HCIP-WLAN-CEWA V1.0 H12-321 Exam Study Guides

dumps2021-11-29T07:15:52+08:00

HCIP-WLAN certification is much hot among those Huawei candidates. HCIP-WLAN-CEWA V1.0 H12-321 exam is the related test to earn the certification. There are 60 questions in real Huawei H12-321 exam, and you have 90 mins to complete all the questions. The exam format is Single-answer Qusetion, Multiple-answer Question, True or false. We provide the latest HCIP-WLAN-CEWA H12-321 exam study guides, which are valid in your preparation. Free Huawei H12-321 exam study guides are available below.

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1. Taking 5GHz as an example, if the distance between the transmitting and receiving antennas is 5km, the radius of the Fresnel area is roughly?

3.6m

5.6m

9.7m

2. Which of the following descriptions of the second Fresnel zone is correct? (Multiple choice)

If the RF signal and the main signal are at the same frequency but out of phase and the two intersect, the out-of-phase signal will weaken or even cancel the main signal. Since reflection is one of the factors that cause the out-of-phase signal to interfere with the main signal, it is necessary to evaluate the point-to-point communication chain When routing, the influence of the second Fresnel zone on the signal must be considered

If the signal of the second Fresnel zone is reflected to the receiving end due to antenna height and terrain, the link quality may be reduced as a result

The influence of the second Fresnel zone should still be taken into account when planning the network or troubleshooting, especially in flat and arid environments (such as deserts).

The first Fresnel zone surrounds the second Fresnel zone

3. Which statement about N+1 backup is correct?

The model and software version of the active and standby ACs must be exactly the same

The main and standby AC product forms can be different, only need to ensure that the AC software version is consistent

One backup AC can provide backup services for multiple main ACs, reducing the cost of purchasing equipment, and the reliability is higher than VRRP hot backup

N+1 backup is cold backup. AP information and STA information are backed up

4. In smart roaming, for a terminal that supports 802.11k, when the current associated AP detects that it is a sticky terminal, it will actively trigger this terminal to perform neighbor measurement based on the 802.11k mechanism.

Regarding this measurement, which of the following information will the terminal mainly collect? (Multiple choice)

AP's BSSID

Signal strength

AP model

The channel where the AP is located

5. Which of the following are the authorized elements of the Agile Controller? (Multiple choice)

SSID

Time

Device name

IP address

6. In terms of roaming process, which of the following processes need to go through when roaming? (Multiple choice)

Roaming measurement

Roaming identification

Roaming judgment

Roaming execution

7. In the N+1 backup network as shown in the figure, AC3 is the backup AC of AC1 and AC2, the number of APs that are online on the main AC1 is 1024, the number of configured APs is 2048, and the number of APs that are online on the main AC2 is 512. Normally, what is the minimum number of APs allowed to access on AC3, and what is the minimum number of APs allowed to be configured on AC3?

2048, 1024

1024, 2048

3072, 512

1024, 2560

8. In the WLAN network environment, the equipment is classified according to the security category. Which types can it be divided into? (Multiple choice)

Legal equipment

Illegal equipment

Testing equipment

Interfering equipment

9. According to the detection results reported by the AP, the AC can obtain the neighbor relationship between the AP and the surrounding devices, as well as the neighbor relationship of all radio frequency devices under the entire AC including legal APs, illegal APs, and non-Wi-Fi interfering devices, as shown in the following figure:

In order to prevent the reported data from being too large, only the legal neighbors with signal strength greater than -85dBm and illegal neighbors with signal strength greater than () dBm are reported here.

