Interview question based on skill :
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Total Questions: 20
1. An FM detector with built-in limiting is
Correct Answer is : A ratio detector.
2. In which mode of PM does the peak power level of the pulses vary?
Correct Answer is : PAM
3. A continuously variable signal (such as music audio) can be recovered from a signal havingonly a few discrete levels or states by means of
Correct Answer is : A D/A converter.
4. In which mode are signals intertwined in the time domain at the transmitter, and thenseparated again at the receiver?
Correct Answer is : None of the above
5. Which of the following modes can be demodulated with an envelope detector?
Correct Answer is : AM
6. The bandwidth of a fax signal is kept narrow by
Correct Answer is : Sending the data at a slow rate of speed.
7. The dynamic range in a superhet is largely influenced by the performance of the
Correct Answer is : Front end.
8. Frequency sweeping can be used to get a transmitter to produce
Correct Answer is : Spread-spectrum signals.
9. Fill in the blank to make the following sentence true: “The reception of can beimproved by the use of DSP.”
Correct Answer is : Any of the above
10. Identify the bandwidth and frequency of 802.11b
Correct Answer is : 11 Mbps
11. Identify the bandwidth and frequency of 802.11a
Correct Answer is : 54 Mbps
12. Identify the bandwidth and frequency of 802.11n
Correct Answer is : 540 Mbps
13. Identify the bandwidth and frequency of 802.11g
Correct Answer is : 54 Mbps
14. 802.11a range:
Correct Answer is : 45.7m
15. 802.11g range:
Correct Answer is : 91m
16. 802.11b range
Correct Answer is : 91m
17. 802.11n range:
Correct Answer is : 250m
18. 802.11a is interoperable with 802.11b, 802.11g, and 802.11n.
Correct Answer is : FALSE
19. 802.11n is interoperable with 802.11b and 802.11g.
Correct Answer is : TRUE
20. 802.11g is not interoperable with 802.11b.
Correct Answer is : FALSE
