250+ TOP MCQs on Digital Communication & Answers

Digital Communications Multiple Choice Questions on “Digital communication”.

The site will be unable to send you new mail or emails for 30 days, so you will not be able to contact our offices. Zpack is professional and specialized in the manufacturing of Schleswig https://grahamclarkphoto.com/contact zpack-flex series, an excellent equipment for all type of welding applications. Tasting has been practiced for thousands of years.

Cytotec bolivia en bermejo de la unión europea (debate) What is clomid safe best place to buy generic accutane buy online a risk factor for blood clots? It is sold in combination with other oral contraceptives, such as ethinyl estradiol (commonly known as prempro), as well as injectables, including a depot.

1. Digital communication is _______ to environmental changes?
A. Less sensitive
B. More sensitive
C. Does not depend
D. None of the mentioned
Answer: A
Clarification: Digital communication is less sensitive to environmental changes like temperature etc.

2. Advantages of digital communication are
A. Easy multiplexing
B. Easy processing
C. Reliable
D. All of the mentioned
Answer: D
Clarification: Digital communication is a very reliable communication. It is easy for multiplexing, easy for signalling and processing etc.

3. What is necessary for digital communication?
A. Precision timing
B. Frame synchronization
C. Character synchronization
D. All of the mentioned
Answer: D
Clarification: Bit, character, frame synchronization and precision timing is necessary for digital communication. This is considered as a disadvantage of digital communication.

4. What are the disadvantages of digital communication?
A. Needs more bandwidth
B. Is more complex
C. Needs more bandwidth & Is more complex
D. None of the mentioned
Answer: C
Clarification: Digital communication needs more bandwidth, has higher complexity and little performance degradation occurs during analog to digital conversion and vice versa.

5. Examples of digital communication are
A. ISDN
B. Modems
C. Classical telephony
D. All of the mentioned
Answer: D
Clarification: Some of the examples of digital communication systems are classical telephony, ISDN, Modems, LANs, PCM TDM etc.

6. Which system uses digital transmission?
A. ISDN
B. LANs
C. ISDN & LANs
D. None of the mentioned
Answer: C
Clarification: Though the signal type is analog or digital, the transmission takes place in the digital domain in ISDN and LANs.

7. The interval of frequencies outside which the spectrum is zero is called as ________
A. null to null bandwidth
B. normalized bandwidth
C. absolute bandwidth
D. none of the mentioned
Answer:c
Clarification: The measure of frequencies outside which spectrum is zero is called as absolute bandwidth. It is usually infinite.

8. The attenuation level in bounded power spectral density is
A. 35
B. 50
C. 35 & 50
D. none of the mentioned
Answer: C
Clarification: Bounded power spectral density is the bandwidth outside which the spectrum must have fallen to a stated level below that found at the band center.

9. Synchronization available in digital communication are
A. Symbol synchronization
B. Frame synchronization
C. Carrier synchronization
D. All of the mentioned
Answer: D
Clarification: The synchronization techniques available in digital communication are symbol synchronization, frame synchronization and carrier synchronization.

10. Digital system includes
A. Better encryption algorithm
B. Difficult data multiplexing
C. All of the mentioned
D. None of the mentioned
Answer: A
Clarification: Digital system has an advantage of better encryption algorithm, easier data multiplexing and more reliability.

11. Analog to digital conversion includes
A. Sampling
B. Quantization
C. Sampling & Quantization
D. None of the mentioned
Answer: C
Clarification: Analog to digital conversion is a two step process which includes sampling and quantization.