-75

-80

-85

-90

10. As shown in the figure, which AP and STA in the figure cannot perform normal data communication? (Multiple choice)

AP1 and STA1

AP1 and STA2

AP2 and STA1

AP2 and STA2

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11. An engineer cannot establish a connection with the AD server during the configuration of the Agile Controller. The engineer verified that the IP address of the AD directory server and the synchronization account and password are correct. At the same time, there is no additional configuration for the AD directory server. The specific configuration is as shown in the figure below. As shown, what is the cause of this problem? (Multiple Choice)

Wrong synchronization type

Authentication source name is wrong

Port error

Base DN error

SSL is not enabled

12. In dual-link cold networking, which of the following statements is correct? (Multiple choice)

AP only establishes CAPWAP tunnel with AC

The AP establishes a CAPWAP tunnel with the active and standby ACs

Periodically exchange CAPWAP messages between the AP and the active and standby ACs to check the link status

The AP only periodically exchanges CAPWAP messages with the main AC to check the link status

13. In the WLAN network environment with WIDS enabled, the MAC addresses of AP devices detected include:

01-01-22-22-33-33

02-01-01-22-33-33

02-01-01-22-33-34

02-01-22-01-01-22

The configured oui whitelist is 01-01-22; which of the above are illegal APs? (Multiple choice)

01-01-22-22-33-33

02-01-01-22-33-33

02-01-01-22-33-34

02-01-22-01-01-22

14. When the air interface frame is a data frame, the DS value needs to be compared. When the values of To DS and From DS are respectively, the device type is AP?

0, 0

0, 1

1, 0

15. When the user uses the WPA2-802.1x security policy and the STA supports fast roaming technology, the user does not need to re-complete the 802.1x authentication process during the roaming process, but only needs to complete the key negotiation process.

True

False

16. Which of the following does not belong to the purpose of WLAN equipment upgrade?

Fix existing problems

Optimize the performance of the equipment

Get new features and functions

Extend the service life of the equipment

17. Regarding the description of configuring a roaming group, which of the following statements is wrong?

After the AC responsible for the Master Controller enables the Master Controller function, it joins the roaming group by default and can manage other ACs

Master Controller is issued to each managed AC through CAPWAP signaling

Master Controller is a logical role, which can be assumed by any common entity AC

Each AC needs to designate an AC as its own Master Controller

18. Which of the following commands can be used to check whether the AP channel and transmit power are enabled with the automatic selection function?

[AC-wlan-view] display station ssid wlan-net

[AC-wlan-view] display rrm-profile name profile-name

[AC-wlan-view] display radio all

[AC-wlan-view] display yap-profile name profile-name

19. 4G frequency band; otherwise, the terminal is considered to be a dual-band terminal. This logic also applies to 5G radio.

TRUE

FALSE

20. In a WLAN network that uses the Agile Controller as the admission controller, which of the following options is not the cause of the 802.1x authentication failure?

The key used by the Agile Controller to access the device is inconsistent with the key configured on the device

The billing cycle is not configured

Port 1813 on the server is occupied

The authorization rule matching is to deny access

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21. If roaming between two APs is realized, which of the following conditions must be met? (Multiple choice)

Same security policy

Same SSID

The same data forwarding mode

Same business VLAN

22. In the channel switching service non-interruption feature, the mechanism for notifying the terminal to switch channels is defined by the 802.11h protocol.

TRUE

FALSE

23. What are the advantages of a WLAN Mesh network compared to a traditional wireless local area network? (Multiple choice)

Limitations of coverage are broken

Reduce reliance on wired networks

Stronger wireless signal

AP or AC that supports Mesh devices is more powerful

24. As shown in the figure, with regard to the dual-system hot backup solution, which of the following statements is correct? (Multiple choice)

Picture a is the active and standby mode

Picture b is the active and standby mode

Picture a shows the load sharing mode

Picture b shows the load sharing mode

25. As shown in the figure, regarding N+1 backup networking, which of the following descriptions is correct? (Multiple choice)

The standby AC3 must be in the same Layer 2 network as the main AC1 and the main AC2

All APs under the main AC1 and main AC2 must be configured on the standby AC3 to ensure that the AP can obtain the correct configuration after the AC is switched

