Practice Quiz in Digital and Data Communication Networks Part 11

(Last Updated On: February 3, 2020)

Quiz in Digital and Data Communication Networks

This is the Online Practice Quiz in Digital and Data Communication Networks Part 11 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 XI of the Online Practice Quiz

Quiz in Digital and Data Communication Networks

Question 101. The Hartley – Shannon theorem sets a limit on the

A. highest frequency that may be sent over a given channel

B. Quantization error

C. Aperture distortion

D. Slope overload

Question 102. Involves compression in the transmitter after the input sample has been converted to a linear PCM code and then expansion in the receiver prior to PCM coding.

A. analog companding

B. A – law companding

C. Digital companding

D. U – law companding

Question 103. A small telephone switching system that can be used as a LAN is called

A. Ring




Question 104. Which medium is the most widely used in LANs?

A. Twin Lead

B. Fiber – optic cable

C. Twisted Pair

D. Coax

Question 105. It is a set of rules implementing and governing an orderly exchange of data between layers of two devices, such as line control units and front – end processors.

A. Data Link Protocol

B. Network Protocol

C. Point to Point Protocol

D. File Transfer Protocol

Question 106. Mark and space refer respectively to

A. dot and dash

B. message and interval

C. binary 1 and binary 0

D. on and off

Question 107. Indicate which of the following systems is digital.

A. Pulse-position modulation

B. Pulse-code modulation

C. Pulse–width modulation

D. Pulse-frequency modulation

Question 108. Variation of biphase that is used for encoding SMPTE time code data and for recording on video tapes

A. Biphase - M

B. B8Z

C. Manchester


Question 109. The PCM code for each channel occupies a fixed time slot called

A. Frame time

B. Baud

C. Transmission time

D. Epoch

Question 110. In T1, it is equal to the reciprocal of the sample rate

A. Slot Time

B. Transmission time

C. Frame time

D. Bit rate

List of Practice Quizzes

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