Computer Networks Questions & Answers – Wireless LAN
1. 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 device that allows wireless devices to connect to a wired network and wireless devices itself
d) none of the mentioned
a) device that allows wireless devices to connect to a wired network
b) wireless devices itself
c) both device that allows wireless devices to connect to a wired network and wireless devices itself
d) none of the mentioned
Answer: a
Explanation: None.
Explanation: None.
2. In wireless ad-hoc network
a) access point is not required
b) access point is must
c) nodes are not required
d) none of the mentioned
a) access point is not required
b) access point is must
c) nodes are not required
d) none of the mentioned
Answer: a
Explanation: None.
Explanation: None.
3. Which multiple access technique is used by IEEE 802.11 standard for
wireless LAN?
a) CDMA
b) CSMA/CA
c) ALOHA
d) None of the mentioned
a) CDMA
b) CSMA/CA
c) ALOHA
d) None of the mentioned
Answer: b
Explanation: None.
Explanation: None.
4. In wireless distribution system
a) multiple access point are inter-connected with each other
b) there is no access point
c) only one access point exists
d) none of the mentioned
a) multiple access point are inter-connected with each other
b) there is no access point
c) only one access point exists
d) none of the mentioned
Answer: a
Explanation: None.
Explanation: None.
5. A wireless network interface controller can work in
a) infrastructure mode
b) ad-hoc mode
c) both infrastructure mode and ad-hoc mode
d) none of the mentioned
a) infrastructure mode
b) ad-hoc mode
c) both infrastructure mode and ad-hoc mode
d) none of the mentioned
Answer: c
Explanation: In infrastructure mode WNIC needs access point but in ad-hoc mode access point is not required.
Explanation: In infrastructure mode WNIC needs access point but in ad-hoc mode access point is not required.
6. In wireless network an extended service set is a set of
a) connected basic service sets
b) all stations
c) all access points
d) none of the mentioned
a) connected basic service sets
b) all stations
c) all access points
d) none of the mentioned
Answer: a
Explanation: None.
Explanation: None.
7. Mostly ________ is used in wireless LAN.
a) time division multiplexing
b) orthogonal frequency division multiplexing
c) space division multiplexing
d) none of the mentioned
a) time division multiplexing
b) orthogonal frequency division multiplexing
c) space division multiplexing
d) none of the mentioned
Answer: b
Explanation: None.
Explanation: None.
8. 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 the mentioned
a) collision detection
b) acknowledgement of data frames
c) multi-mode data transmission
d) none of the mentioned
Answer: a
Explanation: None.
Explanation: None.
9. What is Wired Equivalent Privacy (WEP) ?
a) security algorithm for ethernet
b) security algorithm for wireless networks
c) security algorithm for usb communication
d) none of the mentioned
a) security algorithm for ethernet
b) security algorithm for wireless networks
c) security algorithm for usb communication
d) none of the mentioned
Answer: b
Explanation: None.
Explanation: None.
10. What is WPA?
a) wi-fi protected access
b) wired protected access
c) wired process access
d) wi-fi process access
a) wi-fi protected access
b) wired protected access
c) wired process access
d) wi-fi process access
ليست هناك تعليقات:
إرسال تعليق