to make certain modifications to the layer 3 header of the forwarded message, and then forward it

Forward according to the layer 2 header information of the Ethernet frame

136. As shown in the figure, the network administrator creates VLAN2 on SWA and SWB, and configures the ports connected to hosts on the two switches as Access ports, and assigns them to VLAN2. G0/0/1 of SWA and G0/0/2 of SWB are configured as trunk ports, allowing all VLANs to pass through.

To achieve normal communication between the two hosts, you also need?

Configure G0/0/1 on the SWC as a trunk port and allow VLAN 2 to pass through, set G0/0/2 as an access port, and set PVID to 2

Create VLAN2 on SWC, configure G0/0/1 and G0/0/2 as trunk ports, and allow VLAN 2 to pass through

Just create BLAN2 on SWC

Configure G0/0/1 on the SWC as a trunk port and allow VLAN 2 to pass through

137. In the RSTP standard, in order to improve the convergence speed, the port that the switch is directly connected to the terminal can be defined as?

Fast port

Root port

Backup port

Edge port

138. In a Layer 2 network with redundant links, which of the following protocols can be used to avoid loops?

VRRP

STP

ARP

UDP

139. In the network shown in the figure below, all switches enable the STP protocol. Close the G0/0/2 port of SWA and configure the BPDU sending function, and G0/0/1 of SWC will re-converge to become the root port. Regarding this process, which of the following statements is correct? (Multiple choice)

SWB forwards TCN BPDU to SWA

SWB sends a configuration BPDU with TCA set to SWC

SWC sends TCN BPDU to SWB

SWA sends a configuration BPDU with TC set

140. In the network shown in the figure below, from the perspective of security, router A refuses to receive OSPF packets and ICMP packets received from the G0/0/1 interface. Which of the following commands can achieve this requirement? (Multiple choice)

acl number 3000 rule 5 deny 89 rule 10 deny icmp # interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 #

acl number 3000 rule 5 deny 89 rule 10 deny 1 # interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 #

acl number 2000 rule 5 deny 89 rule 10 deny 1 # interface GigabitEthernet0/0/1 traffic-filtet inbound acl 2000 #

acl number 3000 rule 5 deny ospf rule 10 deny icmp # interface GigabitEthernet0/0/1 traffic-filtet inbound acl 3000 #

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141. Which of the following statements about the ACL matching mechanism is correct? (Multiple choice)

Which of the following statements about the ACL matching mechanism is correct?

If the ACL does not exist, the ACL matching result is returned: no match

If the last rule packet is still not matched, the ACL matching result will be returned: no match

By default, the search starts from the rule with the smallest number in the AC

Once a rule is matched, the search for subsequent rules is stopped.

No matter whether the result of the packet matching ACL is "mismatch", "permit" or "deny", whether the packet is finally allowed or denied is actually determined by each business module that applies the ACL

142. As shown in the figure, static NAT commands are deployed on router R1. When the PC accesses the Internet, the destination address in the data packet will not change.

True

False

143. Which of the following types of ACL cannot match network layer information?

Basic ACLs

Layer 2 ACL

User ACLs

Advanced ACL

144. The ACL configuration information of a certain router is shown in the figure, which of the following statements is correct?

#

acl number 2000

rule 5 permit source 192.168.1.1 0

rule 10 deny source 192.158.1.1 0

#

The data packet whose source IP address is 192.168.1.254 is matched by the permit rule

Data packets with source IP addresses 192.168.1.1 and 192.168.1.254 are matched by the permit rule

The data packet whose source IP address is 192.168.1.1 is matched by the permit rule

The packet with the source IP address 192.168.1.1 is matched by the deny rule

145. What is the main function of the DHCP DISCOVER message?

The server's confirmation response to the REQUEST message

The client is used to find the DHCP server

The client requests configuration confirmation, or renews the lease

The DHCP server is used to respond to the DHCP DISCOVER message, which carries various configuration information

