Huawei Certified ICT Associate-Wireless Local Area Network (H12-311-ENU) Free Practice Test

Question 1

Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-band mode of operation (supporting two operating bands of 2.4 GHz and 5 GHz).

A. False

B. True

Correct Answer: B

Question 2

In the 802.11 frame, which address bit of the Address bit represents the address of the frame receiving end?

A. Address 3

B. Address 4

C. Address 2

D. Address 1

Correct Answer: D

Question 3

MIMO (Multiple input and multiple output), that is, multiple input and multiple output, wireless access points and clients using 802.11n technology can simultaneously transmit data using up to three spatial streams, and the theoretical rate can reach 600 Mbps.

A. False

B. True

Correct Answer: A

Question 4

Regarding the telnet management of the AC6605, the following statement is wrong.

A. telnet service can be configured separately on the wired side and the wireless side of the AC.

B. telnet is a way to remotely manage AC The

C. telnet can be authenticated based on username and password. The transmission is encrypted and therefore quite secure.

D. telnet service is disabled by default on the AC The

Correct Answer: C

Question 5

Which of the following devices are Huawei Wireless Dual Access AP (Access Point) (Select 2 Answers)?

A. AP6010SN

B. AP5010DN

C. AP6010DN

D. AP5010SN

Correct Answer: B,C

Question 6

The three APs deployed on the first floor have channels from left to right, 1, 6, and 11, respectively. The channels of the three APs deployed on the second floor should be divided into.

A. 6,11,1

B. 1,6,11

C. 2,7,12

D. 11,6,1

Correct Answer: A

Question 7

In the 802.11 frame, what is the correct correspondence between the Type and the frame format in the Frame Control bit?

A. Type is 00, it means reserved. When

B. Type is 00, it means management frame.

C. Type is 01, indicating that the data frame

D. Type is 10, indicating the control frame. When

Correct Answer: B

Question 8

TKIP encryption is more secure than WEP encryption because (Select 3 Answers).

A. Adopting a more complex encryption algorithm

B. Added a key distribution mechanism, no longer using a single key

C. Using a stronger data verification algorithm

D. Adopt a longer IV

Correct Answer: B,C,D

Question 9

Which modulation method does the following picture belong to?

A. modulation

B. phase modulation

C. amplitude modulation

D. frequency modulation

Correct Answer: D

Question 10

Which of the following two are PoE's power supply standards (Select 2 Answers)?

A. IEEE 802.3af

B. IEEE 802.3as

C. IEEE 802.3at

D. IEEE 802.3ae

Correct Answer: A,C

Question 11

The 802.11 protocol that defines the quality of service in WLAN is .

A. 802.11e

B. 802.11n

C. 802.11f

D. 802.11i

Correct Answer: A

Question 12

The following statement about antenna classification is correct (Select 2 Answers)?

A. Classification by working frequency band: communication antenna, TV antenna, radar antenna, etc.

B. Classification by use: short wave antenna, ultrashort wave antenna, microwave antenna, etc.

C. Classification by shape: wire antenna, planar antenna, etc.

D. Classification by direction: omnidirectional antenna, directional antenna, etc.

Correct Answer: C,D

Question 13

Which of the following wireless frames belong to the Control Frame (Select 3 Answers)?

A. PS-Poll

B. Beacon

C. CTS

D. RTS

Correct Answer: A,B,C

Question 14

For outdoor long-distance point-to-point backhaul, the antenna of should be selected.

A. Omnidirectional

B. High gain, large lobe width

C. High gain, small lobe width

D. Low gain, large lobe width

Correct Answer: C

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Huawei Certified ICT Associate-Wireless Local Area Network (H12-311-ENU) Free Practice Test