NIELIT A Level Solved Paper January-2012

January, 2012

A9-R4: DATA COMMUNICATION & NETWORK TECHNOLOGIES

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)
1.1 A protocol is a set of rules governing a time sequence of events that must take place
A) between an interface
B) between modems
C) between peers
D) across an interface
1.2 Which of the following communications lines is best suited for interactive processing of
applications?
A) full duplex lines
B) narrow band channel
C) simplex lines
D) mixed band channels

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