# Practice Quiz in Digital Transmission Part 3

Online Practice Quiz in Digital Transmission part 3 from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan.

This is the Online Practice Quiz in Digital Transmission part 3 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.

### Continue Part III of the Online Practice Quiz

#### Quiz in Digital Transmission

Question 21. There are three sampling methods: __________.

A. ideal, natural, and flat-top

B. ideal, sampled, and flat-top

C. quantized, sampled, and ideal

D. none of these

Question 22. In decoding a digital signal, the receiver calculates a running average of the received signal power, called the _______.

A. base

B. line

C. baseline

D. none of these

Question 23. _______ provides redundancy to ensure synchronization and inherent error detection.

A. Line coding

B. Block coding

C. Scrambling

D. none of these

Question 24. Which quantization level results in a more faithful reproduction of the signal?

A. 2

B. 8

C. 16

D. 32

Question 25. The ________ rate defines the number of data elements sent in 1s; the ______ rate is the number of signal elements sent in 1s.

A. signal; data

B. data; signal

C. baud; bit

D. none of these

Question 26. In Manchester and differential Manchester encoding, the transition at the middle of the bit is used for __________.

A. bit transfer

B. synchronization

C. baud transfer

D. none of these

Question 27. ___________ conversion involves three techniques: line coding, block coding, and scrambling.

A. Analog-to-analog

B. Analog-to-digital

C. Digital-to-analog

D. Digital-to-digital

Question 28. _______ encoding has a transition at the middle of each bit.

A. Manchester

B. Differential Manchester

C. RZ

D. all of these

Question 29. Unipolar, bipolar, and polar encoding are types of _______ encoding.

A. line

B. block

C. NRZ

D. Manchester

Question 30. ______ substitutes eight consecutive zeros with 000VB0VB.

A. B4B8

B. B8ZS

C. HDB3

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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