Question 1

In 802.11,channel bandwidth usually is ________.

Accepted Answer

A) 20 GHz 
B) 40 GHz 
C) 20 MHz 
D) 40 MHz 
A) 20 GHz 
B) 40 GHz 
C) 20 MHz 
D) 40 MHz

Question 2

If a radio transmission is easily blocked by obstacles,then you need to maintain ________.

Accepted Answer

A) a clear line of sight 
B) spread spectrum transmission integrity 
C) broadband transmission 
D) deep transmission 
E) shadow zone transmission 
A) a clear line of sight 
B) spread spectrum transmission integrity 
C) broadband transmission 
D) deep transmission 
E) shadow zone transmission

Question 3

Interference is minimized in ________.

Accepted Answer

A) licensed bands 
B) unlicensed bands 
A) licensed bands 
B) unlicensed bands

Question 4

(From the box,"Controlling 802.11 Transmission")CSMA-CA+ACK usually is ________.

Accepted Answer

A) required 
B) optional 
A) required 
B) optional

Question 5

The terms channel and service band mean roughly the same thing.

Accepted Answer

A) True 
 B)False

Question 6

Cellular telephony uses ________.

Accepted Answer

A) an omnidirectional antenna 
B) a dish antenna 
C) Both A and B 
D) Neither A nor B 
A) an omnidirectional antenna 
B) a dish antenna 
C) Both A and B 
D) Neither A nor B

Question 7

WLANs normally use ________.

Accepted Answer

A) licensed bands 
B) unlicensed bands 
A) licensed bands 
B) unlicensed bands

Question 8

Which unlicensed band provides greater propagation distance for a given level of power?

Accepted Answer

A) 2.4 GHz. 
B) 5 GHz. 
C) Both A and B allow about the same propagation distance. 
A) 2.4 GHz. 
B) 5 GHz. 
C) Both A and B allow about the same propagation distance.

Question 9

Attenuation with distance is faster with ________.

Accepted Answer

A) UTP transmission 
B) radio transmission 
C) Both A and B 
D) Neither A nor B 
A) UTP transmission 
B) radio transmission 
C) Both A and B 
D) Neither A nor B

Question 10

Signals usually ________.

Accepted Answer

A) travel at a single frequency 
B) spread over a range of frequencies 
A) travel at a single frequency 
B) spread over a range of frequencies

Question 11

802.11ad will ________.

Accepted Answer

A) operate in the 60 GHz radio band 
B) have short propagation distance 
C) Both A and B 
D) Neither A nor B 
A) operate in the 60 GHz radio band 
B) have short propagation distance 
C) Both A and B 
D) Neither A nor B

Question 12

An access point and a host it serves can transmit to each other simultaneously.

Accepted Answer

A) True 
 B)False

Question 13

(From the box,"Controlling 802.11 Transmission")When a wireless NIC wishes to transmit,it listens for traffic.If there is traffic,it waits.If there is no traffic,it may transmit.

Accepted Answer

A) True. 
B) Sometimes true. 
C) False. 
A) True. 
B) Sometimes true. 
C) False.

Question 14

The most rapidly growing 802.11 LAN standard today is 802.11g.

Accepted Answer

A) True 
 B)False

Question 15

In unlicensed bands,________.

Accepted Answer

A) you can use radios wherever you please 
B) you can prevent nearby businesses from setting up access points in the same channel 
C) Both A and B 
D) Neither A nor B 
A) you can use radios wherever you please 
B) you can prevent nearby businesses from setting up access points in the same channel 
C) Both A and B 
D) Neither A nor B

Question 16

Which of the following can offer speeds of about a gigabit per second?

Accepted Answer

A) 802.11g. 
B) 802.11n. 
C) 802.11ac. 
D) None of the above. 
A) 802.11g. 
B) 802.11n. 
C) 802.11ac. 
D) None of the above.

Question 17

(From the box,"Controlling 802.11 Transmission")Media access control governs transmission by ________.