Configure the AP's corresponding priority on each active and standby A

The AP can select the corresponding main AC according to the priority carried by the AC

The corresponding MAC whitelist can be configured on the main AC to ensure that the AP can go online on the corresponding AC to assist the AP in selecting the correct main AC

26. Which of the following descriptions about Portal authentication is correct? (Multiple choice)

The authentication-free rule template takes effect for Portal authentication users and 802.1x authentication users

The free rule needs to be configured to allow the client to access the Web server and DNS server

When a user who has not passed authentication goes online, the access device will redirect the user to the Portal authentication website and start the Portal authentication process

There is an authentication process between the web server and the access device to ensure that both parties are legal devices

27. Which of the following descriptions about Huawei's spectrum navigation features is correct? (Multiple choice)

In Huawei's spectrum navigation features, whether 2.4G priority access or 5G priority access is considered

First determine whether the number of AP access users exceeds the starting threshold of dual-frequency load balancing. If not, the STA can access the 5G radio first.

If the starting threshold of load balancing between dual frequencies is exceeded, the AP will calculate according to the formula (number of users connected by 5G radio frequency-number of users connected by 2.4G radio frequency)/number of users connected by 5G radio frequency * 100% Compare the load difference between the two radios with the difference threshold of load balancing between the two frequencies to determine which frequency band the STA is allowed to access

When the number of AP access users reaches the starting threshold of load balancing between dual frequencies, if (number of users connected by 5G radio frequency-number of users connected by 2.4G radio frequency/number of users connected by 5G radio frequency * 100% > gap-threshold, the user is given priority to go online on 5G radio

28. Global tuning, AC runs () and () algorithms based on neighbor relationship, interference and load information to generate new AP transmit power and working channel, and then send it to AP for use.

EDCA

DCA

CAC

TPC

29. Which one of the following four scenarios does not belong to the Mesh network?

(a)

(b)

(c)

(d)

30. Only four channels 1, 5, 9, and 13 can be used in a WLAN network. After channel is adjusted, as shown in the figure, which of the following is correct? (Multiple choice)

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31. During dual-link hot backup, the engineer enables the dual-link backup function, but does not modify the heartbeat interval and the number of times. Then by default, how long does the AP detect the timeout of the main link and perform the main-standby switchover?

25 seconds

50 seconds

75 seconds

150 seconds

32. Which of the following descriptions of the Fresnel zone is correct?

The narrower the beam width, the larger the Fresnel area

The narrower the beam width, the smaller the Fresnel area

The Fresnel zone has nothing to do with the beam width

Other options are incorrect

33. There are three backup technologies for WLAN high reliability. Please match each backup technology with the corresponding description. (Connection diagram)

34. 1.When the air interface frame is a management frame, how many bits are the ESS and IBSS in the Capability Info field of the management frame that can determine the device is a wireless bridge?

35. When using Agile Controller to synchronize data, an engineer found that some user information could not be synchronized. The user names that could not be synchronized are as follows: Jack=boss, Mike=leader, Mary=manager, Ann=girlfriend.

The engineer found that these user names and the user group or OU they belong to do not have the same name. Which of the following is the cause of the above problem?

Username is too long

Username is too short

Illegal characters in user name

The user’s name needs to be composed of numbers and English

36. A company needs to build a large VLAN three-layer network in its office building. There are a large number of employees in the office building, and the employees will pick up the WLAN network at the entrance of the office building and roam to their respective work areas. The company has deployed a wired network and has a mature wired network management mechanism. It is hoped that the newly deployed WLAN network can be managed and maintained in a unified manner with the original wired network. The IP address of the AC has been planned to be 172.168.11.1. The network engineer is planning the WLAN When networking, which of the following is correct? (Multiple choice)

In order to facilitate the unified management of wired and wireless networks, a modular switch + ACU2 networking architecture can be adopted to configure wired and wireless integration

