Question 1

802.11n is designed to operate in the ________ unlicensed band.

Accepted Answer

A) 2.4 GHz 
B) 5 GHz 
C) Both A and B 
D) Neither A nor B 
A) 2.4 GHz 
B) 5 GHz 
C) Both A and B 
D) Neither A nor B

Question 2

(From the box,"Controlling 802.11 Transmission")Which of the following is usually optional in access point operation?

Accepted Answer

A) CSMA/CA+ACK. 
B) RTS/CTS. 
C) Both A and B 
D) Neither A nor B 
A) CSMA/CA+ACK. 
B) RTS/CTS. 
C) Both A and B 
D) Neither A nor B

Question 3

In the Shannon Equation,if you quadruple the bandwidth in a channel while the signal-to-noise ratio remains the same,you can transmit ________.

Accepted Answer

A) Log2(1+4)times as fast 
B) Log2(1+1/4)times as fast 
C) about 4 times as fast 
D) about 1/4 as fast 
E) at the same speed,but more reliably 
A) Log2(1+4)times as fast 
B) Log2(1+1/4)times as fast 
C) about 4 times as fast 
D) about 1/4 as fast 
E) at the same speed,but more reliably

Question 4

MIMO increases ________.

Accepted Answer

A) throughput 
B) propagation distance 
C) Both A and B 
D) Neither A nor B 
A) throughput 
B) propagation distance 
C) Both A and B 
D) Neither A nor B

Question 5

The signal strength at 20 meters is 90 mW;the signal strength at 60 meters would be 10 mW.

Accepted Answer

A) True 
 B)False

Question 6

The frequency spectrum extends ________.

Accepted Answer

A) into the megahertz range 
B) into the gigahertz range 
C) into the visible light range 
D) into the ultraviolet range 
E) to infinity 
A) into the megahertz range 
B) into the gigahertz range 
C) into the visible light range 
D) into the ultraviolet range 
E) to infinity

Question 7

A channel has more bandwidth than is necessary given data transmission speeds requirements in ________ transmission.

Accepted Answer

A) normal radio 
B) reliable commercial 
C) spread spectrum transmission 
D) licensed 
E) None of the above. 
A) normal radio 
B) reliable commercial 
C) spread spectrum transmission 
D) licensed 
E) None of the above.

Question 8

Wireless radio transmission usually is expressed in terms of ________.

Accepted Answer

A) wavelength 
B) frequency 
C) Both A and B 
D) Neither A nor B 
A) wavelength 
B) frequency 
C) Both A and B 
D) Neither A nor B

Question 9

Wireless network standards come from ________.

Accepted Answer

A) OSI 
B) TCP/IP 
C) Both A and B 
D) Neither A nor B 
A) OSI 
B) TCP/IP 
C) Both A and B 
D) Neither A nor B

Question 10

802.11g has a rated speed of ________.

Accepted Answer

A) 11 Mbps 
B) 54 Gbps 
C) 300 Mbps 
D) 1 Gbps 
A) 11 Mbps 
B) 54 Gbps 
C) 300 Mbps 
D) 1 Gbps

Question 11

The 2.4 GHz band supports ________ nonoverlapping channels.

Accepted Answer

A) 1 
B) 3 
C) 7 
D) 11 
E) more than 11 
A) 1 
B) 3 
C) 7 
D) 11 
E) more than 11

Question 12

(From the box,"Controlling 802.11 Transmission")When a wireless NIC receives a frame correctly,it immediately sends back a reply without listening for traffic.

Accepted Answer

A) True 
 B)False

Question 13

A channel extends from 55 MHz to 60 MHz.Its bandwidth is ________.

Accepted Answer

A) 60 MHz 
B) 55 MHz 
C) 65 MHz 
D) None of the above. 
A) 60 MHz 
B) 55 MHz 
C) 65 MHz 
D) None of the above.

Question 14

The other wireless device is far away in a known direction.You should use ________.

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 15

A wireless host sends a packet to a server on the company's wired Ethernet LAN via an access point.How many frames will be involved in this one-way transmission?

Accepted Answer

A) 1. 
B) 2. 
C) 3. 
D) 4. 
E) There will be one frame for each switch along the way. 
A) 1. 
B) 2. 
C) 3. 
D) 4. 
E) There will be one frame for each switch along the way.

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Mesh networking in 802.11 is likely to use ________.

Accepted Answer

A) only wireless devices 
B) wireless devices and the site's wired LAN 
C) Both A and B 
A) only wireless devices 
B) wireless devices and the site's wired LAN 
C) Both A and B

Question 18

Wireless LAN standards are created by the ________ Working Group.

Accepted Answer

A) 802.1 
B) 802.3 
C) 802.11 
D) 802.3W 
A) 802.1 
B) 802.3 
C) 802.11 
D) 802.3W

802.11n is designed to operate in the ________ unlicensed band.

(From the box,"Controlling 802.11 Transmission")Which of the following is usually optional in access point operation?

In the Shannon Equation,if you quadruple the bandwidth in a channel while the signal-to-noise ratio remains the same,you can transmit ________.

MIMO increases ________.

The signal strength at 20 meters is 90 mW;the signal strength at 60 meters would be 10 mW.

The frequency spectrum extends ________.

A channel has more bandwidth than is necessary given data transmission speeds requirements in ________ transmission.

Wireless radio transmission usually is expressed in terms of ________.

Wireless network standards come from ________.

802.11g has a rated speed of ________.

The 2.4 GHz band supports ________ nonoverlapping channels.

(From the box,"Controlling 802.11 Transmission")When a wireless NIC receives a frame correctly,it immediately sends back a reply without listening for traffic.

A channel extends from 55 MHz to 60 MHz.Its bandwidth is ________.

The other wireless device is far away in a known direction.You should use ________.

A wireless host sends a packet to a server on the company's wired Ethernet LAN via an access point.How many frames will be involved in this one-way transmission?

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

Mesh networking in 802.11 is likely to use ________.

Wireless LAN standards are created by the ________ Working Group.

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

802.11n is designed to operate in the ________ unlicensed band.

(From the box,"Controlling 802.11 Transmission")Which of the following is usually optional in access point operation?

In the Shannon Equation,if you quadruple the bandwidth in a channel while the signal-to-noise ratio remains the same,you can transmit ________.

MIMO increases ________.

The signal strength at 20 meters is 90 mW;the signal strength at 60 meters would be 10 mW.

The frequency spectrum extends ________.

A channel has more bandwidth than is necessary given data transmission speeds requirements in ________ transmission.

Wireless radio transmission usually is expressed in terms of ________.

Wireless network standards come from ________.

802.11g has a rated speed of ________.

The 2.4 GHz band supports ________ nonoverlapping channels.

(From the box,"Controlling 802.11 Transmission")When a wireless NIC receives a frame correctly,it immediately sends back a reply without listening for traffic.

A channel extends from 55 MHz to 60 MHz.Its bandwidth is ________.

The other wireless device is far away in a known direction.You should use ________.

A wireless host sends a packet to a server on the company's wired Ethernet LAN via an access point.How many frames will be involved in this one-way transmission?

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

Mesh networking in 802.11 is likely to use ________.

Wireless LAN standards are created by the ________ Working Group.

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