Question 1

Which of the following 802.11 control frames is sent by a STA to acquire the right to the wireless medium?

Options :

A : CTS

B : RTS

C : ACK

D : PS-Poll

Answer: B

Question 2

802.11b Which channels in the protocol do not overlap each other()? (Select 3 Answers)

Options :

A : 1

B : 3

C : 6

D : 11

Answer: A,B,D

Question 3

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

Answer: A,B,C

Question 4

802.11n MAC Which of the following are included in the layer improvement technology ()? (Select 2 Answers)

Options :

A : Frame aggregation technology

B : MIMO Technology

C : Block confirmation technology

D : Beamforming technology

Answer: A,C

Question 5

Capacity planning mainly starts from the aspects of equipment performance, number of users, bandwidth requirements, and wireless environment, and estimates the amount required to meet the business volume. AP number quantity

Options :

A : True

B : False

Answer: A

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