Due to the large number of employees and access to the WLAN network at the entrance of the office building, VLAN Pool can be configured to solve the problem of a large number of IP address requests in a specific area

In a large-scale WLAM network, many APs are managed under the A

In order to facilitate unified management and maintenance, all APs connected to the AC are added to the same AP group for maintenance

In a Layer 3 WLAN network, the Option 43 field needs to be configured on the Windows 2003 DHCP Server as 030B3137322E3136382E31312E31

37. Compared with 802.1X authentication, what are the advantages of Portal authentication? (Multiple choice)

Portal can be used for dumb terminal access scenarios

Portal authentication is more suitable for temporary visitors to the network

Portal authentication does not require the installation of client software

Portal authentication is compatible with MAC bypass authentication

38. Regarding the benefits of package-by-package power adjustment, which of the following statements is correct? (Multiple choice)

Turn on packet-by-packet power adjustment to help avoid mutual interference between APs

Turn on packet-by-packet power adjustment, which helps to save AP's energy consumption

Turn on packet-by-packet power adjustment, which helps to ensure the success rate of sending packets to terminals far away from the AP and improve air interface performance

Turn on packet-by-packet power adjustment, which can more effectively improve user access security

39. Which of the following descriptions about chain networking in Mesh networking is wrong?

In a chain networking environment, users can pre-designate neighbors connected to it

In a chain networking environment, users cannot pre-designate neighbors connected to it

The link formed between MPs can convert 802.3 packets into 802.11s packets, and then transmit them on the wireless link

In a chain networking environment, a single point of failure may occur

40. A large enterprise deploys a WLAN network, and some of the SSIDs use the direct forwarding method. Which of the following descriptions about the characteristics of the direct forwarding method is correct? (Multiple choice)

Business data does not need to be moved back to the AC, and there is no forwarding bottleneck

Convenient for centralized policy control of wireless traffic, and has obvious advantages in user policy control, wireless roaming, etc.

Better security when data packets are forwarded

AC expansion is simple, just increase the number of independent ACs

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41. The port number of the control message of the CAPWAP tunnel protocol is ().

1645

1646

5246

5247

42. In the network as shown in the figure below, the data traffic is forwarded as STA-HAP-HAC-upper network before roaming, and the forwarding method is direct forwarding, and the home agent is configured on the AC. After three-layer roaming, what is the direction of data forwarding traffic?

STA-FAP-FAC-Upper Network

STA-FAP-FAC-HAC-FAC-Upper Network

STA-FAP-FAC-HAC-Upper Network

STA-FAP-FAC-HAC-HAP-HAC-upper network

43. The following description of the omnidirectional antenna, which is wrong?

The omnidirectional antenna distributes the signal evenly in a 360-degree omnidirectional area around the center point

The lobe width of the omnidirectional antenna is horizontally 360 degrees

The omnidirectional antenna has strong energy gathering ability and good signal directionality

The lobe width of the omnidirectional antenna is vertical 360 degrees

44. Which of the following servers is a directory server?

Radius server

AD server

DNS server

Portal server

45. In the WLAN outdoor long-distance point-to-point communication, if a stable communication link is to be maintained, what percentage of the first Fresnel area generally cannot be blocked?

0.2

0.4

0.5

0.6

46. Regarding enabling the HSB backup group, if the AP is already online on the main AC, and then the AP information is added offline on the standby AC, the AP status on the standby AC will display fault. In this case, you need to execute the undo hsb enable command in the HSB backup group view of the standby AC to enable the HSB active/standby backup function, and then execute the hsb enable command to enable the HSB active/standby backup function, and then back up the information on the active AC again. The backup information of the active and standby is consistent, and the AP status on the standby AC will be displayed as standby at this time.

True

False

47. In the Mesh network, if the MP is connected to the wired network, it is necessary to ensure that the MP and MPP cannot communicate with each other through the wired network. Otherwise, the MPP and MP can communicate with each other through the Mesh link and the wired link. Mesh and wired The link will form a loop between MPP and MP.

