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

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

I have attached the quiz I am working on. I currently have 40 more minutes before it will submit itself. Would like some help. 

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