Question 1

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

Question 2

What happens if two nearby access points use the same channel?

Accepted Answer

A) They will interfere with each other. 
B) They will be bonded for joint operation automatically. 
C) They will be bonded for joint operation automatically if they use CSMA/CA+ACK. 
D) They will be bonded for joint operation automatically if they use RTS/CTS. 
A) They will interfere with each other. 
B) They will be bonded for joint operation automatically. 
C) They will be bonded for joint operation automatically if they use CSMA/CA+ACK. 
D) They will be bonded for joint operation automatically if they use RTS/CTS.

Question 3

CSMA/CA+ACK is ________.

Accepted Answer

A) True 
 B)False

Question 4

For wireless backup,which of the following is adequate?

Accepted Answer

A) 802.11ac 
B) 802.11g 
C) 802.11n 
D) all of the above 
A) 802.11ac 
B) 802.11g 
C) 802.11n 
D) all of the above

Question 5

When a WLAN is in use,the distribution system is the ________.

Accepted Answer

A) collection of access points 
B) Ethernet network 
C) radio transmitter in an access point 
D) radio transmitter in the access point controller 
A) collection of access points 
B) Ethernet network 
C) radio transmitter in an access point 
D) radio transmitter in the access point controller

Question 6

For which standard is 300 Mbps a typical rated speed?

Accepted Answer

A) 802.11ac 
B) 802.11ad 
C) 802.11g 
D) 802.11n 
A) 802.11ac 
B) 802.11ad 
C) 802.11g 
D) 802.11n

Question 7

Which of the following can bring gigabit speeds to clients?

Accepted Answer

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

Question 8

Beamforming can allow an access point to ________.

Accepted Answer

A) direct power to individual clients 
B) send signals to two different clients at the same time 
C) both A and B 
D) neither A nor B 
A) direct power to individual clients 
B) send signals to two different clients at the same time 
C) both A and B 
D) neither A nor B

Question 9

The most serious problem with wireless transmission in WLANs is ________.

Accepted Answer

A) inverse square law attenuation 
B) absorptive attenuation 
C) shadow zones 
D) multipath interference 
A) inverse square law attenuation 
B) absorptive attenuation 
C) shadow zones 
D) multipath interference

Question 10

CSMA/CA+ACK is reliable.

Accepted Answer

A) True 
 B)False

Question 11

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 12

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 13

Which of the following is more efficient?

Accepted Answer

A) CSMA/CA+ACK 
B) RTS/CTS 
C) Both are about equally efficient. 
A) CSMA/CA+ACK 
B) RTS/CTS 
C) Both are about equally efficient.

Question 14

When a wireless NIC using CSMA/CD receives a frame correctly,it immediately sends back a reply without listening for traffic.

Accepted Answer

A) True 
 B)False

Question 15

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 16

Two WLAN products that conform to the same standard will have almost equal performance.

Accepted Answer

A) True 
 B)False

Question 17

To handle multiple conversations in radio transmission,you use multiple ________.

Accepted Answer

A) channels 
B) frequencies 
C) service bands 
D) wires 
A) channels 
B) frequencies 
C) service bands 
D) wires

Question 18

Networks that are fast are often called broadband whether or not they use radio channels.

Accepted Answer

A) True 
 B)False

Question 19

The frequency range from 500 megahertz to 10 gigahertz is called the ________.

Accepted Answer

A) frequency spectrum 
B) commercial mobile service band 
C) unlicensed band 
D) golden zone 
A) frequency spectrum 
B) commercial mobile service band 
C) unlicensed band 
D) golden zone

Question 20

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 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?

What happens if two nearby access points use the same channel?

CSMA/CA+ACK is ________.

For wireless backup,which of the following is adequate?

When a WLAN is in use,the distribution system is the ________.

For which standard is 300 Mbps a typical rated speed?

Which of the following can bring gigabit speeds to clients?

Beamforming can allow an access point to ________.

The most serious problem with wireless transmission in WLANs is ________.

CSMA/CA+ACK is reliable.

Which of the following is usually optional in access point operation?

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.

Which of the following is more efficient?

When a wireless NIC using CSMA/CD receives a frame correctly,it immediately sends back a reply without listening for traffic.

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

Two WLAN products that conform to the same standard will have almost equal performance.

To handle multiple conversations in radio transmission,you use multiple ________.

Networks that are fast are often called broadband whether or not they use radio channels.

The frequency range from 500 megahertz to 10 gigahertz is called the ________.

Spread spectrum transmission is used in WLANs because ________.

Welcome to the Cloud

Network Standards

Network Security

Network Management

Wired Ethernet Lans

Wireless Lans 2

Tcpip Internetworking I

Tcpip Internetworking 2

Wide Area Networks

Networked Applications

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Module B More on Modulation

Module C More on Telecommunications

Module D Directory Servers

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Exam 6: Wireless Lans I

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?

What happens if two nearby access points use the same channel?

CSMA/CA+ACK is ________.

For wireless backup,which of the following is adequate?

When a WLAN is in use,the distribution system is the ________.

For which standard is 300 Mbps a typical rated speed?

Which of the following can bring gigabit speeds to clients?

Beamforming can allow an access point to ________.

The most serious problem with wireless transmission in WLANs is ________.

CSMA/CA+ACK is reliable.

Which of the following is usually optional in access point operation?

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.

Which of the following is more efficient?

When a wireless NIC using CSMA/CD receives a frame correctly,it immediately sends back a reply without listening for traffic.

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

Two WLAN products that conform to the same standard will have almost equal performance.

To handle multiple conversations in radio transmission,you use multiple ________.

Networks that are fast are often called broadband whether or not they use radio channels.

The frequency range from 500 megahertz to 10 gigahertz is called the ________.

Spread spectrum transmission is used in WLANs because ________.

Welcome to the Cloud

Network Standards

Network Security

Network Management

Wired Ethernet Lans

Wireless Lans 2

Tcpip Internetworking I

Tcpip Internetworking 2

Wide Area Networks

Networked Applications

Module a More on Tcp

Module B More on Modulation

Module C More on Telecommunications

Module D Directory Servers

Filters