True

False

48. Configure the country code

4 → 1 → 3 → 7 → 2 → 6 → 5

7 → 1 → 3 → 4 → 2 → 6 → 5

7 → 4 → 3 → 1 → 2 → 6 → 5

4 → 3 → 1 → 7 → 2 → 6 → 5

49. What information can the Agile Controller send to NAS devices for permission control? (Multiple choice)

VLAN

ACL

Static ARP binding relationship

Static routing

Some specific RADIUSM properties

50. Which of the following descriptions of Mesh security templates are correct? (Multiple choice)

The security template used by APs in the same Mesh network should be the same

The security template bound to the Mesh template must be configured as WPA2+PSK+AES

The security template bound to the Mesh template must be configured as WPA2+PSK+TKIP

The security template bound to the Mesh template must be configured as WAPI+PSK+CCMP

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51. 20dBm is equivalent to ()mW.

52. When a user is online, it is convenient to find which AC the user is currently online, so as to obtain user data. In order to quickly know which AC a user is currently online, each AC needs to save the online status of all ACs in the roaming group and all users.

True

False

53. If the terminal supports both 5GHz and 2.4GHz functions, the AP can be configured to control this terminal to preferentially access 5GHz.

True

False

54. Which of the following descriptions about the backhaul VAP is wrong?

Complete MP neighbor discovery

Complete the MESH connection establishment and data return function

Realize the establishment of routing topology between nodes by forwarding routing management messages in the return link

Each radio can create multiple backhaul VAPs

55. During the roaming process, which packets may be improperly processed that may cause tunnel convergence problems? (Multiple choice)

Unknown unicast

Broadcast

Multicast

56. Through smart roaming, make sure that each terminal is associated with the AP closest to itself, achieve load balancing among AP.

TRUE

FALSE

57. Taking 5GHz as an example, if the transmitting and receiving antennas are 1km apart, what is the approximate radius of the Fresnel area?

2.4m

3.6m

5.6m

6.2m

58. The antenna is different from the signal amplifier. It is a passive device that does not require power supply, but only guides and shapes the wireless signal.

True

False

59. Among the following options, () is a prerequisite for enabling Huawei's load balancing function.

APs are of the same type

APs are under the same AC management, and there is overlap in signals between APs

STA can scan to APs that perform load balancing with each other

The output power settings of the AP are consistent

60. In the channel switching service uninterrupted feature, the AP and the terminal agree on the time to switch the channel synchronously, using the beacon frame as the time point, and the two parties agree to switch the channel synchronously after a certain time node of the beacon frame.

TRUE

FALSE

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61. Which of the following is correct about the Fresnel radius formula and the earth curvature formula? (Multiple choice)

62. General antennas are reversible, that is, the same antenna can be used as a transmitting antenna or a receiving antenna. The basic characteristic parameters of the same antenna as transmitting or receiving are the same.

TRUE

FALSE

63. Regarding the parameter DN in the directory server, which of the following descriptions is correct?

Every directory server has the DN parameter

The DN parameter is only available in the LDAP server

DN is a parameter that needs to be manually configured by the directory server administrator

The DN parameter is only available in the AD server

64. When the coverage area of 2.4GHz band 1 channel interference is more and serious, adjusting the equipment to 3 channels can effectively reduce the interference.