146. The administrator has configured the router as shown in the figure, and at the same time the administrator wants to assign a shorter lease period to the DHCP address. Which of the following commands should be used?

ip pool pool1

network 10.10.10.0 mask 255.255.255.0

gateway-list 10.10.10.1

Lease 0

Dhcp select relay

Lease day 0 hour 10

Lease 24

147. Which of the following IEEE 802.11 standards support working in the 5GHz frequency band? (Multiple choice)

802.11n

802.11ax

802.11a

802.11g

148. The configuration of the country code will affect the frequency used for actual transmission and the maximum transmission power.

True

False

149. The CAPWAP protocol specifies the communication standard between the AC and the AP. Which of the following statements about the CAPWAP protocol is correct?

CAPWAP is an application layer protocol based on TCP transmission

In order to reduce the burden on the AP, CAPWAP uses a tunnel to transmit control messages and data messages at the same time

The AP can encapsulate the user's data packet in CAPWAP and hand it over to the AC for forwarding

In order to establish a CAPWAP tunnel, the Fit AP can only discover the AC through broadcast packets

150. The FIT AP can obtain the IP address of the AC through the DHCP Option to establish a CAPWAP tunnel. Which Option should be configured on the DHCP server?

Option 10

Option 55

Option 43

Option 82

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151. How many types of data flows with different service levels can be marked at most based on MPLS labels?

152. An explicit path can be easily defined through SR (Segment Routing). Nodes in the network only need to maintain Segment Routing information to cope with real-time and rapid business development.

What are the following characteristics of Segment Routing? (Multiple choice)

SR (Segment Routing) uses IP forwarding, and does not need to maintain another label forwarding table

Support the centralized control mode of the controller and the distributed control mode of the transponder at the same time, providing a balance between centralized control and distributed control

By extending existing protocols (such as IGP), the existing network can evolve smoothly

Using source routing technology to provide the ability to quickly interact between the network and upper-layer applications

153. Which of the following port numbers is used by network devices running SNMPv2c protocol to send Trap messages to the network management system by default?

161

162

154. In the STP protocol, the Message Age in the configuration BPDU sent by the root bridge is 0.

True

False

155. Which field is added to the IPv6 header compared to the IPv4 header?

Destination Address

Source Address

Flow Label

Version

156. Which of the following protocols does the RA packet used by IPv6 stateless autoconfiguration belong to?

UDPv6

ICMPv6

IGMPv6

TCPv6

157. Which of the following IPv6 addresses is a global unicast address?

2001::12:1

FE80::2E0:FCFF:FEEF:FEC

FF02::2E0:FCFF:FEEF:FEC

FF02::1

158. The origin of SDN is the separation of transfer and control. Separation of control and control is a method but not the essence of realizing SDN.

True

False

159. How many more bytes are there in the packet using MPLS label double nesting technology than the original IP packet?

160. Use the command mkdir test on the VRP operating platform, and the system will create a directory named test.

True

False

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161. Both the pwd and dir commands in the VRP operating platform can view the file information in the current directory.

True

False

162. Which of the following commands can be used to check whether OSPR has correctly established a neighbor relationship?

display ospf interface

display ospf peer

display ospf neighbor

display ospf brief

163. Which of the following routing protocols has the highest priority?

Static

OSPF

Direct

RIP

164. A host can directly use which of the following IPv4 addresses to directly access the Internet?

172.16.255.254/24

10.255.255.254/24

192.168.1.1/24

172.32.1.1/24

165. The priority of static routing protocols cannot be manually specified.

True

False

166. The output information of a certain router is shown in the figure, which of the following statements is correct? (Multiple choice)

The DR priority of this routing interface is 10

The cost value of this interface is 1

This router is BDR

Router ID is 10.0.1.1

167. If the Proto of a certain routing information in the routing table is OSPF, then the priority of this routing must be 10.

