HUAWEI H12-311 Testing Software 2021

NEW QUESTION 1
The lobe width is a very important parameter commonly used in directional antennas. It refers to the angle between the antenna and the radiation pattern below the peak dB The width.

• A. 3
• B. 4
• C. 5
• D. 6

Answer: A

NEW QUESTION 2
Which of the following are related parameters of the Traffic template (Select 2 Answers).

• A. 802.3 Priority Mapping Policy
• B. CAC Policy
• C. Tunnel priority mapping strategy
• D. ACK strategy

Answer: AC

NEW QUESTION 3
In an 802.11 frame, the terminal needs to obtain access rights to the wireless medium, and what kind of control message is to be sent?

• A. RTS
• B. CTS
• C. ACK
• D. PS-Poll

Answer: A

NEW QUESTION 4
For lobe width, the following description is correct (Select 3 Answers).

• A. In the main lobe range, the power density decreases by half (3dB) relative to the maximum radiation direction.
• B. The narrower the lobes, the better the directionality, the farther the radiation distance, the stronger the anti-interference ability
• C. The pattern usually has two or more petals
• D. The terminal can receive the signal only within the half power angle coverage.

Answer: ABC

NEW QUESTION 5
The architecture of the WLAN is mainly divided into a controller-based thin AP architecture and a
traditional independent fat AP architecture.

• A. True
• B. False

Answer: A

NEW QUESTION 6
If a BSS is composed entirely of STAs, what is the BSS also called?

• A. IBSS
• B. ESS
• C. SSID
• D. BSA

Answer: A

NEW QUESTION 7
The gain of antenna A is 11dBi, and the gain of antenna B is 8dBi. It can be said that antenna A has a larger gain than antenna B.

• A. 3dB
• B. 3dBi
• C. 3dBd
• D. Uncertain

Answer: ABD

NEW QUESTION 8
If an AP has been added offline, the AP can go online directly.

• A. True
• B. False

Answer: A

NEW QUESTION 9
Regarding the telnet management of the AC6605, the following statement is wrong.

• A. telnet is a way to remotely manage AC The
• B. telnet service is disabled by default on the AC The
• C. telnet service can be configured separately on the wired side and the wireless side of the AC.
• D. telnet can be authenticated based on username and passwor
• E. The transmission is encrypted andtherefore quite secur

Answer: D

NEW QUESTION 10
If a wireless client is connected to the same SSID of two APs, then what determines which wireless AP the wireless terminal is connected to?

• A. SSID
• B. ESSID
• C. BSSID
• D. BSA

Answer: C

NEW QUESTION 11
What is the maximum number of APs that can be managed by the ACU board of the Huawei plug-in controller?

• A. 1024
• B. 256
• C. 512
• D. 128

Answer: B

NEW QUESTION 12
Which of the following options are the basic functions for configuring Huawei wireless controllers (Select 3 Answers)?

• A. Configure AC-ID
• B. Configure Radio template
• C. Configure AC country code
• D. Configure AC WLAN source interface

Answer: ACD

NEW QUESTION 13
What are the WLAN operating bands (Select 2 Answers)?

• A. 2 GHz
• B. 5 GHz
• C. 5.4 GHz
• D. 2.4 GHz

Answer: BD

NEW QUESTION 14
Which type of message is used in the 802.11 frame for the terminal to receive data packets in the power saving mode? B

• A. RTS
• B. CTS
• C. ACK
• D. PS-Poll

Answer: B

NEW QUESTION 15
Authentication is not related to the authentication encryption used by the WLAN itself when it is used by the WLAN.

• A. True
• B. False

Answer: B

NEW QUESTION 16
802.11b supports () channels in the United States, where one channel does not overlap?

• A. 14;3
• B. 11;3
• C. 11;6
• D. 14; 6

Answer: B

NEW QUESTION 17
The following is a description of TKIP encryption. The error is .A. The length of the IV used in

• A. TKIP encryption is 24bits.
• B. TKIP encryption uses the same encryption algorithm as WEP encryption.
• C. The motivation for developing TKIP encryption is to upgrade the security of legacy WEP hardware.Added the mechanism of key generation, management and delivery in
• D. TKIP encryptio

Answer: A

NEW QUESTION 18
For shared key authentication, the following description is wrong.

• A. After using shared key authentication, WEP encryption must be used.
• B. Shared key requires the user and AP to use the same shared key
• C. For thin APs, the shared key is preset in the AC.
• D. The disadvantage of shared key is that it is not scalable and not very secur

Answer: C

NEW QUESTION 19
What are the wireless LAN standards that support the 5GHz band (Select 2 Answers)?

• A. 802.11a
• B. 802.11b
• C. 802.11g
• D. 802.11n

Answer: A.D

NEW QUESTION 20
If an enterprise wireless network networking mode is direct forwarding, the thin AP can convert the
802.11 data packet into an Ethernet packet, and then encapsulate the packet into a CAPWAP encapsulation and transmit the data packet to the AC through the CAPWAP tunnel.

• A. True
• B. False

Answer: B

NEW QUESTION 21
The omnidirectional antenna exhibits a degree of on the horizontal pattern.

• A. 90
• B. 180
• C. 360

Answer: C

NEW QUESTION 22
What is the US non-overlapping channel in the 2.4 GHz band?

• A. 2 , 7, 12
• B. 3, 8, 13
• C. 1, 6, 11
• D. 3, 7, 13

Answer: C

NEW QUESTION 23
What is the bandwidth of each channel in the 802.11g band?

• A. 25 MHz
• B. 20 MHz
• C. 50 MHz
• D. 22 MHz

Answer: B

NEW QUESTION 24
Which of the following statements is correct (Select 3 Answers)?

• A. WDS can transmit the data of the wired network through the wireless network as a relay architecture, thereby transmitting the network data to another wireless network environment or another wired network.
• B. The wireless network bridging function usually refers to one-to-one, but the WDS architecture can do one-to-many.
• C. WDS allows wireless APs to bridge (relay) wirelessly, but bridged wireless APs cannot provide coverage at the same time.
• D. Because virtual network lines are formed through wireless networks, WDS is also called wireless network bridging.

Answer: ABD

NEW QUESTION 25
The following statement about SSID is wrong.

• A. Multiple different SSIDs can be released on one AP
• B. The same SSID can be released on multiple APs.
• C. There is no limit to the number of SSIDs that can be configured on an AP.
• D. The same SSID signal can be released on two sets of antennas of one A

Answer: C

NEW QUESTION 26
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