Latest Multiple Choice Questions of Data Communication


Here, I am sharing the Latest Multiple Choice Questions on Data Communications and Networking for IT Officers and all other types of Competitive Exams. These types of Latest Multiple Choice Questions of Data Communication are generally asked in competitive exams like SSC, RRB, CTET, and other government exams.

Latest Multiple Choice Questions of Data Communication

Q.1 B, Zero Code Suppression is a technique that …

(A) allows data to flow on a digital line

(B) ensures that each byte has at least one-mark bit

(C) it is the latest clear channel encoding technique developed by Bell Laboratories

(D) provides a clear channel transmission capability, allowing 64 kbps data transmission on a voice4 channel

Ans .  D

Data Communication and Networking: multiple-choice-questions-for-data-communication-and-networking

Q.2 International bipolar violations……

(A) represent coding errors caused by line impairments

(B) are used to convey information or maintain a minimum number of ones on a digital line

(C) result in successive marks having opposite polarities

(D) occur only in the laboratory

Ans .  B

Q.3 Demultiplexing by a time division multiplexer occurs based on the…….

(A) the position of data within a frame

(B) the position of a frame within a group of frames

(C) the activity of a connected device

(D) the priority assigned to a connected device

Ans .  A

Q.4 The key to the operation of ADPCM is….

(A) fast sampling

(B) high amplitude

(C) adaptive predictor

(D) digitization

Ans .  C

Q.5 The maximum modem operating rate that can be transported by ADPCM is……

(A) 300 bps

(B) 1200 bps

(C) 4800 bps

(D) 9600 bps

Ans .  C

Q.6 Higher the rate an analogue signal is sampled

(A) smaller the difference between sampled amplitudes

(B) larger the difference between sampled amplitudes

(C) greater the noise level

(D) more bits required to represent the sample

Ans .  A

Q.7 Common CVSD digitization rates are….

(A) 8 and 64 kbps

(B) 65 and 128 kbps

(C) 4 and 8 kbps

(D) 32 and 16 kbps

Ans .  D

Q.8 A voice/data multiplexer will not flow control….

(A) voice

(B) data

(C) time slots

(D) odd channels

Ans .  A

Q.9 The core for optical fibre has….

(A) lower index of refraction than air

(B) lower index of refraction than the cladding

(C) a higher index of refraction than the cladding

(D) none of these

Ans .  C

Q.10 Over a period of 30 years, a kilometre of fibre optic cable is likely to be broken.

(A) not at all

(B) once

(C) 10 times

(D) 2 or 3 times

Ans .  D

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    Rajesh Bhatia

    A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at

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