True

False

168. Which of the following statements about static routing in Huawei equipment is wrong?

When the priority of a static route is 0, the route will definitely be preferred.

The cost value (Cost) of the static route cannot be modified.

The default value of static route priority is 60

The range of static route priority value is 1-255

169. On a broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages.

True

False

170. Which state does the OSPF protocol use to indicate that the adjacency relationship has been established?

2-way

Full

Down

Attempt

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171. On the VRP platform, what is the order of the default protocol priorities of direct routes, static routes, RIP, and OSPF intra-area routes from high to low?

Direct routing, OSPF, RIP, static routing

Direct routing, static routing, RIP, OSPF

Direct routing, OSPF, static routing, RIP

Direct routing, RIP, static routing, OSPF

172. How to deal with when the Access port sends data frames?

Mark PVID forwarding

Send a message with TAG

Replace VLAN TAG forwarding

Strip TAG forwarding

173. User cannot configure VLAN ID as 0.

True

False

174. Trunk ports can send both labeled data frames and unlabeled data frames.

True

False

175. In the network shown in the figure below, in the MAC address tables of SWA and SWB, which of the MAC address, VLAN, and port correspondences are correct? (Multiple choice)

SWB: MAC Address VLAN Port MAC-A 100 GE0/0/3 MAC-B 200 GE0/0/3 MAC-C 100 GE0/0/1

SWA: MAC Address VLAN Port MAC-A 10 GE0/0/1 MAC-B 20 GE0/0/2 MAC-C 100 GE0/0/3

SWB: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/1

SWA: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/3

176. In the STP protocol, assuming that all switches are configured with the same priority, the MAC address of switch 1 is 00-e0-fc-00-00-40, and the MAC address of switch 2 is 00-e0-fc-00-00 -10 The MAC address of switch 3 is 00-e0-fc-00-00-20, and the MAC address of switch 4 is 00-e0-fc-00-00-80, so the root switch should be?

Switch 3

Switch 4

Switch 2

Switch 1

177. When the port of the switch receives a data frame without VLAN TAG, it must add PVID.

True

False

178. In the RSTP protocol, when an edge port receives a configuration BPDU message, it loses the edge port attribute.

True

False

179. The LACP mode of link aggregation uses LACPDU to elect the active end. What information in the LACPDU is the basis for electing the LACP active end? (Multiple choice)

Interface number

Interface priority

Device priority

MAC address

180. In which working state of the port in the STP protocol can it be transferred to the Forwarding state without going through other states?

Listening

Learning

Disabled

Blocking

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181. Hybrid ports can be connected to both user hosts and other switches.

True

False

182. The configuration information of the switch G0/0/1 port is shown in the figure, which VLAN data frame does not carry the VLAN TAG when the switch forwards?

#

interface GigabitEthernet0/0/1

port link-type trunk

port trunk pvid vlan 10

port trunk allow-pass vlan 10 20 30 40

#

183. On the switch, which VLANs can be deleted by using the undo command? (Multiple choice)

Vlan 1

Vlan 2

Vlan 1024

Vlan 4094

184. Which of the following is not the reason why RSTP can improve the convergence speed?

Fast switchover of the root port

Introduction of edge ports

Cancel Forward Delay

P/A Mechanism

185. A company has 50 private IP addresses. The administrator uses NAT technology to connect the company network to the public network, but the company only has one public network address and it is not fixed. Which of the following LNAT conversion methods meets the requirements?

NAPT

Basic NAT

Static NAT

easy-ip

186. Which of the following parameters cannot be used in advanced access control lists?

Time frame

Destination port number

Physical interface

Agreement number

187. An ACL rule is as follows: Which of the following IP addresses can be matched by the permit rule rule 5 permit ip source 10.0.2.0 0.0.254.255? (Multiple choice)

7.1.2.1

9.1.1.1

8.2.2.1

6.1.3.1

188. Among the following options, what is the necessary technology to enable a host with an IP address of 10.0.0.1 to access the Internet?

