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(solution) Question 1. 1. (TCO 5) Infrared transmission can be either _____


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Question 1. 1. (TCO 5) Infrared transmission can be either _____ or _____. (Points : 3)

 

direct, indirect

 

diffused, focused

 

direct, diffused

 

wired, wireless Question 2. 2. (TCO 5) 802.11n transmits in the following band(s): _____. (Points : 3)

 

5 GHz

 

3.6 GHz

 

2.4 GHz

 

5 GHz and 2.4 GHz Question 3. 3. (TCO 5) Sending multiple signals simultaneously is known as _____. (Points : 3)

 

simplexing

 

duplexing

 

multiplexing

 

triplexing Question 4. 4. (TCO 5) How many nonoverlapping channels are available when using 802.11a?

 

(Points : 3)

 

3

 

11

 

23

 

54 Question 5. 5. (TCO 5) In FHSS, the amount of time used to change from one frequency to the next is

 

called the _____. (Points : 3) dwell time

 

phase

 

hop time

 

modulation event (ME) Question 6. 6. (TCO 5) Each of the following channels is a nonoverlapping frequency in 802.11b

 

except channel _____. (Points : 3)

 

1

 

6

 

8

 

11 Question 7. 7. (TCO 6) Which of the following is not a management frame? (Points : 3)

 

Authentication frame

 

Association request frame

 

Control frame

 

Probe response frame Question 8. 8. (TCO 6) Which IFS frame is used when a frame must be retransmitted? (Points : 3)

 

Short IFS

 

Point coordination function IFS

 

Reduced IFS

 

Extended IFS Question 9. 9. (TCO 6) What is a restriction that applies to A-MPDUs? (Points : 3)

 

They cannot use OFDM.

 

All of the A-MPDUs within the single A-MPDU must be addressed to the same receiver. They must all share the same hop time.

 

There are no restrictions. Question 10. 10. (TCO 6) _____ frames are used to set up the initial communications between a

 

device and the access point. (Points : 3)

 

Control

 

Management

 

Initialization

 

Data

 


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