Question 1

MATCHING
-devices that make it much easier to manage large WLANs by implementing most of the functions of an AP

Accepted Answer

A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller 
A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller

Question 2

Increasing data transmission speed through more complex modulation schemes makes multipath distortion worse.

Accepted Answer

A) True 
 B)False

Question 3

What 802.11 standard under development uses up to 160 MHz bandwidth and can achieve data rates up to 7 Gbps?

Accepted Answer

A)  802.11bg 
B)  802.11ac 
C)  802.11cd 
D)  802.11ga 
A)  802.11bg 
B)  802.11ac 
C)  802.11cd 
D)  802.11ga

Question 4

Why is the SIFS time in the 802.11g standard effectively extended to 16 microseconds?

Accepted Answer

A)  for compatibility with 802.11a 
B)  to account for quiet time 
C)  to allow 802.11n devices on the network 
D)  to achieve data rates higher than 11 Mbps 
A)  for compatibility with 802.11a 
B)  to account for quiet time 
C)  to allow 802.11n devices on the network 
D)  to achieve data rates higher than 11 Mbps

Question 5

What is the multiplexing technique used by 802.11a to help solve the multipath distortion problem?

Accepted Answer

A)  QPSK 
B)  OFDM 
C)  FEC 
D)  PBCC 
A)  QPSK 
B)  OFDM 
C)  FEC 
D)  PBCC

Question 6

What are the three parts of an 802.11a PLCP frame? Describe them briefly.

Accepted Answer

The frame is made up of three parts: the

Question 7

Wireless controllers incorporate most AP functions including the radio.

Accepted Answer

A) True 
 B)False

Question 8

How many bits per symbol can be transmitted using 16-QAM?

Accepted Answer

A)  16 
B)  2 
C)  4 
D)  8 
A)  16 
B)  2 
C)  4 
D)  8

Question 9

What is the guard interval and what does it help prevent?

Accepted Answer

In non-HT transmissions (compatible with

Question 10

The strength of encryption relies on keeping the __________ secret as well as its length.

Accepted Answer

The answer of The strength of encryption relies on keeping...

Question 11

Which layer defines the characteristics of the wireless medium?

Accepted Answer

A)  PLCP 
B)  PMD 
C)  LLC 
D)  MAC 
A)  PLCP 
B)  PMD 
C)  LLC 
D)  MAC

Question 12

MATCHING
-interference between two devices configured to use the same frequency channel

Accepted Answer

A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller 
A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller

Question 13

Which of the following 802.11 standards uses U-NII bands and does not use ISM bands?

Accepted Answer

A)  802.11b 
B)  802.11a 
C)  802.11g 
D)  802.11n 
A)  802.11b 
B)  802.11a 
C)  802.11g 
D)  802.11n

Question 14

VPNs encrypt a connection for security and use very few processing resources.

Accepted Answer

A) True 
 B)False

Question 15

MATCHING
-a transmission technique that uses multiple radios and multiple antennas to send different parts of the same message simultaneously

Accepted Answer

A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller 
A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller

Question 16

AP _____________________ is a security problem that takes advantage of the fact that clients authenticate with the AP but not vice versa.

Accepted Answer

The answer of AP _____________________ is a security problem that...

Question 17

MATCHING
-the unused frequency space between two adjacent channels

Accepted Answer

A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller 
A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller

Question 18

The _______________ interval prevents a new symbol from arriving at the receiver before the last multipath signal reaches the receiver's antenna.

Accepted Answer

The answer of The _______________ interval prevents a new symbol...

Question 19

MATCHING
-a security protocol used in WPA that provides per packet key-mixing

Accepted Answer

A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller 
A) co-channel interference 
B) CTS-to-self 
C) guard band 
D) intersymbol interference 
E) pre-shared key
F)reduced interframe space
G)spatial multiplexing
H)symbol
I)TKIP
J)wireless controller

Question 20

How much bandwidth do 802.11n devices utilize when running at speeds up to 300 Mbps?

