Practice Quiz in Digital and Data Communication Networks Part 24

(Last Updated On: December 20, 2017)

Quiz in Digital and Data Communication Networks

This is the Online Practice Quiz in Digital and Data Communication Networks Part 24 as one of the Communications Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies, Communications Books, Journals and other Communications References.

Continue Part XXIV of the Online Practice Quiz

Quiz in Digital and Data Communication Networks

Question 231. Spread spectrum stations sharing a band are identified by and distinguished from one another

A. PSN code

B. Frequency of operation

C. Clock rate

D. Modulation type


Question 232. The Hartley law states that

A. the maximum rate of information transmission depends on the channel bandwidth

B. the maximum rate of information depends on the depth of modulation

C. redundancy is essential

D. only binary codes may be used


Question 233. One of the most important aspect of any communication system because it is costly and limited

A. bandwidth

B. equipments

C. time

D. personnel


Question 234. It is a delta modulation system where the step size of the digital-to-analog converter is automatically varied, depending on the analog input signal.

A. Adaptive Delta Modulation

B. PCM

C. Differential modulation

D. Delta modulation


Question 235. It is the process of volume compression before transmission and expansion after detection.

A. pre-emphasis

B. de-emphasis

C. coding

D. companding


Question 236. A LAN device that interconnects two or more device running identical internetwork protocols.

A. Bridges

B. Gateways

C. Switches

D. Routers


Question 237. To permit the selection of 1 out of 16 equiprobable events, the number of bits required is

A. 2

B. log 16 base 10

C. 8

D. 4


Question 238. A rule of procedure that defines how data is to be transmitted is called

A. handshake

B. error-detection

C. data specifications

D. protocol


Question 239. Ten bit error occurs in two million transmitted. The bit error rate is

A. 2 x 10^-5

B. 5 x 10^-5

C. 5 x 10^-6

D. 2 x 10^-6


Question 240. It is a popular type of line encoding that produces a strong timing component for clock recovery and does not cause wandering

A. Digital biphase

B. diphase

C. Manchester code

D. Any of these

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Practice Quiz in Digital and Data Communication Networks Part 24
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