Static routing

Dynamic Routing

NAT

Route import

189. The following rules exist in an ACL of a router:

rule deny tcp source 192.168.2.0 0.0.0.255 destination 172.16.10.2 0.0.0.0

Which of the following statements is correct?

All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.1 match this rule

All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.2 match this rule

All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.1 match this rule

All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.0 match this rule

190. Which of the following applications is based on the TCP protocol? (Multiple choice)

TFTP

FTP

HTTP

Ping

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191. What is the port number used by the FTP protocol control plane?

192. When using FTP for file transfer, how many TCP connections will be established?

193. How to add AP on AC? (Multiple choice)

Import AP offline

Manually confirm the AP in the unauthenticated list

Automatically discover APs

Add online

194. In order to join a wireless network, TA needs to obtain wireless network information first. Which of the following messages does STA use to actively obtain SSID information?

Join

Discovery

Beacon

Probe

195. In order for the STA to obtain SSID-related information on the AP, which of the following messages does the AP use to actively declare the wireless network SSID information?

Join

Beacon

Discovery

Probe

196. After the link authentication is completed, the STA will continue to initiate link service negotiation. The specific negotiation is realized through which of the following messages?

Association

Negotiate

Handshake

Join

197. What is the mode for the AP to obtain the version from the AC to upgrade? (Multiple choice)

FTP mode

SFTP mode

TFTP mode

AC mode

198. The MPLS label header is encapsulated between the data link layer header and the network layer header of the message.

True

False

199. Which of the following commands can be used to view the CPU usage of the router?

display cpu-usage

display memory

display cpu-state

display interface

200. SNMP consists of which of the following parts? (Multiple choice)

Managed objects

Network management system

Management Information Base

Agent process

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201. Which category does the IPv6 address FE80::2E0:FCFF:FE6F:4F36 belong to?

Multicast address

Global Unicast Address

Link-local address

Anycast address

202. Which of the following statements about the Python language is wrong? (Multiple choice)

Python generally executes code sequentially from beginning to end.

Pay attention to the use of comments when writing code to help people who read the code understand. Comments start with =.

The Python language supports automatic indentation, so you don't need to pay attention when writing code.

The function of print () is to output the content inside the brackets.

203. The role of the collaboration layer in the SDN architecture is to complete service deployment based on user intentions. OpenStack belongs to the business collaboration layer.

True

False

204. The administrator wants to update the VRP version of the Huawei router, what is the correct way? (Multiple choice)

The administrator configures the router as an FTP server to transfer the VRP software through FTP

The administrator sets the router as an FTP client, and transfers the VRP software through FTP

The administrator configures the router as a TFTP client to transmit the VEP software through TFTP

The administrator configures the router as a TFTP server and transmits the VRP software through TFTP

205. The output information of a certain device is shown in the figure, which of the following statements is correct? (Multiple choice)

The standby main control board of the device is running normally

The VRP operating version of the device is CRP5

The name of the device is Huawei

The device has been running for 1 minute

206. How many ways does VRP support to configure the router? (Multiple choice)

Configure the router through Telnet

Configure the router through the Console port

Configure the router via FTP

Configure the router through the mini USB port

207. As shown in the figure, the G0/0/0 and G0/0/1 interfaces of RTA are respectively connected to two different network segments, and RTA is the gateway of these two networks.

Before host A sends data to host C, it will first send an ARP Request to obtain the MAC address of ()?

host

G0/0/1 interface of RTA

G0/0/0 interface of RTA

208. When the router forwards a data packet, if it does not match the corresponding detailed route and there is no default route, it will directly discard the data packet.

True

False

209. The header length field of an IPv4 data packet is 20B, and the total length field is 1500B, so the payload of this data packet is?

