Breathing H12-311 Item Pool 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 channels in the 802.11b protocol do not overlap each other (Select 3 Answers)?

• A. 1
• B. 3
• C. 6
• D. 11

Answer: ACD

NEW QUESTION 3
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 4
Which of the following standards organizations is proposed by the CAPWAP protocol?

• A. FCC
• B. IETF
• C. CCC
• D. ETSI

Answer: B

NEW QUESTION 5
The AC performs a load balancing process based on the information.

• A. The AP periodically sends information about the STA associated with it to the AC.
• B. STA periodically reports the currently associated AP ID.
• C. AC periodically queries the number of STAs associated with an AP.
• D. STA periodically searches for the AP information and reports the AP ID through the associated A

Answer: B

NEW QUESTION 6
WIDS attack detection includes (Select 3 Answers).

• A. Flood attack detection
• B. Weak IV attack detection
• C. Spoof attack detection
• D. Microwave interference detection

Answer: ABC

NEW QUESTION 7
For indoor distributed APs, the following description is correct (B).

• A. AP power can be up to 800mW.
• B. It can be deployed in conjunction with the carrier's 3G network.
• C. Waterproof and dustproof
• D. AP6310SN supports dual frequency mode

Answer: B

NEW QUESTION 8
Which of the following are factors that need to be considered for AP capacity planning (Select 3 Answers)

• A. Equipment performance
• B. Number of concurrent users
• C. Bandwidth requirements
• D. Power supply type

Answer: ABD

NEW QUESTION 9
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 10
Which of the following 2.4GHz bands are Selective Answers (ABD) (Select 3 Answers).

• A. 6 and 11
• B. 3 and 8
• C. 4 and 8
• D. 4 and 10

Answer: ABD

NEW QUESTION 11
The following service models can provide end-to-end QoS services, but the scalability is not good.

• A. Best Effort model
• B. IntServ model
• C. FIFO model
• D. DiffServ model

Answer: B

NEW QUESTION 12
If an AP has been added offline, the AP can go online directly.

• A. True
• B. False

Answer: A

NEW QUESTION 13
Which of the following is included in the 802.11n MAC layer improvement technology (Select 2 Answers)?

• A. Frame aggregation technology
• B. MIMO technology
• C. Block confirmation technology
• D. Beamforming technology

Answer: AC

NEW QUESTION 14
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 15
The following description of the management VLAN is correct.

• A. Mainly responsible for transmitting data when WLAN users access the Internet
• B. PVID VLAN under WLAN ESS interface
• C. Service VLAN under the service set template
• D. Responsible for establishing the CAPWAP tunnel between the AC and the AP.

Answer: D

NEW QUESTION 16
Huawei AC controller AC6605 supports user access security management through security templates and supports WEP, WPA/WPA2, and WAPI security policies.

• A. True
• B. False

Answer: A

NEW QUESTION 17
To create a radio-profile, you must bind wmm-profile, or you will get an error.

• A. True
• B. False

Answer: A

NEW QUESTION 18
If the terminal supports both 5 GHz and 2.4 GHz functions, the AP can be configured to control such terminals to preferentially access 5 GHz.

• A. True
• B. False

Answer: A

NEW QUESTION 19
Radio frequency mainly uses spread spectrum technology. Which of the following technologies belong to Spread 2 Answers?

• A. FHSS
• B. DSSS
• C. QPSK
• D. OFDM

Answer: AB

NEW QUESTION 20
To create a user for Huawei's AC, first use the aaa command to enter the view.

• A. True
• B. False

Answer: A

NEW QUESTION 21
What are the QoS service models (Select 3 Answers).

• A. Best Effort model
• B. IntServ model
• C. FIFO model
• D. DiffServ model

Answer: ABD

NEW QUESTION 22
Which of the following features (BCD) (Select 3 Answers) is available for the Huawei WLAN Planning Tool.

• A. Support automatic identification and identification of obstacles
• B. Support common coverage area and key coverage area division
• C. Support automatic deployment of AP location
• D. Support WLAN planning report for export specification

Answer: BCD

NEW QUESTION 23
The following is an incorrect way to refer to AP access control (Select 2 Answers).

• A. By default, the access control mode of the AP to the AC is not authenticated.
• B. By configuring the AP in the offline state, authentication is required to automatically access the AP.
• C. The configuration whitelist can be authenticated based on the MAC or authenticated based on the SN.
• D. If the AP access control adopts MAC authentication, the AP outside the MAC authentication list can also be online after being manually confirmed.

Answer: AB

NEW QUESTION 24
What VLAN is used to establish a CAPWAP tunnel VLAN for the AP and AC?

• A. Management VLAN
• B. Service VLAN
• C. User VLAN
• D. Authentication VLAN

Answer: A

NEW QUESTION 25
In the term of PoE, what does the AP belong to?

• A. PSE
• B. PD
• C. PI
• D. PSU

Answer: A

NEW QUESTION 26
......