Wireless LAN - Computer Networks Questions and Answers

1.

Which multiple access technique is used by IEEE 802.11 standard for wireless LAN?

   A.) CDMA
   B.) CSMA/CA
   C.) ALOHA
   D.) none of these

Answer: Option 'B'

CSMA/CA

2.

In wireless distribution system

   A.) there is no access point
   B.) only one access point exists
   C.) multiple access point are inter-connected with each other
   D.) none of these

Answer: Option 'C'

multiple access point are inter-connected with each other

3.

What is the access point (AP) in wireless LAN?

   A.) device that allows wireless devices to connect to a wired network
   B.) wireless devices itself
   C.) both (a) and (b)
   D.) none of these

Answer: Option 'A'

device that allows wireless devices to connect to a wired network

4.

In wireless ad-hoc network

   A.) access point is not required
   B.) nodes are not required
   C.) access point is must
   D.) none of these

Answer: Option 'A'

access point is not required

5.

Which one of the following event is not possible in wireless LAN.

   A.) collision detection
   B.) Acknowledgement of data frames
   C.) multi-mode data transmission
   D.) none of these

Answer: Option 'A'

collision detection

6.

Mostly ________ is used in wireless LAN.

   A.) time division multiplexing
   B.) orthogonal frequency division multiplexing
   C.) space division multiplexing
   D.) none of these

Answer: Option 'B'

orthogonal frequency division multiplexing

7.

A wireless network interface controller can work in

   A.) infrastructure mode
   B.) ad-hoc mode
   C.) both (a) and (b)
   D.) none of these

Answer: Option 'C'

both (a) and (b)

9.

In wireless network an extended service set is a set of

   A.) all stations
   B.) connected basic service sets
   C.) all access points
   D.) none of these

Answer: Option 'B'

connected basic service sets

10.

What is WPA?

   A.) wired protected access
   B.) wi-fi protected access
   C.) wired process access
   D.) wi-fi process access

Answer: Option 'B'

wi-fi protected access


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