Data Questions

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131.

In IEEE 802.11, when a frame is going from a station to an AP, the address flag is _____

B

1

C

10

D

11

Correct Answer: C

None.

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132.

In IEEE 802.11, when a frame is going from one AP to another AP in a wireless distribution system, the address flag is _____

B

1

C

10

D

11

Correct Answer: D

None.

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133.

In IEEE 802.11, the access method used in the DCF sublayer is _________

A

ALOHA

B

CSMA/CA

C

CSMA/CD

D

none of the above

Correct Answer: B

None.

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134.

In IEEE 802.11, the access method used in the PCF sublayer is ______

A

contention

B

controlled

C

polling

D

none of the above

Correct Answer: C

None.

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135.

In IEEE 802.11, the ______ is a timer used for collision avoidance

A

NAV

B

BSS

C

ESS

D

none of the above

Correct Answer: A

None.

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136.

In IEEE 802.11, the MAC layer frame has ______ fields

A

four

B

five

C

six

D

none of the above

Correct Answer: D

None.

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137.

In IEEE 802.11, the addressing mechanism can include up to ______addresses

A

four

B

five

C

six

D

none of the above

Correct Answer: A

None.

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138.

. The original IEEE 802.11, uses _________

A

FHSS

B

DSSS

C

OFDM

D

either (a) or (b)

Correct Answer: D

None.

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139.

The IEEE 802.11a, uses _________

A

FHSS

B

DSSS

C

OFDM

D

either (a) or (b)

Correct Answer: C

None.

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140.

The IEEE 802.11b, uses _________

A

FHSS

B

DSSS

C

OFDM

D

either (a) or (b)

Correct Answer: B

None.

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