CS601 Data Communication Quiz 1 Solved - VU Answer

CS601 Data Communication Quiz 1 Solution Answer

Data Communication Quiz Solved. CS601 Quiz 1 Solution for Help in Studies or Exams and Improve Knowledge or Learning Skills. Also, Get PDF File Given Below.


1. Error correction is more ___ than the error detection.

a) Easy

b) Useless

c) Informal 

d) Difficult

2. ___ is responsible for governing node-to-node communication.

a) Application layer

b) Session layer

c) Data link layer

d) Presentation layer

3. The extra bits added with the original data for error detection/correction are called ___.

a) Fault bits

b) Port numbers

c) Redundant bits

d) Process IDs

4. The ___ is the number of signal elements sent per unit time.

a) Data rate

b) Signal rate

c) Bitrate

d) Period

5. The ___ protocols uses both flow and error control.




d) Stop-and-wait

6. ___ is an Authentication Protocol, which uses two-step process to authenticate user information.


b) LCP

c) PAP


7. In Block coding we divide our message into blocks of k bits called as ____.

a) Codewords

b) Data words

c) Passwords

d) Crosswords

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8. To control and manage the transfer of data, a protocol called Point to Point Protocol (PPP) is used at the ____ layer.

a) Physical

b) Network

c) Presentation

d) Data link

9. ___ is an authentication protocol, which is used by the PPP to authenticate passwords.


b) PAP

c) LCP


10. No matter whether the link is dedicated or broadcast, data link control (DLC) layer provides services between ___.

a) Virtual LANs

b) Tow adjacent nodes

c) Ethernet links

d) Source and destination PCs

11. S-frames in High-Level Data Link Control (HDLC) are only used to transfer ___ information.

a) User data

b) Control

c) Redundant

d) Original

12. Congestion Control is a feature of ___ layer (s).

a) Data Link

b) Network

c) Transport

d) All mentioned

13. ___ is used in the stop-and-wait protocol to overcome the issue of duplication.

a) Frame sequencing

b) Acknowledgement numbering

c) Counter and Timer reset

d) Frame sequencing and Acknowledgement numbering

14. DLC in Data Link Layer stands for ___.

a) Divide Line Communication

b) Data Line Code

c) Data Link Control

d) Demand Link Coordination

15. In even parity check code, the value of syndrome is ___ If the number of 1s is even.

a) 1

b) 2

c) 0

d) 4

16. If the hamming distance between sent and received codeword is ___ then it shows that received data is corrupted.

a) 0

b) = 0

c) 1

d) = 1

17. ___ is not a function of Data Link Control.

a) Framing

b) Modulation

c) Error Control

d) Flow Control

18. Checksum is an error-detection technique that can be required to a message of ___ length.

a) Exactly 4

b) Exactly 8

c) Exactly 32

d) Any

19. ___ category of coaxial cable is used for cable TV.

a) RG-58

b) RG-59

c) RG-11

d) RG-47

20. In circuit-switched networks we have low efficiency but minimal ___.

a) Delay

b) Speed

c) Throughput

d) Errors

21. In ___ systems. Resources are allocated on demand.

a) Frequency switching

b) Line switching

c) Circuit switching

d) Packet switching

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