Accepted Answer

A)  20 MHz 
B)  22 MHz 
C)  40 MHz 
D)  44 MHz 
A)  20 MHz 
B)  22 MHz 
C)  40 MHz 
D)  44 MHz

MATCHING -devices that make it much easier to manage large WLANs by implementing most of the functions of an AP

Increasing data transmission speed through more complex modulation schemes makes multipath distortion worse.

What 802.11 standard under development uses up to 160 MHz bandwidth and can achieve data rates up to 7 Gbps?

Why is the SIFS time in the 802.11g standard effectively extended to 16 microseconds?

What is the multiplexing technique used by 802.11a to help solve the multipath distortion problem?

What are the three parts of an 802.11a PLCP frame? Describe them briefly.

Wireless controllers incorporate most AP functions including the radio.

How many bits per symbol can be transmitted using 16-QAM?

What is the guard interval and what does it help prevent?

The strength of encryption relies on keeping the __________ secret as well as its length.

Which layer defines the characteristics of the wireless medium?

MATCHING -interference between two devices configured to use the same frequency channel

Which of the following 802.11 standards uses U-NII bands and does not use ISM bands?

VPNs encrypt a connection for security and use very few processing resources.

MATCHING -a transmission technique that uses multiple radios and multiple antennas to send different parts of the same message simultaneously

AP _____________________ is a security problem that takes advantage of the fact that clients authenticate with the AP but not vice versa.

MATCHING -the unused frequency space between two adjacent channels

The _______________ interval prevents a new symbol from arriving at the receiver before the last multipath signal reaches the receiver's antenna.

MATCHING -a security protocol used in WPA that provides per packet key-mixing

How much bandwidth do 802.11n devices utilize when running at speeds up to 300 Mbps?

Introduction to Wireless Communications

Wireless Data Transmission

Radio Frequency Communications

How Antennas Work

Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Low-Speed Wireless Local Area Networks

Wireless Metropolitan Area Networks

Wireless Wide Area Networks

Radio Frequency Identification and Near-Field Communication

Wireless Communications in Business

Filters

Exam 8: High-Speed Wlans and Wlan Security

MATCHING -devices that make it much easier to manage large WLANs by implementing most of the functions of an AP

Increasing data transmission speed through more complex modulation schemes makes multipath distortion worse.

What 802.11 standard under development uses up to 160 MHz bandwidth and can achieve data rates up to 7 Gbps?

Why is the SIFS time in the 802.11g standard effectively extended to 16 microseconds?

What is the multiplexing technique used by 802.11a to help solve the multipath distortion problem?

What are the three parts of an 802.11a PLCP frame? Describe them briefly.

Wireless controllers incorporate most AP functions including the radio.

How many bits per symbol can be transmitted using 16-QAM?

What is the guard interval and what does it help prevent?

The strength of encryption relies on keeping the __________ secret as well as its length.

Which layer defines the characteristics of the wireless medium?

MATCHING -interference between two devices configured to use the same frequency channel

Which of the following 802.11 standards uses U-NII bands and does not use ISM bands?

VPNs encrypt a connection for security and use very few processing resources.

MATCHING -a transmission technique that uses multiple radios and multiple antennas to send different parts of the same message simultaneously

AP _____________________ is a security problem that takes advantage of the fact that clients authenticate with the AP but not vice versa.

MATCHING -the unused frequency space between two adjacent channels

The _______________ interval prevents a new symbol from arriving at the receiver before the last multipath signal reaches the receiver's antenna.

MATCHING -a security protocol used in WPA that provides per packet key-mixing

How much bandwidth do 802.11n devices utilize when running at speeds up to 300 Mbps?

Introduction to Wireless Communications

Wireless Data Transmission

Radio Frequency Communications

How Antennas Work

Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Low-Speed Wireless Local Area Networks

Wireless Metropolitan Area Networks

Wireless Wide Area Networks

Radio Frequency Identification and Near-Field Communication

Wireless Communications in Business

Filters