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Which of the following commands can be used to clear counter statistics?

A.

clear

B.

enable statistics

C.

restart statistics

D.

reset

802.11n exist 20M How many sub-carriers can be used to transmit data in the mode ()?

A.

48

B.

52

C.

54

D.

56

Which of the following agreements are IEEE customized 802.11 standard() ? (Select 3 Answers)

A.

802.11a/b/g/n

B.

802.11i

C.

802.1X

D.

802.11s

When did the initial application of wireless networks begin ()?

A.

During the First World War

B.

During the Second World War

C.

20 Late century

D.

2000 Years later

Which of the following ports can only belong to 1 Piece VLAN ().

A.

access

B.

hybrid

C.

trunk

D.

eth-trunk

if AP Work in infrastructure mode, then AP The working state at this time is full-duplex mode.

A.

True

B.

False

An engineer takes an AP to a shopping mall for onsite WLAN surveying, with only a simple building map and no known obstacles. During onsite signal attenuation test, the AP works in ___ mode.

A.

Fat AP

B.

Survey Mode

C.

Fit AP

D.

Monitor Mode

The following statement about the AP access control method is incorrect ().

(Select 2 Answers)

A.

By default, the control method for AP to access AC is non-authentication

B.

By configuring the AP in an offline state, authentication is required to automatically access

C.

The configuration whitelist can be authenticated based on MAC or SN

D.

If MAC authentication is used for AP access control, APs outside of the MAC authentication list can also go online after manual confirmation

Int-Serv The model provides users with end-to-end absolute

A.

Limited bandwidth reservation

B.

Low forwarding efficiency

C.

Scalability is not good

D.

Not conducive to traffic monitoring

original 802.11 What is the maximum rate supported by the protocol Mbps ()?

A.

1

B.

2

C.

5.5

D.

11