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Comp 110: Introduction To Computer Science Question Paper

Comp 110: Introduction To Computer Science

Course:Bachelor Of Computer Science

Institution: Kabarak University question papers

Exam Year:2011

COURSE CODE: COMP 110
COURSE TITLE: INTRODUCTION TO COMPUTER SCIENCE
STREAM: Y1S1
DAY: FRIDAY
TIME: 9.00 – 11.00 A.M.
DATE: 18/03/2011

INSTRUCTIONS:
• Section A is compulsory
• Attempt other two questions from Section B

SECTION A (30 Marks)

Question One: (30 Marks):
a) What is a microprocessor? How did it revolutionize the computer industry? (4 Marks)
b) Differentiate between a mainframe system and super computer. (2 Marks)
c) Convert the following: - (6 Marks)
i. (101110)2 = (?)8
ii. (4057)7 = (?)10
iii. (545)6 = (?)4
d) Explain six distinctive features between local area network and wide area network. (6 Marks)
e) Why would an operating system be referred to as a resource manager. (5 Marks)
f) Discuss the advantages and limitation of a multiprocessing system. (6 Marks)

SECTION B: (20 Marks Each)
Question Two: (20 Marks)
a) List out the logical steps taken by a computer system, along with the roles of its main units in
each step, while transforming input data to information for presentation to the user. (5 Marks)
b) Convert the following: - (6 Marks)
i. (2B. C4)16 = (?)10
ii. (1AC) 13 = (?)10
iii. (24)9 = (?)3

c) Differentiate between byte and bit. (1 Mark)
d) List five factors one would consider before choosing any network topology. (5 Marks)
e) Why is a computer system coded using binary number system. (3 Marks)

Question Three: (20 Marks)
b) Solve the following: (6 Marks)
i. Using complementary subtraction: Subtract (216)10 from (172)10
ii. Using complementary subtraction: Subtract (234)10 from (588)10
iii. Using complementary subtraction: Subtract (011011)2 from (110111)2

c) State and prove the idempotent law. (6 Marks)
d) Explain how a cache memory helps in improving the overall processing speed of a computer
system. (3 Marks)
e) Define a computer network. (1 Mark)

Question Four: (20 Marks)
a) Describe three characteristics of data scanning devices and give two examples. (5 Marks)
b) Explain the functions of system software. (4 Marks)
c) Differentiate between the following: (4 Marks)
i. Time sharing and multiprogramming
ii. Firewall and antivirus
d) Suppose you are called upon to install a computer network for an organization list five factors
you would consider? (5 Marks)
e) What is an electronic mail? Why is it preferred by many to paper mail, telephone and fax
services? (2 Marks)

Comp 110: Introduction To Computer Science Question Paper

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