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SIXTH SEMESTER B.Sc. DEGREE EXAMINATION, MARCH 2017
(CUCBCSS—UG)
Computer Science

BCS 6B 14—COMPUTER NETWORKS

(Pages : 2) ‏.رک‎ 777

Time : Three Hours Maximum : 80 Marks
I. Answer ail questions :
1 ———— is the connection oriented, reliable transport protocol.

2 OSI layer defines the standards for data formats and encryption
3 The set of rules a computer must follow on a network is called
4

The physical components ,organization and configuration of a network is known as
its

a

The minimum number of wires needed to send data over a serial communication layer
is

A technique called —-——— is used to improve the efficiency of bidirectional protocols.
transport electromagnetic waves without using a physical conductor. .
Error detection is usually done in the ———— layer of OSI model.

oon oO

is the most widely used local area network protocol.
10 ———— media is used for broadband local network.
(10 x 1 = 10 marks)
II. Answer all questions : ;
11 What is piggybacking ?
12 What are the two types of switches used in circuit switching ?
13 Explain Bluetooth technology.
14 What are transposition ciphers ?
15 What is a peer to peer process ?
(5 x 2 = 10 marks)
111. Answer any five questions :
16 Explain Cryptography.
17 Describe Domain Name Systems.

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