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Introduction To Computer Science Question Paper

Introduction To Computer Science

Course:Bachelor Of Computer Science (It Telecommunication)

Institution: Kabarak University question papers

Exam Year:2010

Page 1 of 3
KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2010/2011 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF COMPUTER SCIENCE
AND BACHELOR OF SCIENCE IN ECONOMICS
COURSE CODE: COMP 110
COURSE TITLE: INTRODUCTION TO COMPUTER
SCIENCE
STREAM: Y1S1
DAY: FRIDAY
TIME: 9.00 – 11.00 A.M
DATE: 10/12/2010
INSTRUCTIONS:
• Section A is compulsory
• Attempt other two questions from Section B
PLEASE TURNOVER
Page 2 of 3
SECTION A (30 Marks)
QUESTION ONE: (30 MARKS)
a) How is a computer important to the government? (5 Marks)
b) What is an integrated circuit? List three benefits of an IC over a transistor. (5 Marks)
c) Convert the following: - (6 Marks)
i. (4706)8 = (?)10
ii. (11001)4 = (?)10
iii. (545)6 = (?)4
d) Why have computers designed to use binary number system? (3 Marks)
e) Explain the duality principle. (4 Marks)
f) What is a cache memory? How does it differ with the primary memory? (5 Marks)
g) List out four main uses of magnetic tapes. (2 Marks)
SECTION B: (20 Marks each)
QUESTION TWO: (20 MARKS)
a) Solve the following: - (6 Marks)
i. Using complementary method subtract (100011)2 from (010010)2
ii. Using complementary method subtract (0111000)2 from(1011100)2
iii. Multiply (1010)2 and (1001)2
b) Construct a logic circuit for the Boolean expression below: (6 Marks)
. + . + .
c) What is an OCR device? List out its main limitations. (4 Marks)
d) What is a utility program? Explain three tasks commonly performed by utility software.
(4 Marks)
QUESTION THREE: (20 MARKS)
a) Briefly explain the five common functions of an operating system. (5 Marks)
b) Define the following terms: - (5 Marks)
i. Track
ii. Turn round time
iii. Topology
iv. Computer network
v. modem
c) Using the method of perfect induction proof: (5 Marks)

.
+
=
.

d) List out five hardware and software requirements for time sharing system. (5 Marks)
Page 3 of 3
QUESTION FOUR: (20 MARKS)
a) Differentiate between the transistor and the integrated Circuit technology. (3 Marks)
b) What is meant by the word – wrap feature in word processing? Explain its importance.
(4 Marks)
c) Why is digital transmission preferred to analog transmission for digital data? (4 Marks)
d) List four benefits of circuit switching. (4 Marks)
e) Explain five main features which differentiate the types of network. (5 Marks)

Introduction To Computer Science Question Paper

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