Huawei H12-351_V1.0 HCIE-WLAN (Written) V1.0 Exam Practice Test

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Total 60 questions
Question 1

In a VRRP HSB scenario, if the VRRP preemption delay is set to a small value, which of the following problems may occur after a master/backup switchover? (Select All that apply)



Answer : B, C

According to the Huawei documents and resources, the VRRP preemption delay is the time that an AC waits before preempting another AC with a lower priority. If the VRRP preemption delay is set to a small value, the following problems may occur after a master/backup switchover:

b) A master/backup switchback is triggered too quickly. If the master AC recovers soon after a switchover, it may preempt the backup AC again and become the master AC.This may cause frequent switchovers and affect network stability1.

c) Backup information is incomplete. If the backup AC takes over services from the master AC too quickly, it may not have received all the data synchronized from the master AC through HSB.This may cause service interruption or data loss2.

Therefore, B and C are the correct answers. Reference:1: https://support.huawei.com/enterprise/en/doc/EDOC1100064368/80fc2ebd/example-for-configuring-vrrp-hsb2: https://support.huawei.com/enterprise/en/doc/EDOC1100096325/1a753937/vrrp-hsb-configuration


Question 2

Which of the following configurations may cause ST As to experience a slow Internet connection? (Select All that Apply)



Answer : A, C, D

B is false because disabling radio 1 of APs does not affect the Internet connection speed of STAs that use radio 2.


Question 3

Which of the following types of non-Wi-R devices can be identified by Huawei APs? (Select All that Apply)



Answer : A, B, D

Huawei APs can identify non-Wi-Fi devices that operate in the 2.4 GHz frequency band, such as Bluetooth devices, ZigBee devices, game controllers, wireless video and audio transmitters, microwave ovens, cordless phones, and baby monitors.


Question 4

When calculating the number of APs, you can divide the total required bandwidth by the maximum bandwidth of a single AP.



Answer : B

When calculating the number of APs, you cannot simply divide the total required bandwidth by the maximum bandwidth of a single AP. You also need to consider other factors such as signal coverage area, user density, interference level, and application type.


Question 5

Either of the two APs that have established a mesh connection can send a Mesh Peering Close frame to the other AP to tear down the

mesh connection.



Answer : A

A mesh connection can be torn down by either of the two APs that have established it by sending a Mesh Peering Close frame to the other AP. This frame indicates that the sender no longer wants to maintain the mesh connection.


Question 6

To which of the following scenarios is radio calibration applicable?



Answer : C

Radio calibration is applicable to high-density scenarios where a large number of users access the network simultaneously and require high bandwidth, such as stadiums, exhibition halls, and conference centers. Radio calibration can improve user experience by increasing the frequency bandwidth for high-load APs.


Question 7

As shown in the figure, STA_1 through STA_4 are associated with AP_1, and STA_5 is associated with AP_2. Assuming that the load balancing threshold is 2, the load difference threshold is 25%, and API and AP2 support a maximum of 10 STAs, which of the following statements are true? (Select All that Apply)



Answer : A, B

The load percentage of an AP is calculated by dividing the number of associated STAs by the maximum number of STAs supported by the AP. In this case, the load percentage of AP_1 is 4/10 = 40%, and that of AP_2 is 1/10 = 10%. The load balancing mechanism needs to be enabled to balance the load between AP_1 and AP_2. Then some STAs are steered from AP_1 to AP_2 based on the load balancing threshold and the load difference threshold.


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Total 60 questions