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H12-311_V3.0 HCIA-WLAN V3.0 is now Stable and With Pass Result | Test Your Knowledge for Free

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H12-311_V3.0 Practice Questions

HCIA-WLAN V3.0

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Total Questions : 338

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Question # 21

802.11 In the frame, it means that the wireless station AP When sending a signal, To DS and From DS What are the values of ()?

Options:

A.  

0,0

B.  

0,1

C.  

1,0

D.  

1,1

Discussion 0
Question # 22

BSS Full name Basic Service Set ,BSS It can be divided Independent BSS and Infrastructure BSS Two kinds.

Options:

A.  

True

B.  

False

Discussion 0
Question # 23

Which of the following AP Mode does not belong to WDS The internet()?

Options:

A.  

Root AP

B.  

Middle AP

C.  

Bridge AP

D.  

Leaf AP

Discussion 0
Question # 24

802.11 There are three frame types, namely (). (Select 3 Answers)

Options:

A.  

Data Frame

B.  

Control frame

C.  

Business frame

D.  

Management frame

Discussion 0
Question # 25

802.11b is a protocol based on Orthogonal Frequency Division Multiplexing (OFDM for short) technology

Options:

A.  

True

B.  

False

Discussion 0
Question # 26

For the lobe width, which of the following descriptions is correct is (). (Select 3 Answers)

Options:

A.  

Within the range of the main lobe, the power density relative to the maximum radiation direction is reduced by half (3dB) Angle

B.  

The narrower the lobe width, the better the directivity, the longer the radiation distance, the stronger the anti-interference ability

C.  

The pattern usually has two or more lobes

D.  

Only within the coverage of the half power angle, the terminal can receive the signal

Discussion 0
Question # 27

The antenna gains gain through ().

Options:

A.  

Use power amplifiers in antenna systems

B.  

Make the antenna radiation more concentrated

C.  

Use high-efficiency antenna feeder

D.  

Use equipment with low standing wave ratio

Discussion 0
Question # 28

Which of the following options belong EDCA Parameters? (Select 2 Answers)

Options:

A.  

AIFSN

B.  

SIFS

C.  

DIFS

D.  

TXOPLimit

Discussion 0
Question # 29

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

Options:

A.  

802.11a/b/g/n

B.  

802.11i

C.  

802.1X

D.  

802.11s

Discussion 0
Question # 30

802.11 In the frame, STA Which type of frame () does the association request and authentication request belong to?

Options:

A.  

Data Frame

B.  

Control frame

C.  

Management frame

D.  

Data frame, control frame, management frame have this function

Discussion 0
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