True

False

65. Which of the following measures will help guide wireless terminals to preferentially associate with 5G frequency bands? (Multiple choice)

The transmit power configured on the 5G radio is 3-8dB higher than 2.4G

For the terminal to send a probe request to probe the AP, the AP responds first to the probe on 5G, and then responds to the probe on 2.4G after several responses on 5

If the terminal initiates an association to the 2.4G radio frequency, the AP rejects the association, and the association is allowed only after the number of rejections reaches a certain threshold. For the association on the 5G radio frequency, the AP immediately allows the association

Configure the beacon rate on 5G to be higher than the 2.4G radio, the beacon period to be greater than the 2.4G radio, and the number of probe retransmissions to be less than the 2.4G radio

66. There are two algorithms for VLAM allocation in VLAN Pool: sequential algorithm and Hash algorithm. Which of the following are the characteristics of Hash algorithm? (Multiple Choice)

Users can be assigned to the same VLAN when they go online multiple times, and the IP is usually unchanged

The number of users in each VLAN is divided evenly

The number of users in each VLAN is unbalanced

When the user goes online again, the VLAN is prone to change, and the IP will also change

67. Which of the following statements about the global tuning algorithm is correct? (Multiple choice)

The core of the dynamic channel adjustment algorithm is the iterative exhaustive algorithm, which iterates all possible "AP-channel" combinations, and finally selects a set of optimal combinations

The goal of the TPC algorithm is to select a suitable transmit power to meet the coverage requirements of the AP

The minimum interference threshold means that the intensity of interference to neighbors is very low and the interference is acceptable. Two APs do not perceive each other and can send messages at the same time.

If the neighbor's interference is less than the minimum interference threshold, decide whether to reduce the transmit power according to the difference between the two

68. Regarding the description of Layer 2 roaming and Layer 3 roaming, which of the following statements is correct? (Multiple choice)

The VLANs on the AP service set associated with the STA before and after Layer 3 roaming are different

If the STA is associated with the same VLAN ID before and after roaming, it must belong to Layer 2 roaming

Layer 2 roaming means that the client roams in the same subnet

Three-tier roaming means that the client roams between different subnets

69. In N+1 backup networking, the AP only establishes a CAPWAP link with the primary AC, and periodically sends Primary Discovery Request messages to the backup AC for detection, which consumes less resources on the AP compared to dual links.

TRUE

FALSE

70. In the N+1 backup network as shown in the figure, a total of 300 APs from AP1 to AP300 are online in AC1, and a total of 400 APs from AP301 to AP700 are online in AC2. AC3 can be used as a backup AC to configure 700 APs, but at most 500 APs can go online at the same time. Without changing the configuration, which of the following statement is wrong? (Multiple choice)

If AC1 fails, 300 APs from AP1 to AP300 will perform active/standby switchover and go online in AC3

If AC2 fails, 400 APs from AP301 to AP700 will perform active/standby switchover and go online in AC3

If AC1 and AC2 fail at the same time, only 500 APs from AP1 to AP500 can perform active/standby switchover and go online in AC3, and the remaining 200 APs cannot go online in AC3, and the services of these APs will be interrupted.

After the failure of AC1 or AC2 is restored, it is uncertain whether the active and standby APs will go online again in AC1 and AC2.

Page 8 of 10

71. Which of the following statements about reliability metrics are correct? (Multiple choice)

Generally, we use the two technical indicators of MTBF and MTTR to evaluate the reliability of the system

MTBF refers to the average time required for a system to recover from a failure, usually in hours. The more MTBF, the higher the reliability

MTTR refers to the average time required for a system to recover from a failure

The calculation formula of MTTR is: MTTR = failure detection time + hardware replacement time + system initialization time + link recovery time + routing coverage time + forwarding recovery time. The smaller the MTTR value, the higher the reliability

72. Regarding the usage scenarios and characteristics of various ACs, which of the following descriptions is correct? (Multiple choice)

Independent AC boards such as ACU2 are suitable for large-scale networks, and there will be expansion needs in the future, and the rack slot resources are tight.

Independent box AC such as AC6605 is suitable for the unified construction of wired and wireless networks, and unified management of wired and wireless users.