Accepted Answer

A) access points 
B) wireless NICs 
C) Both A and B 
D) Neither A nor B 
A) access points 
B) wireless NICs 
C) Both A and B 
D) Neither A nor B

Question 18

The total range of possible 802.11 WLAN frequencies in the 2.4 GHz band constitutes ________.

Accepted Answer

A) a frequency spectrum 
B) a broadband 
C) a channel 
D) a service band 
E) All of the above. 
A) a frequency spectrum 
B) a broadband 
C) a channel 
D) a service band 
E) All of the above.

Question 19

Access points take ________ from wireless devices and send them on to devices on the wired LAN.They also do the converse.

Accepted Answer

A) frames 
B) packets 
A) frames 
B) packets

Question 20

As a wireless host moves farther from a wireless access point,it is likely to transition to a slower modulation method.

Accepted Answer

A) True 
 B)False

In 802.11,channel bandwidth usually is ________.

If a radio transmission is easily blocked by obstacles,then you need to maintain ________.

Interference is minimized in ________.

(From the box,"Controlling 802.11 Transmission")CSMA-CA+ACK usually is ________.

The terms channel and service band mean roughly the same thing.

Cellular telephony uses ________.

WLANs normally use ________.

Which unlicensed band provides greater propagation distance for a given level of power?

Attenuation with distance is faster with ________.

Signals usually ________.

802.11ad will ________.

An access point and a host it serves can transmit to each other simultaneously.

(From the box,"Controlling 802.11 Transmission")When a wireless NIC wishes to transmit,it listens for traffic.If there is traffic,it waits.If there is no traffic,it may transmit.

The most rapidly growing 802.11 LAN standard today is 802.11g.

In unlicensed bands,________.

Which of the following can offer speeds of about a gigabit per second?

(From the box,"Controlling 802.11 Transmission")Media access control governs transmission by ________.

The total range of possible 802.11 WLAN frequencies in the 2.4 GHz band constitutes ________.

Access points take ________ from wireless devices and send them on to devices on the wired LAN.They also do the converse.

As a wireless host moves farther from a wireless access point,it is likely to transition to a slower modulation method.

Networking: How We Got Here

Network Standards

Network Security

Network Management

Physical Layer Propagation

Switched Wired Networks

Wireless Networks 2

Tcp-Ip Internetworking

Internetworking 2

Networked Applications

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Exam 7: Wireless Networks I

In 802.11,channel bandwidth usually is ________.

If a radio transmission is easily blocked by obstacles,then you need to maintain ________.

Interference is minimized in ________.

(From the box,"Controlling 802.11 Transmission")CSMA-CA+ACK usually is ________.

The terms channel and service band mean roughly the same thing.

Cellular telephony uses ________.

WLANs normally use ________.

Which unlicensed band provides greater propagation distance for a given level of power?

Attenuation with distance is faster with ________.

Signals usually ________.

802.11ad will ________.

An access point and a host it serves can transmit to each other simultaneously.

(From the box,"Controlling 802.11 Transmission")When a wireless NIC wishes to transmit,it listens for traffic.If there is traffic,it waits.If there is no traffic,it may transmit.

The most rapidly growing 802.11 LAN standard today is 802.11g.

In unlicensed bands,________.

Which of the following can offer speeds of about a gigabit per second?

(From the box,"Controlling 802.11 Transmission")Media access control governs transmission by ________.

The total range of possible 802.11 WLAN frequencies in the 2.4 GHz band constitutes ________.

Access points take ________ from wireless devices and send them on to devices on the wired LAN.They also do the converse.

As a wireless host moves farther from a wireless access point,it is likely to transition to a slower modulation method.

Networking: How We Got Here

Network Standards

Network Security

Network Management

Physical Layer Propagation

Switched Wired Networks

Wireless Networks 2

Tcp-Ip Internetworking

Internetworking 2

Networked Applications

More on Tcp-Ip

More on Modulation

More on Telecommunications

Filters