Free HCIA-WLAN V3.0 Practice Questions

A.  

0,0

B.  

0,1

C.  

1,0

D.  

1,1

A.  

True

B.  

False

A.  

Root AP

B.  

Middle AP

C.  

Bridge AP

D.  

Leaf AP

A.  

Data Frame

B.  

Control frame

C.  

Business frame

D.  

Management frame

A.  

True

B.  

False

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

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

A.  

AIFSN

B.  

SIFS

C.  

DIFS

D.  

TXOPLimit

A.  

802.11a/b/g/n

B.  

802.11i

C.  

802.1X

D.  

802.11s

A.  

Data Frame

B.  

Control frame

C.  

Management frame

D.  

Data frame, control frame, management frame have this function