1480B

1520B

20B

1500B

210. A routing entry contains multiple elements. Which of the following statements is wrong?

NextHop displays the local interface address corresponding to this routing entry

Pre shows the priority of this routing protocol

Destination/Mask displays the address and mask length of the destination network/host

Proto shows the source from which this route was learned

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211. VRP supports OSPF multi-process. If no process number is specified when OSPF is enabled, the default process number is?

1 _

100

212. An AR2200 router needs to restore the initial configuration, which of the following operations are necessary? (Multiple choice)

Reset the saved configuration

Clear the current configuration

Restart the AR2200 router

Re-specify the configuration file loaded at next startup

213. The administrator configures OSPF on a certain router, but no loopback interface is configured on this router. What is the correct description of the Router ID below?

The priority of the router will become the Router ID

The IP address of the router's management interface will become the Router ID

The maximum IP address of the router's physical interface will become the Router ID

The minimum IP address of the router's physical interface will become the Router ID

214. What is the protocol number corresponding to the OSPF protocol at the network layer?

215. The broadcast address is a special address in which all the host bits in the network address are set to 1, and it can also be used as a host address.

True

False

216. During campus network planning, VLANs can be planned according to business types.

True

False

217. Which message does the OSPF protocol use to confirm the received LSU message?

LSU

LSACK

LSR

LSA

218. Telnetlib is a template that comes with Python to implement the Telnet protocol.

True

False

219. Which of the following configuration commands is correct?

<Huawei> system-view

[Huawei] command-privilege level 3 view user save

Modify the authority level of the user view command to 3, and save the configuration

Modify the user's permission level to 3, and save the configuration

Modify the permission level of the save command used by a certain user to 3

Modify the permission level of the save command in the user view to 3

220. The ports of Trunk type and Hybrid type are processed in the same way when receiving data frames.

True

False

Page 23 of 27

221. Which of the following advantages does stacking and clustering technology have? (Multiple choice)

Number of expansion ports

Simplify device management, just manage a logical device

Link aggregation across physical devices can be deployed

Effectively avoid single point of failure

222. By default, the port cost (Port Cost) calculated by STP has a certain relationship with the port bandwidth, that is, the larger the bandwidth, the cost will be?

Consistent

small

big

not necessarily

223. The network is shown in the figure below, and the switch configuration information is shown in the figure. Which of the following statements is correct? (Multiple choice)

Data frames on both links do not include VLAN TAG

Host A and host B can ping through

Host A and Host B cannot be pinged

The PVID of port GigabitEthernet0/0/1 on the switch is 20

224. Which of the following statements about one-arm routing is correct? (Multiple choice)

One physical connection per VLAN

Subinterfaces need to be created on the router

On the switch, configure the port connected to the router as a Trunk port, and allow frames of the relevant VLAN to pass through

Only one physical link is used between the switch and the router

225. The two switches shown in the figure below have both enabled the STP protocol, which port will eventually be in the Blocking state?

G0/0/3 port of SWA

G0/0/2 port of SWA

G0/0/2 port of SWB

G0/0/3 port of SWB

226. Neither the Alternate port nor the Backup port in RSTP can forward user traffic, nor can it receive, process, or send BPDUs.

True

False

227. The switch is connected to the host, and the commonly used port link type of the switch is?

Hybrid link

Trunk link

Access link

Trunk link

228. What are the characteristics of dividing VLANs based on ports?

Add a BLAN tag to the data frame according to the IP address carried in the message

Host relocation does not require VLAN reconfiguration

The location of the host needs to reconfigure the VLAN

Assign VLAN ID according to the protocol type and encapsulation format of the data frame

229. The port of the device running the STP protocol is in the Forwarding state. Which of the following statements is correct?

This port only receives and processes BPDUs, and does not forward user traffic

This port not only does not process BPDU packets, but also does not forward user traffic

This port not only forwards user traffic but also processes BPDU packets

The port will build a MAC address table based on received user traffic, but will not forward user traffic

230. When the switch receives a unicast data frame, it will look up the destination MAC address in the MAC table. Which of the following statements is wrong?

