Practice Quiz in Digital Transmission Part 1

Online Practice Quiz in Digital Transmission part 1 from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan.

Practice Quiz in Digital Transmission

This is the Online Practice Quiz in Digital Transmission part 1 from the book, Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you test your knowledge and skill before taking the Board Exam.

Start Part I of the Online Practice Quiz

Quiz in Digital Transmission

Question 1. Which encoding method uses alternating positive and negative values for 1s?

A. AMI

B. RZ

C. NRZ-I

D. Manchester


Question 2. The first step in PCM is ________.

A. quantization

B. sampling

C. modulation

D. none of these


Question 3. In _______ transmission, bits are transmitted simultaneously, each across its own wire.

A. Asynchronous serial

B. Synchronous serial

C. Parallel

D. (a) and (b)


Question 4. Two common scrambling techniques are ________.

A. B8ZS and HDB3

B. AMI and NRZ

C. NRZ and RZ

D. Manchester and differential Manchester


Question 5. The minimum bandwidth of Manchester and differential Manchester is ____ that of NRZ.

A. the same as

B. twice

C. thrice

D. none of these


Question 6. PCM is an example of _______ conversion.

A. analog-to-analog

B. analog-to-digital

C. digital-to-digital

D. digital-to-analog


Question 7. In a _____ scheme, all the signal levels are on one side of the time axis, either above or below.

A. unipolar

B. polar

C. bipolar

D. all of these


Question 8. ________ is normally referred to as mB/nB coding; it replaces each m-bit group with an n-bit group.

A. Line coding

B. Block coding

C. Scrambling

D. None of these


Question 9. Block coding can help in _______ at the receiver.

A. Synchronization

B. Error detection

C. Attenuation

D. (a) and (b)


Question 10. The _____ scheme uses data patterns of size 2 and encodes the 2-bit patterns as one signal element belonging to a four-level signal.

A. MLT-3

B. 4B5B

C. 2B1Q

D. none of these

More Practice Quiz in Digital Transmission

Practice Quiz Part 1

Practice Quiz Part 2

Practice Quiz Part 3

Practice Quiz Part 4

Practice Quiz Part 5

Complete Practice Quiz in Data Communications and Networking

Note: After taking this particular quiz, you can proceed to check all the topics.


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