On-board AC such as X1E single board is suitable for scenarios where wired and wireless users are independently managed

On-board AC such as X1E single board, compared with independent AC such as AC6605, has higher forwarding performance, and can achieve device-level and link-level redundancy backup, so that the WLAN network has better reliability

73. In order to protect WLAN security, which of the following measures can be taken? (Multiple choice)

Identity verification

Encryption

System protection

Control flow

74. Regarding AD server and LDAP server, which of the following descriptions is wrong?

AD is a dedicated directory server for Windows Server

LDAP can be installed on Windows Server

The directory service protocol used by the AD server is the AD protocol

The directory service protocol used by the AD server is the LDAP protocol

75. As shown in the figure, in order to avoid the transparent transmission of STP packets and cause loops to affect each other, which of the following does not need to enable the STP spanning tree protocol?

Only the MPP wired side interface needs to enable the STP function

Only the MP3 wired side interface needs to enable the STP function

Both MPP and MP3 wired side interfaces need to enable STP function

MP1 and MP2 need to enable STP

76. When installing a long-distance point-to-point radio frequency communication link, if the distance between the transmitting and receiving antennas exceeds how many kilometers, the influence of the curvature of the earth needs to be considered?

3.3km

5.3km

7.3km

11.3km

77. Which of the following statements about enabling the HSB backup group is wrong?

The HSB backup group can be enabled directly in the global mode

Before the AP goes online on the active and standby AC, it needs to be added offline on both the active and standby A

If the APS goes online on the main AC and then adds AP information offline on the standby AC, the AP status on the standby AC will be displayed as fault

After the HSB backup group is enabled, the relevant configuration of the HSB backup group will take effect, and the HSB backup group will notify the corresponding business module for processing when the status changes.

78. In the N+1 backup network, AC3 is configured with global priority 5, AC1 and AC2 are configured with global priority 6, AC1 is configured with API personality priority 3, AC2 is configured with AP3 personality priority 3, AC1 and AC2, AC3 When there is no load, which AC device will be connected to AP1, AP2, AP3, AP4?

AP1 is connected to AC1, AP2 is connected to AC3, AP3 is connected to AC2, AP4 is connected to AC3

AP1 is connected to AC3, AP2 is connected to AC3, AP3 is connected to AC3, AP4 is connected to AC1 or AC2

AP1 is connected to AC1, AP2 is connected to AC1 or AC2, AP3 is connected to AC2, AP4 is connected to AC1 or AC2

AP1 is connected to AC3, AP2 is connected to AC1 or AC2, AP3 is connected to AC3, AP4 is connected to AC3

79. As shown in the figure, there are 4 online STAs (STA1-STA4) under AP1 radio frequency, and 1 online STA (STA5) under AP2 radio frequency. The load balancing start threshold 5 is exceeded, and the maximum number associated users supported by AP1 and AP2 radio frequencies is 10, and the configured load difference threshold is 10%.

When STA6 initiates a request to AP1 for the first time, which of the following statements is correct?

AP1 is first calculated according to the load balancing algorithm, and STA6 is allowed to access

AP1 is calculated according to the load difference threshold algorithm first, and STA6 is allowed to access

AP1 is first calculated according to the load balancing algorithm, and STA6 is denied access

AP1 is calculated based on the load difference threshold algorithm first, and STA6 is denied access

80. In the WLAN hot backup mechanism, what are the ways of data synchronization? (Multiple choice)

Batch backup

Real-time backup

Scheduled backup

Incremental backup

Page 9 of 10

81. In a WLAN network with WIDS enabled, which of the following statements is correct regarding the judgment of illegal devices? (Multiple choice)

So Ad-hoc devices will be directly judged as illegal devices

It is an illegal AP that the AC is not connected to the AP

It is an illegal STA to access the STA that is not the AC

It is not the AC accessing the STA, you also need to check whether the access to the AP is legal

82. In the same frequency Mesh network, the transmission bandwidth of two APs is about 200M. What is the average transmission bandwidth when adding one AP?