If the MAC address is found, and the port corresponding to the MAC address in the MAC address table is the port through which the frame enters the switch, the switch will discard the frame.

If the WAC address cannot be found, the switch performs a flooding operation.

If the MAC address is found, and the port corresponding to the MAC address in the MAC address table is not the port where the frame enters the switching machine, the switch performs the forwarding operation.

If the MAC address cannot be found, the switch will discard it.

Page 24 of 27

231. In the network shown in the figure, which of the following configurations can enable host A to access the Internet, but host B cannot? (Multiple choice)

acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny source 100.0.12.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit source 100.0.13.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

232. Config mode is the default ACL matching sequence on Huawei devices.

True

False

233. What is the number range of the basic ACL?

4000~4999

6000~6031

3000-3999

2000-2999

234. What is the default ACL step size on AR G3 series routers?

235. In the network shown in the figure below, host A logs in to router A through Telnet, and then obtains the configuration file of router B through FTP on the remote interface. How many TCP connections exist in router A at this time?

236. When a Windows host starts for the first time, if DHCP is used to obtain an IP address, what is the source IP address of the first packet sent by this host?

255.255.255.255

0.0.0.0

127.0.0.1

169.254.2.33

237. At what ratio does the DHCP client send the lease renewal message for the first time when the lease period reaches?

0.25

0.5

0.875

238. What is used to identify wireless networks in WLAN and distinguish different wireless networks?

AP Name

SSID

VAP

BSSID

239. When we search for an accessible wireless network on a laptop, what is the actual network name displayed?

BSS

BSSID

ESS

SSID

240. Which of the following descriptions about static and dynamic routing is wrong?

Dynamic routing protocols take up more system resources than static routing

After a link failure occurs, static routing can automatically complete network convergence

Static routing is easy to configure and easy to manage when it is applied in the enterprise

After the administrator deploys the dynamic routing protocol in the enterprise network, later maintenance and expansion can be more convenient

Page 25 of 27

241. As shown in the figure, regarding the topology and configuration of OSPF, which of the following statements is correct?

R1 and R2 can establish a stable OSPF neighbor relationship

Compared with R1 and R2, R2 has a higher chance to become the DR because its interface DR priority value is smaller

As long as the interface network type of R1 is restored to the default broadcast type, R1 and R2 can establish a stable neighbor relationship

As long as the interface network type of R1 is restored to the default broadcast type, and the hello time is adjusted to 10s, R1 and R2 can establish a stable neighbor relationship

242. The routing table output information of router R1 is shown in the figure, which of the following statements is correct? (Multiple choice)

Packets whose destination network is 12.0.0.0/8 will be forwarded from Ethernet0/0/0 interface of the router

The router discards packets with the destination network 11.0.0.0/8

The router will forward packets with the destination network 12.0.0.0/8

Packets whose destination network is 11.0.0.0/8 will be forwarded from GigabitEthernet0/0/0 interface of the router

243. The subnet mask of a network segment 150.25.0.0 is 255.255.224.0, then () is a valid host address in this network segment? (Multiple choice)

150.15.3.30

150.25.0.0

150.25.2.24

150.25.1.255

244. Which of the following features does the OSPF protocol have? (Multiple choice)

Division of Support Regions

Prone to routing loops

Calculate the shortest path by hops

Trigger update

245. On Huawei routers, the value of the static routing protocol priority by default is?

120

100

60 _

246. Which of the following descriptions about OSPF DD packets and LSAs is correct? (Multiple choice)

The detailed information of the LSA is included in the DD message

The LSA header is only a small part of the LSA

The header of the LSA can uniquely identify an LSA

The DD packet contains only the header information of the LSA

247. Which of the following IPv4 addresses are Class A addresses? (Multiple choice)

100.1.1.1

172.16.1.1

192.168.1.1

127.0.0.1

248. Which of the following descriptions about OSPF's Router ID is wrong? (Multiple choice)

The prerequisite for the normal operation of the OSPF protocol is that the router has a Router ID

