Wireless Interview Questions - 3 | Snaprecruit.com
Wireless Interview Questions - 3 | Snaprecruit.com
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Wireless interview questions part 3
Wireless interview questions part 3
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Total Questions: 20
1. An FM detector with built-in limiting is
A. A ratio detector.
B. A discriminator.
C. An envelope detector.
D. A product detector.
Show Correct Answer
Correct Answer is :
A ratio detector.
2. In which mode of PM does the peak power level of the pulses vary?
A. PAM
B. PDM
C. PIM
D. PFM
Show Correct Answer
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
A. A ratio detector.
B. A D/A converter.
C. A product detector.
D. An envelope detector.
Show Correct Answer
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?
A. FDM
B. AFSK
C. PCM
D. None of the above
Show Correct Answer
Correct Answer is :
None of the above
5. Which of the following modes can be demodulated with an envelope detector?
A. AM
B. CW
C. FSK
D. USB
Show Correct Answer
Correct Answer is :
AM
6. The bandwidth of a fax signal is kept narrow by
A. Sending the data at a slow rate of speed.
B. Maximizing the number of digital states.
C. Optimizing the range of colors sent.
D. Using pulse modulation.
Show Correct Answer
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
A. Local oscillator.
B. Product detector.
C. Front end.
D. Selectivity in the IF chain.
Show Correct Answer
Correct Answer is :
Front end.
8. Frequency sweeping can be used to get a transmitter to produce
A. Spread-spectrum signals.
B. Time division multiplexed signals.
C. Narrowband AM signals.
D. Double sideband, suppressed carrier signals.
Show Correct Answer
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.”
A. SSB signals
B. SSTV signals
C. Synchronized communications signals
D. Any of the above
Show Correct Answer
Correct Answer is :
Any of the above
10. Identify the bandwidth and frequency of 802.11b
A. 54 Mbps
B. 11 Mbps
C. 540 Mbps
D. 5 GHz
Show Correct Answer
Correct Answer is :
11 Mbps
11. Identify the bandwidth and frequency of 802.11a
A. 54 Mbps
B. 11 Mbps
C. 540 Mbps
D.
Show Correct Answer
Correct Answer is :
54 Mbps
12. Identify the bandwidth and frequency of 802.11n
A. 54 Mbps
B. 11 Mbps
C. 540 Mbps
D. 5 GHz
Show Correct Answer
Correct Answer is :
540 Mbps
13. Identify the bandwidth and frequency of 802.11g
A. 54 Mbps
B. 11 Mbps
C. 540 Mbps
D. 5 GHz
Show Correct Answer
Correct Answer is :
54 Mbps
14. 802.11a range:
A. 91m
B. 250m
C. 45.7m
D.
Show Correct Answer
Correct Answer is :
45.7m
15. 802.11g range:
A. 91m
B. 250m
C. 45.7m
D.
Show Correct Answer
Correct Answer is :
91m
16. 802.11b range
A. 91m
B. 250m
C. 45.7m
D.
Show Correct Answer
Correct Answer is :
91m
17. 802.11n range:
A. 91m
B. 250m
C. 45.7m
D.
Show Correct Answer
Correct Answer is :
250m
18. 802.11a is interoperable with 802.11b, 802.11g, and 802.11n.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
FALSE
19. 802.11n is interoperable with 802.11b and 802.11g.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
20. 802.11g is not interoperable with 802.11b.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
FALSE
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