Huawei H12-311_V3.0 Exam Practice Test Instant Access

Question 1

dBm is a unit for measuring signal strength, and this can be converted into a value in mW. Which of the following unit conversions are true?

A3 dBm = 2 mW

B10 dBm = 20 mW

C0 dBm = 1 mW

D3 dBm = 3 mW

Answer : C

Question 2

Which of the following statements about antenna gain are true?

AWhen selecting the antenna gain, ensure that the beam matches the coverage area. If the coverage distance is small, select low-gain antennas with wide vertical lobes to ensure the coverage effect in the area near the antenna.

BAn antenna's gain quantitatively measures the degree of input power an antenna can radiate in a given direction.

CAn antenna's gain measures its ability to transmit and receive signals in a specific direction. It is irrelevant to the antenna model.

DAntennas are passive components, and they do not amplify electromagnetic signals.

Answer : A, B, D

Question 3

What is the initialization state of an AP before the AP establishes a link with an AC for the first time?

Anormal

Binitial

Cconnecting

Didle

Answer : D

Question 4

Which of the following commands can be used to clear counter statistics?

Aclear

Benable statistics

Crestart statistics

Dreset

Answer : D

Question 5

If an SSID is incorrectly configured, STAs may not discover the target Wi-Fi. How do I modify the SSID to enable STAs to discover the target Wi-Fi?

AModify the WDS profile.

BModify the RRM profile.

CModify the SSID profile.

DModify the VAP profile.

Answer : C

Question 6

Which of the following statements about WLAN roaming are false?

AAPs with which a STA is associated before and after roaming can work on different channels.

BDuring roaming, the STA sends an Association Request frame containing home AP information to the foreign AP.

CAPs with which a STA is associated before and after roaming must work on the same channel.

DDuring roaming, the STA sends a Reassociation Request frame containing home AP information to the foreign AP.

Answer : B, C

Question 7

Which of the following types of frames does a STA send to obtain surrounding wireless network information during active scanning?

AAssociation Request frame

BBeacon frame

CAuthentication Request frame

DProbe Request frame

Answer : D

Huawei H12-311_V3.0 HCIA-WLAN V3.0 Exam Practice Test