Modulation Techniques | Chapter-wise MCQ Questions on Data Communication and Networking with Answers

Questions

6 If original signal is band limited with bandwidth of W, samples are taken, in PCM, once every

A 1/W seconds

B 1/2W seconds

C W seconds

D none of these above

Answer: Option [B]

When original signal is band limited with bandwidth of W, samples are taken, in PCM, once every 1/2W seconds

7 In PCM

A Digital signal is converted into analog signal

B Pulse Amplitude modulation samples are quantized

C Non-linear coding scheme is undertaken

D None of these

Answer: Option [B]

In Pulse Amplitude modulation signal is sampled at regular intervals at a rate higher than twice the highest signal frequency.

Article and Schedule Quiz	Start Test!

8 In MODEMS :

A Several digital signal are multiplexed

B A digital signal changes some characteristics of a carrier wave

C Digital signal is amplified

D None of these above

Answer: Option [B]

Modems modulates or converts digital signal to analog signal and analog signal to digital signal.

9 Modulation is used to :

A Reduce the bandwidth

B Separate differing transmission

C Ensure that information may be transmitted over long distances

D Allow the use of practicable antennas

Answer: Option [C]

Modulation is used to ensure that information may be transmitted over long distances

10 One factor in the accuracy of a reconstructed PCM signal is the

A Signal bandwidth

B Carrier frequency

C Number of bits used for quantization

D Baud rate

Answer: Option [C]

Take Mock Tests

Missiles Mock Test	Start Test!
SSC MTS Mock Test	Start Test
IBPS CLERK MOCK TEST	Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH)	Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi)	Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH)	Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH)	Start Test!
IB Security Assistant Mock test 1 (english)	Start Test!
UP POLICE CONSTABLE MOCK TEST 1	Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI)	Start Test!