The Router ID must be the same in the same area, and the Router ID in different areas can be different

Router ID must be the IP address of an interface on the router

The Router ID must be specified by manual configuration

249. Which statement about the TTL field in the IPv4 header is correct? (Multiple choice)

TTL value length is 80bit

Every time a packet passes through a Layer 3 device, the TTL value is reduced by 1

When there is a loop in the route, the TTL value can be used to prevent the data packet from being forwarded infinitely

The range of TTL value is 0-255

250. In which state does the OSPF protocol confirm the master-slave relationship of the DD message?

2-way

Exchange

Full

ExStart

Page 26 of 27

251. As shown in the figure, two switches use the default parameters to run STP root primary, switch B uses the configuration command STP priority 0, which of the following ports will be blocked?

G0/0/3 of HUB

G0/0/2 of switch A

G0/0/1 of switch A

G0/0/1 of switch B

252. As shown in the figure, after OSPF is configured on the two routers, the administrator configures the <silent-interface s0/0/0> command on the RTA, so which of the following descriptions is correct? (Multiple choice)

RTA will continue to receive and analyze OSPF packets sent by RTB

The neighbor relationship between the two routers will be down

The neighbor relationship between the two routers will not be affected

RTA will no longer send OSPF packets

253. At which layer of the OSI reference model does the Ethernet switch work?

Data link layer

Transport layer

Physical layer

Network layer

254. By default, the root path cost of the root bridge in the STP protocol must be.

True

False

255. As shown in the figure below, all hosts can communicate normally, so which is the correct relationship between SWA MAC address and port?

MAC-A G0/0/1 MAC-B G0/0/2 MAC-C G0/0/1

MAC-A G0/0/2 MAC-B G0/0/2 MAC-C G0/0/3

MAC-A G0/0/1 MAC-B G0/0/1 MAC-C G0/0/3

MAC-A G0/0/1 MAC-B G0/0/2 MAC-C G0/0/3

256. Which of the following statements about link aggregation in LACP mode is correct?

There can only be a maximum of 4 active ports in LACP mode

The number of active ports cannot be set in LACP mode

In LACP mode, all active interfaces participate in data forwarding and share load traffic

In LACP mode, devices at both ends of the link send LACP packets to each other

257. The configuration information of a certain port of the switch is shown in the figure, which of the following statements is wrong?

#

interface GigabitEthernet0/0/2

port hybrid pvid vlan 100

port hybrid tagged vlan 100

port hybrid untagged vlan 200.

#

The port type is Hybrid

If the VLAN TAG carried by the data frame is 200, the switch strips the VLAN TAG and sends

If the port receives a data frame without VLAN TAG, the switch needs to add VLAN TAG 100

If the VLAN TAG carried by the data frame is 100, the switch strips the VLAN TAG and sends

258. By default, how many seconds is the Forward Delay time of the STP protocol ?

259. Which of the following protocols is OSPF based on?

HTTP

UDP

TCP

260. In order to ensure that the same data flow is forwarded on the same physical link, which method of load sharing does Eth-Trunk use?

Flow-based load balancing

Packet-Based Load Balancing

Load sharing based on application layer information

Load sharing based on the incoming interface of data packets

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261. The MAC address table of a certain switch is shown in the figure. If the switch receives a data frame with the destination MAC address 5489-9811-0b49 from the Eth0/0/2 port, which of the following statements is correct?

Forward this data frame from Eth0/0/2 port

Discard this data frame

Forward this data frame from Eth0/0/3 port

Flood the data frame out

262. RSTP configures the value of the Type field in the BPDU message?

0x03

0x01

0x00

0x02

263. In which view can the administrator modify the device name for the router?

Protocol-view

User-view

System-view

Interface-view

HCIA-Datacom H12-811_V1.0 Exam Free Dumps

HCIA-Datacom H12-811_V1.0 Exam Free Dumps

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