# Practice Quiz in Digital Transmission Part 2

Online Practice Quiz in Digital Transmission part 2 from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan.

This is the Online Practice Quiz in Digital Transmission part 2 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 II of the Online Practice Quiz

#### Quiz in Digital Transmission

Question 11. In ___________ there is always a transition at the middle of the bit, but the bit values are determined at the beginning of the bit. If the next bit is 0, there is a transition; if the next bit is 1, there is none.

A. Manchester

B. differential Manchester

C. both (a) and (b)

D. neither (a) nor (b)

Question 12. The Nyquist theorem specifies the minimum sampling rate to be_______.

A. equal to the lowest frequency of a signal

B. equal to the highest frequency of a signal

C. twice the bandwidth of a signal

D. twice the highest frequency of a signal

Question 13. The ______ scheme uses three levels (+V, 0, and -V) and three transition rules to move between the levels.

A. 4B5B

B. MLT-3

C. 2B1Q

D. none of these

Question 14. In _______ encoding, the duration of the bit is divided into two halves. The voltage remains at one level during the first half and moves to the other level in the second half. The transition at the middle of the bit provides synchronization.

A. Manchester

B. differential Manchester

C. both (a) and (b)

D. neither (a) nor (b)

Question 15. In _______ transmission, a start bit and a stop bit frame a character byte.

A. synchronous serial

B. asynchronous serial

C. parallel

D. (a) and (b)

Question 16. In _______encoding, we use three levels: positive, zero, and negative.

A. unipolar

B. polar

C. bipolar

D. none of these

Question 17. In asynchronous transmission, the gap time between bytes is _______.

A. variable

B. fixed

C. zero

D. a function of the data rate

Question 18. In _____, the level of the voltage determines the value of the bit.

A. NRZ-I

B. NRZ-L

C. both (a) and (b)

D. neither (a) nor (b)

Question 19. In _______ transmission, bits are transmitted over a single wire, one at a time.

A. asynchronous serial

B. synchronous serial

C. parallel

D. (a) and (b)

Question 20. While there is (are) only _____ way(s) to send parallel data, there is (are) _____ subclass(es) of serial transmission.

A. one; two

B. one; three

C. two; three

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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