Question 1

The 2.4 GHz band supports ________ possible non-overlapping 20 MHz channel(s) .

Accepted Answer

A)   1
B)   3
C)   7
D)   11 B

Question 2

Which of the following works in the 60 GHz unlicensed service band?

Accepted Answer

A)   802.11ac
B)   802.11ad
C)   802.11ax
D)   all of the above

Question 3

To transmit very rapidly in radio,you need ________.

Accepted Answer

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

Question 4

If you triple channel bandwidth,what happens to the number of channels in a service band?

Accepted Answer

A)   It triples.
B)   It increases by a factor of nine.
C)   It is reduced a third.
D)   It is reduced a ninth.

Question 5

Two access points that operate on the same channel will ________.

Accepted Answer

A)   bond
B)   coordinate their use of the channel
C)   interfere
D)   divide the available spectrum about equally C

Question 6

To connect to an access point,you must know its ________.

Accepted Answer

A)   SSID
B)   ESSID
C)   IP address
D)   Wi-Fi ID

Question 7

In Wi-Fi,2.4 GHz and 5 GHz refer to ________.

Accepted Answer

A)   frequency spectrums
B)   broadbands
C)   channels
D)   none of the above.

Question 8

Media access control governs transmission by ________.

Accepted Answer

A)   access points
B)   wireless hosts
C)   both A and B
D)   neither A nor B

Question 9

What propagation problem becomes worse when there is a large,and dense,object between sender and receiver?

Accepted Answer

A)   multipath interference
B)   shadow zones (dead zones) 
C)   inverse square law attenuation
D)   none of the above

Question 10

802.11 operates in the ________ unlicensed service band.

Accepted Answer

A)   2.4 MHz
B)   60 MHz
C)   both A and B
D)   neither A nor B

Question 11

An 802.11ac Wi-Fi compatibility testing profile contains ________ of the features of the 802.11ac.

Accepted Answer

A)   all
B)   nearly all
C)   some
D)   none

Question 12

Frequency is measured in terms of ________.

Accepted Answer

A)   nanometers
B)   hertz
C)   microns
D)   microseconds

Question 13

In roaming,a wireless client moves from one ________ to another without losing its connection.

Accepted Answer

A)   ESS
B)   BSS
C)   SSID
D)   none of the above B

Question 14

Compared to wired transmission,propagation problems in radio transmissions are ________.

Accepted Answer

A)   worse
B)   about as bad
C)   better

Question 15

Because of ________,an 802.11AX access point can communicate with an 802.11AY client.

Accepted Answer

A)   MIMO
B)   MU-MIMO
C)   backward compatibility
D)   They CANNOT communicate.

Question 16

Spread spectrum transmission is used in WLANs for ________.

Accepted Answer

A)   higher transmission speed
B)   more reliable transmission
C)   greater security
D)   more efficient transmission

Question 17

An access point can transmit to more than one wireless client at a time with ________.

Accepted Answer

A)   bonding
B)   MIMO
C)   Multiuser MIMO
D)   CSMC/CA+ACK

Question 18

What is the bandwidth of a channel that extends from 55 MHz to 60 MHz?

Accepted Answer

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

Question 19

Within a BSS (and without MU-MIMO),the access point and a wireless host it serves can transmit at the same time.

Accepted Answer

A) True 
 B)False

Question 20

Wireless access points typically link wireless clients to ________.

Accepted Answer

A)   wireless servers
B)   servers on the wired network
C)   both A and B

Exam 6: Wireless Lans I

The 2.4 GHz band supports ________ possible non-overlapping 20 MHz channel(s) .

Correct AnswerverifiedB

Which of the following works in the 60 GHz unlicensed service band?

Correct AnswerverifiedShow Answer

To transmit very rapidly in radio,you need ________.

Correct AnswerverifiedShow Answer

If you triple channel bandwidth,what happens to the number of channels in a service band?

Correct AnswerverifiedShow Answer

Two access points that operate on the same channel will ________.

Correct AnswerverifiedC

To connect to an access point,you must know its ________.

Correct AnswerverifiedShow Answer

In Wi-Fi,2.4 GHz and 5 GHz refer to ________.

Correct AnswerverifiedShow Answer

Media access control governs transmission by ________.

Correct AnswerverifiedShow Answer

What propagation problem becomes worse when there is a large,and dense,object between sender and receiver?

Correct AnswerverifiedShow Answer

802.11 operates in the ________ unlicensed service band.

Correct AnswerverifiedShow Answer

An 802.11ac Wi-Fi compatibility testing profile contains ________ of the features of the 802.11ac.

Correct AnswerverifiedShow Answer

Frequency is measured in terms of ________.

Correct AnswerverifiedShow Answer

In roaming,a wireless client moves from one ________ to another without losing its connection.

Correct AnswerverifiedB

Compared to wired transmission,propagation problems in radio transmissions are ________.

Correct AnswerverifiedShow Answer

Because of ________,an 802.11AX access point can communicate with an 802.11AY client.

Correct AnswerverifiedShow Answer

Spread spectrum transmission is used in WLANs for ________.

Correct AnswerverifiedShow Answer

An access point can transmit to more than one wireless client at a time with ________.

Correct AnswerverifiedShow Answer

What is the bandwidth of a channel that extends from 55 MHz to 60 MHz?

Correct AnswerverifiedShow Answer

Within a BSS (and without MU-MIMO),the access point and a wireless host it serves can transmit at the same time.

Correct AnswerverifiedShow Answer

Wireless access points typically link wireless clients to ________.

Correct AnswerverifiedShow Answer

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C

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B

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