Question 1

When a host moves from one wireless access point to another in a WLAN,this is ________.

Accepted Answer

A) a handoff 
B) roaming 
C) Both A and B 
D) Neither A nor B 
A) a handoff 
B) roaming 
C) Both A and B 
D) Neither A nor B C

Question 2

Wireless network standards operate at ________.

Accepted Answer

A) the data link layer 
B) the internet layer 
C) Both A and B 
D) Neither A nor B 
A) the data link layer 
B) the internet layer 
C) Both A and B 
D) Neither A nor B A

Question 3

Spread spectrum transmission is used in WLANs because ________.

Accepted Answer

A) it is required by regulators 
B) it offers strong security 
C) Both A and B 
D) Neither A nor B 
A) it is required by regulators 
B) it offers strong security 
C) Both A and B 
D) Neither A nor B A

Question 4

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

Accepted Answer

A) efficient 
B) inefficient 
A) efficient 
B) inefficient

Question 5

There is less interference in the 2.4 GHz band than in the 5 GHz band.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following uses OFDM?

Accepted Answer

A) 802.11g. 
B) 802.11n. 
C) Both A and B 
D) Neither A nor B 
A) 802.11g. 
B) 802.11n. 
C) Both A and B 
D) Neither A nor B

Question 7

To transmit very rapidly in RADIO,you need ________.

Accepted Answer

A) single-frequency transmission 
B) single-mode transmission 
C) multimode transmission 
D) wide bandwidth 
E) narrow bandwidth 
A) single-frequency transmission 
B) single-mode transmission 
C) multimode transmission 
D) wide bandwidth 
E) narrow bandwidth

Question 8

802.11n may offer a rated speed of about ________.

Accepted Answer

A) 11 Mbps 
B) 54 Mbps 
C) 300 Mbps 
D) 3 Gbps 
A) 11 Mbps 
B) 54 Mbps 
C) 300 Mbps 
D) 3 Gbps

Question 9

To transmit data very rapidly,you would want a ________ channel.

Accepted Answer

A) narrowband 
B) broadband 
C) single-frequency band 
D) Any of the above. 
A) narrowband 
B) broadband 
C) single-frequency band 
D) Any of the above.

Question 10

Which of the following is true?

Accepted Answer

A) An 802.11n host can work with an 802.11g access point. 
B) An 802.11g host can work with an 802.11n access point. 
C) Both A and B 
D) Neither A nor B 
A) An 802.11n host can work with an 802.11g access point. 
B) An 802.11g host can work with an 802.11n access point. 
C) Both A and B 
D) Neither A nor B

Question 11

Radio has more reliable transmission than UTP.

Accepted Answer

A) True 
 B)False

Question 12

Frequency is measured in terms of ________.

Accepted Answer

A) nanometers 
B) hertz 
C) Both A and B 
D) Neither A nor B 
A) nanometers 
B) hertz 
C) Both A and B 
D) Neither A nor B

Question 13

802.11n will be superior to current 802.11 standards by ________.

Accepted Answer

A) offering wider channels 
B) sending multiple spatial data streams in a single channel between wireless access points and wireless NICs 
C) Both A and B 
D) Neither A nor B 
A) offering wider channels 
B) sending multiple spatial data streams in a single channel between wireless access points and wireless NICs 
C) Both A and B 
D) Neither A nor B

Question 14

There is an access point that serves eight wireless hosts.On how many channels will these devices transmit during the course of an hour or two?

Accepted Answer

A) 1. 
B) 2 (one in each direction). 
C) 7. 
D) 8. 
E) 9. 
A) 1. 
B) 2 (one in each direction). 
C) 7. 
D) 8. 
E) 9.

Question 15

What propagation problem becomes worse as frequency increases?

Accepted Answer

A) Absorptive attenuation. 
B) Electromagnetic interference. 
C) Both A and B 
D) Neither A nor B 
A) Absorptive attenuation. 
B) Electromagnetic interference. 
C) Both A and B 
D) Neither A nor B

Question 16

Which unlicensed band is defined the same way in most countries around the world?

Accepted Answer

A) 2.4 GHz. 
B) 5 GHz. 
C) Both A and B 
D) None of the above. 
A) 2.4 GHz. 
B) 5 GHz. 
C) Both A and B 
D) None of the above.

Question 17

Individual throughput falls as the number of wireless hosts using an access point increases.

Accepted Answer

A) True 
 B)False

Question 18

802.11 standards are being developed to work in the ________ unlicensed band.

Accepted Answer

A) 2.4 GHz 
B) 5 GHz 
C) Both A and B 
D) None of the above. 
A) 2.4 GHz 
B) 5 GHz 
C) Both A and B 
D) None of the above.

Question 19

Spread spectrum transmission is used in WLANs for ________.

Accepted Answer

A) higher transmission speed 
B) more reliable transmission 
C) greater security 
D) All of the above. 
A) higher transmission speed 
B) more reliable transmission 
C) greater security 
D) All of the above.

Question 20

Which form of spread spectrum transmission divides the channel into many smaller channels called subcarriers?

Accepted Answer

A) DSSS. 
B) FHSS. 
C) OFDM. 
D) All of the above. 
E) None of the above. 
A) DSSS. 
B) FHSS. 
C) OFDM. 
D) All of the above. 
E) None of the above.

When a host moves from one wireless access point to another in a WLAN,this is ________.

Wireless network standards operate at ________.

Spread spectrum transmission is used in WLANs because ________.

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

There is less interference in the 2.4 GHz band than in the 5 GHz band.

Which of the following uses OFDM?

To transmit very rapidly in RADIO,you need ________.

802.11n may offer a rated speed of about ________.

To transmit data very rapidly,you would want a ________ channel.

Which of the following is true?

Radio has more reliable transmission than UTP.

Frequency is measured in terms of ________.

802.11n will be superior to current 802.11 standards by ________.

There is an access point that serves eight wireless hosts.On how many channels will these devices transmit during the course of an hour or two?

What propagation problem becomes worse as frequency increases?

Which unlicensed band is defined the same way in most countries around the world?

Individual throughput falls as the number of wireless hosts using an access point increases.

802.11 standards are being developed to work in the ________ unlicensed band.

Spread spectrum transmission is used in WLANs for ________.

Which form of spread spectrum transmission divides the channel into many smaller channels called subcarriers?

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

When a host moves from one wireless access point to another in a WLAN,this is ________.

Wireless network standards operate at ________.

Spread spectrum transmission is used in WLANs because ________.

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

There is less interference in the 2.4 GHz band than in the 5 GHz band.

Which of the following uses OFDM?

To transmit very rapidly in RADIO,you need ________.

802.11n may offer a rated speed of about ________.

To transmit data very rapidly,you would want a ________ channel.

Which of the following is true?

Radio has more reliable transmission than UTP.

Frequency is measured in terms of ________.

802.11n will be superior to current 802.11 standards by ________.

There is an access point that serves eight wireless hosts.On how many channels will these devices transmit during the course of an hour or two?

What propagation problem becomes worse as frequency increases?

Which unlicensed band is defined the same way in most countries around the world?

Individual throughput falls as the number of wireless hosts using an access point increases.

802.11 standards are being developed to work in the ________ unlicensed band.

Spread spectrum transmission is used in WLANs for ________.

Which form of spread spectrum transmission divides the channel into many smaller channels called subcarriers?

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