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‎SIXTH SEMESTER (CUCBCSS—UG) DEGREE EXAMINATION
MARCH 2022

Computer Science
BCS 6B 14—COMPUTER NETWORKS
(2014 to 2016 Admissions)
Time : Three Hours Maximum : 80 Marks

Part A

Answer all questions.

Each question carries 1 mark.
1. WAN stands for ————.
2. How many layers are there is in TCP/IP Reference model ?
3. Expand CSMA/CD.
4. CRC stands for ————.
5 layer in OSI reference model provides accounting, addressing and routing functions.
6. IPv4 addresses have size of ———— bits.
7. ———— TCP/IP protocol is used for transferring files form one machine to another.

8. DNS stands for

9. Expand NIS.
10. The basic objective of the ———— is to store, process and deliver web pages to the users.
(10 x 1 = 10 marks)
Part B

Answer all questions.

Each question carries 2 marks.
11. What is Internet ?
12. What do you mean by Vertical Redundancy Check ?
13. Define the term Gateway.

Turn over

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