Interview question based on skill :
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Total Questions: 20
1. What is the access point (AP) in wireless LAN?
Correct Answer is : device that allows wireless devices to connect to a wired network
2. In wireless ad-hoc network
Correct Answer is : access point is not required
3. Which multiple access technique is used by IEEE 802.11 standard for wireless LAN?
Correct Answer is : CSMA/CA
4. In wireless distribution system
Correct Answer is : multiple access point are inter-connected with each other
5. A wireless network interface controller can work in
Correct Answer is : both infrastructure mode and ad-hoc mode
6. In wireless network an extended service set is a set of
Correct Answer is : connected basic service sets
7. Mostly ________ is used in wireless LAN.
Correct Answer is : orthogonal frequency division multiplexing
8. Which one of the following event is not possible in wireless LAN.
Correct Answer is : collision detection
9. What is Wired Equivalent Privacy (WEP) ?
Correct Answer is : security algorithm for wireless networks
10. What is WPA?
Correct Answer is : wi-fi protected access
11. First generation cellular and cordless telephone networks are based on _________
Correct Answer is : Analog technology
12. Which of the following is true for first generation wireless systems?
Correct Answer is : Low rate
13. Which of the following network protocol is used by US cellular carriers to automatically accommodate subscribers who roam into their coverage regions?
Correct Answer is : IS-41
14. The visited system creates a _____ record for each roamer and notifies home system to update ____
Correct Answer is : VLR, HLR
15. Which of the following is not an example of second generation wireless networks?
Correct Answer is : AMPS
16. Which of the following modes is used to send image data over telephone lines?
Correct Answer is : Fax
17. The S/N ratio is a measure of
Correct Answer is : The sensitivity of a receiver.
18. Suppose an SSB suppressed carrier is at 14.335 MHz, and audio data is contained in a bandfrom 14.335 to 14.338 MHz. What is this mode?
Correct Answer is : USB
19. A receiver that responds to a desired signal, but not to another signal very close by infrequency, has good
Correct Answer is : Selectivity.
20. Fill in the blank in the following sentence to make it true: “The deviation of a narrowbandvoice FM signal normally extends up to either side of the unmodulated-carrier frequency.”
Correct Answer is : 5 kHz
