HUAWEI H12-311 Ebook 2021

NEW QUESTION 1
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 2
Among the following options, is the reason for using 5G priority access.

• A. 5G frequency band is easier to network planning
• B. 5G frequency band can provide better access capacity and capacity The connection speed between the user and the AP is fast in the
• C. 5G frequency ban
• D. The transmission rate of the
• E. 5G frequency band is higher than the 2.4G frequency ban

Answer: B

NEW QUESTION 3
Which of the following options is the maximum rate supported by the 802.11g protocol?

• A. 11Mbps
• B. 22Mbps
• C. 54Mbps
• D. 108Mbps

Answer: C

NEW QUESTION 4
WDS technology increases the filexibility and convenience of the entire network structure, but only supports peer-to-peer mode of operation.

• A. True
• B. False

Answer: B

NEW QUESTION 5
Which of the following ports can only belong to one VLAN.

• A. access
• B. hybrid
• C. trunk
• D. eth-trunk

Answer: A

NEW QUESTION 6
Regarding the working principle of 5G priority, the following statement is correct.

• A. 5G priority feature is to let the 5G client send data preferentially.
• B. 5G priority is turned on, the network transfer speed of the client supporting only 2.4G will be slower.
• C. 5G priority requires the AP to work normally when it is a dual-band AP.
• D. 5G priority requires all clients to support both 2.4GHz and 5GHz bands

Answer: C

NEW QUESTION 7
For the AC6605, the following commands can be used to check whether the AP is online.

• A. display ap online all
• B. display ap all
• C. display ap-type all
• D. dispay ap-run-info all

Answer: B

NEW QUESTION 8
In the WDS peer-to-peer network, the backbone link between the Root AP and the Leaf AP is connected in the 5 GHz band. The bandwidth used by the Root AP is 149. Which of the following bands should the Leaf AP use?

• A. 149
• B. 153
• C. 157
• D. Except for 149

Answer: A

NEW QUESTION 9
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 10
For outdoor WLAN coverage, the following statement is correct (Select 3 Answers).

• A. The higher the antenna gain, the stronger the antenna directivity and the weaker the radiation gain directly below the antenna.
• B. The feeder interface must match the selected antenna
• C. The length of the feeder must not exceed 2 meters.
• D. Outdoor antennas should not blindly pursue high gain

Answer: ABD

NEW QUESTION 11
CCMP encryption is more secure than TKIP encryption because of its security.

• A. Adopt a longer IV
• B. Added a key distribution mechanism, no longer using a single key
• C. Adopting a more complex encryption algorithm
• D. Added a message integrity check mechanism

Answer: C

NEW QUESTION 12
How many channels does China support in the 2.4 GHz band?

• A. 11
• B. 13
• C. 3
• D. 5

Answer: B

NEW QUESTION 13
The basic service set is the basic component of an 802.11 network and consists of a set of workstations that communicate with each other.

• A. True
• B. False

Answer: A

NEW QUESTION 14
The upgrade operation of the Huawei wireless controller AC6605 can only be performed on the wired side of the controller.

• A. True
• B. False

Answer: A

NEW QUESTION 15
The following statement about frequency planning is correct (Select 2 Answers)?

• A. 2.4 GHz generally uses 1, 6, and 11 three non-overlapping channels for coverage.
• B. There are generally 23 non-overlapping channels available in China at 5 GHz.
• C. Microwave interference will occur in the full 2.4GHz band.
• D. If the AP is dual-frequency, it is recommended to use the 5G priority functio

Answer: AD

NEW QUESTION 16
Wireless client passive scanning is obtained by receiving what frames to get around the wireless network information?

• A. Beacon frame
• B. Probe Request frame
• C. Authentication frame
• D. Association Request frame

Answer: A

NEW QUESTION 17
The port number of the control packet of the CAPWAP tunneling protocol is

• A. 1645
• B. 1646
• C. 5246
• D. 5247

Answer: D

NEW QUESTION 18
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 19
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 20
The following is not the AP binding template .

• A. Radio frequency template
• B. AP template
• C. ESS template
• D. Planning table template

Answer: D

NEW QUESTION 21
What parameters are used in 802.11 frames to reassemble frame fragments?

• A. Frame Control
• B. Duration
• C. Address bit
• D. Fragment number

Answer: D

NEW QUESTION 22
For the CAPWAP protocol, the following description is wrong.

• A. Transmission protocol between AC and thin AP
• B. Transmission protocol between thin AP and wireless client
• C. Developed by the CAPWAP Working Group The development of the
• D. CAPWAP protocol draws on the useful features of other protocol

Answer: B

NEW QUESTION 23
If not configured, what is the default authentication method supported by the AP?

• A. mac-auth
• B. sn-auth
• C. no-auth
• D. mac-sn-auth

Answer: A

NEW QUESTION 24
Which of the following protocols is defined in the Mesh networking?

• A. 802.11a
• B. 802.11g
• C. 802.11e
• D. 802.11s

Answer: D

NEW QUESTION 25
WEP encrypted data algorithms use algorithms.

• A. RC4
• B. AES
• C. CCMP
• D. Asymmetric encryption

Answer: A

NEW QUESTION 26
If you want to create an open authentication security template, the following correct configuration is.

• A. AC-WLAN-view] security-profile name security-1 id 1[AC-WLAN-sec-prof-security-1] open authentication-method open-system [AC-WLAN-sec-prof-security-1] security-policy open[AC-WLAN-sec-prof-security-1] quit
• B. AC-WLAN-view] security-profile name security-1 id 1[AC-WLAN-sec-prof-security-1] wep authentication-method open-system [AC-WLAN-sec-prof-security-1] security-policy wep[AC-WLAN-sec-prof-security-1] quit
• C. AC-WLAN-view] security-profile name security-1 id 1[AC-WLAN-sec-prof-security-1] wpa authentication-method open-system [AC-WLAN-sec-prof-security-1] security-policy wpa[AC-WLAN-sec-prof-security-1] quit
• D. AC-WLAN-view] security-profile name security-1 id 1[AC-WLAN-sec-prof-security-1] wpa2 authentication-method open-system [AC-WLAN-sec-prof-security-1] security-policy wpa2[AC-WLAN-sec-prof-security-1] quit

Answer: B

NEW QUESTION 27
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