H12-311 Online Practice Questions and Answers

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

A. 11

B. 13

C. 3

D. 5

What is the distance between the center frequencies of the channels in the 2.4 GHz band?

A. 20 MHz

B. 22 MHz

C. 5 MHz

D. 10 MHz

The parameter used in the 802.11 frame to check the integrity of the received frame is .

A. Frame Control

B. Duration

C. FCS

D. Sequence Control Bit

What is the value used to record the Network Allocation Vector (NAV) in an 802.11 frame?

A. Frame Control

B. Duration

C. address bit

D. Sequence control bit

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

A. Address 1

B. Address 2

C. Address 3

D. Address 4

When a data frame is sent and acknowledged, what is the time interval to wait before the next data frame is sent ()?

A. SIFS

B. IFS

C. DIFS

D. PIFS

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

Huawei Plug-in Controllers Which series of switches (Select 3 Answers) are available for Huawei ACU boards?

A. S9300 series switches

B. S9700 series switches

C. S7700 series switches

D. S5700 series switches

The roaming of the terminal in different VLANs belongs to.

A. Seamless AP roaming

B. Layer 2 roaming

C. Three-layer roaming

D. Four-layer roaming

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 function.