Up to 200M

Up to 150M

Up to 100M

Up to 50M

83. As shown in the figure, in the dual-link cold standby load sharing network, the configuration is shown in the figure. AC1 is configured with two SSIDs, Huawei and Guest, and AC2 is configured with a Huawei SSID. The configuration of the same SSID is the same, and AP1 is online. And AC1 and AP1 establish the main line first. When the link between AP1 and AC1 is disconnected and the active/standby switch is sent, what is the service status of the user accessed by the Guest SSID? (Multiple choice)

In the local forwarding mode, the service remains uninterrupted, and new users cannot access the Guest

In the local forwarding mode, the service remains uninterrupted, and new users can access the Guest

In the centralized forwarding mode, the service remains interrupted, and new users cannot access the Guest

In the centralized forwarding mode, the business remains uninterrupted, and new users cannot access the Guest

84. Which of the following is correct about the Fresnel radius formula and the earth curvature formula? (Multiple choice)

85. Which of the following statement about roaming in the same VLAN Pool correct?

Only layer 2 roaming

Only layer 3 roaming

Both layer 2 roaming and layer 3 roaming exist

Layer 3 roaming in direct forwarding mode

86. Regarding the precautions for configuring HSB main and backup services, which of the following statements is wrong?

If you want to modify, you need to delete the HSB active and standby services first, and then reconfigure

Only after enabling the dual-system hot backup function, the configured HSB active/standby backup channel parameters will take effect

After the configuration is complete, you can modify the HSB main and backup channel parameters

After the configuration is complete, you cannot directly modify the HSB main and backup channel parameters

87. Regarding the Agile Controller admission model, which of the following descriptions is correct? (Multiple choice)

In the access model, the core is authorization conditions and authorization results

Currently only 802.1x and Portal authentication can support all the conditions in the access model

The authorization element does not include the IP address range

Authorization conditions include authorization elements

88. Which of the following descriptions of Mesh roles is correct?

Mesh role is based on radio configuration

Mesh role is based on AP configuration

Mesh role based on VAP configuration

Mesh roles can be configured based on any granularity

89. WEP encryption data algorithm adopts () algorithm.

RC4

AES

CCMP

Asymmetric encryption

90. Which of the following is the correct configuration for referencing the AP system template and the MESH template? (Multiple choice)

[AC-wlan-view] ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp] wired-port-profile wired-port gigabitethernet 0

[AC-wlan-view] ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp] regulatory-domain-profile domain 1

[AC-wlan-view]ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp]mesh-profile mesh-net radio 1

[AC-wlan-view]ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp]ap-system-profile mesh-sys

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91. Which of the following commands can be used to create an RF tuning template?

[AC-wlan-view] rrm-profile name wlan-net

[AC-wlan-view] regulatory-domain-profile name domain1

[AC-wlan-view] wired-port-profile name wired-port

[AC-wlan-view] ap-system-profile name mesh-sys

92. Regarding the scenario where the Mesh network supports STP, which of the following statement is wrong?

When the wired port of the AP is not bound to an Eth-Trunk interface, the AC can deliver the STP configuration to the AP to take effect

In the Mesh network, the Mesh link only transparently transmits STP packets

If the AP enables the STP function, the AP will not transmit STP packets to the wireless side, but will only damage the wired side of the AP

Mesh network can support multi-loop breaking

93. As shown in the figure, it is part of the radio frequency tuning configuration process, regarding the configuration process of radio frequency tuning (connection diagram)

94. Both N+1 backup and dual-link cold backup support the link switchback function. To avoid frequent switching caused by network fluctuations, N+1 backup and dual-link cold backup are performed after waiting for 20 heartbeat cycles by default. Switch back operation between active and standby.

TRUE

FALSE

95. In a meshed MESH network, which of the following descriptions are correct about the MESH path? (Multiple choice)

There is only one MESH path

A wireless link cascaded by a series of MESH connections between the source MP and the destination MP

There may be multiple MESH paths

In the MESH path, the source AP can be MP or MPP

HCIP-WLAN-CEWA V1.0 H12-321 Exam Study Guides