Question 1

As shown in the figure, for the partial RF tuning configuration process, regarding the configuration process of RF tuning, what is the correct sorting?

Ab, a, d, c

Bb, d, a, c

Ca, d, b, c

Da, b, d, c

Answer : A

Question 2

What is wrong about the description of the first Fresnel zone below?

AThe first Fresnel zone will affect the integrity of RF communications even if it is partially blocked.

BThe Fresnel zone is blocked and the RF signal is diffracted or bent.

CSignal diffraction will cause the RF energy received by the antenna to decrease, and even lead to communication link interruption.

DIn any case, the proportion of the first Fresnel zone blocked by obstacles should not exceed 60%.

Answer : D

Question 3

In the channel switching service uninterrupted feature, the mechanism for announcing a terminal to switch channels is defined by the 802.11h protocol.

ACorrect

BFalse

Answer : A

Question 4

In the WLAN network with WIDS enabled, which of the following statements about device information is wrong?

ADevice information reporting, short-term reporting, also known as instant reporting cycle

BThe long period of device information reporting can be set, the minimum is 1 hour.

CShort-term reporting is full reporting

DThe default time for long-term reporting is 5 hours.

Answer : B, C, D

Question 5

The device receives an exception notification when the primary and backup service packets sent by the peer are not received within the time interval between the primary and secondary service packets and the number of retransmissions. Prepare to rebuild the primary and backup backup channels.

ACorrect

BFalse

Answer : A

Free Practice Questions for Huawei H12-321 Exam

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