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.
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
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
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
Q.4 The key to the operation of ADPCM is….
(A) fast sampling
(B) high amplitude
(C) adaptive predictor
(D) digitization
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
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
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
Q.8 A voice/data multiplexer will not flow control….
(A) voice
(B) data
(C) time slots
(D) odd channels
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
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
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