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Huawei H12-311_V3.0 - HCIA-WLAN V3.0

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Total 338 questions

The following statement is correct ().

(Select 3 Answers)

A.

WPA2 PSK authentication requires the user to enter a user name and password to connect

B.

When the user performs web authentication, it is triggered by the user's http message after successfully obtaining the IP address; at this time, it is forcibly redirected to the portal server,

Go through the certification process

C.

WPA2 uses 802.1X authentication

D.

WAPI is China's national standard system for wireless LAN

Among the following obstacles, () has the largest loss of wireless signals.

A.

Plaster ceiling

B.

Glass

C.

120mm brick wall

D.

200mm concrete wall

Which of the following is IEEE A wireless local area network standard originally formulated ()?

A.

IEEE 802.11

B.

IEEE 802.10

C.

IEEE 802.12

D.

IEEE 802.16

The omnidirectional antenna appears on the horizontal pattern as ()Spend.

A.

90

B.

180

C.

360

D.

0

an examination AC What is the command for online users ()?

A.

display users all

B.

display user-interface console 0

C.

display local-user

D.

display access-user

create radio-profile Must be bound wmm-profile Only possible, otherwise there will be configuration errors.

A.

True

B.

False

Which of the following statements is correct ()?

(Select 2 Answers)

A.

When the user performs web authentication, it is triggered by the user's http message before the IP address is successfully obtained; at this time, it is forcibly redirected to the portal server,

Go through the certification process

B.

When the user performs web authentication, it is triggered by the user's http message after successfully obtaining the IP address; at this time, it is forcibly redirected to the portal server,

Go through the certification process

C.

WPA2 uses 802.1X authentication

D.

WPA only supports TKIP, an encryption technology

Which of the following statements about establishing CAPWAP control and data tunnels are false?

A.

When both the AP and AC receive an Echo Response message, this indicates that a control tunnel has been established.

B.

When both the AP and AC receive a Keepalive message, this indicates that a control tunnel has been established.

C.

When the AP receives an Echo Response message, this indicates that a data tunnel has been established.

D.

When the AP receives a Keepalive message, this indicates that a data tunnel has been established.

Is the following statement about the introduction of frequency planning correct ()?

(Select 2 Answers)

A.

2.4GHz generally uses 1, 6, 11 three non-overlapping channels for coverage

B.

In China, 5GHz generally has 23 non-overlapping channels available

C.

Microwave interference will occur in the entire 2.4GHz frequency band

D.

If the AP is dual-band, it is recommended to use the 5G priority function

802.11 Wireless LAN CSMA/CA Which of the following are included in the mechanism ()? (Select 3 Answers)

A.

Carrier sense

B.

Multiple access

C.

Conflict detection

D.

Conflict avoidance