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Comp 110: Introduction To Computer Science August 2010 Question Paper

Comp 110: Introduction To Computer Science August 2010

Course:Bachelor Of Computer Science

Institution: Kabarak University question papers

Exam Year:2010

INSTRUCTIONS:
• Attempt to answer Three questions.
• Section A is compulsory.
• Answer any other two questions from Section B.

SECTION A
Question One: (30 Marks)
a) Explain at least three different ways in which computers can be categorized. (3 Marks)
b) Identify and explain four categories of computer hardware. (2 Marks)
c) Explain the functionality of a bar code reader. (2 Marks)
d) Convert the following into their respective number system: (6 Marks)
i. (110.101)2 = (?)10
ii. (101110)2 = (?)8
iii. (545)6 = (?)4
e) Solve the following: - (4 Marks)
i. Subtract (0111000)2 from (1011100)2 using complementary method
ii. Multiply (1111)2 and (111)2
f) Construct a logic circuit for the following Boolean expression: (4 Marks)
( ) . (x + z). (y + z)
g) Differentiate between the following:- (3 Marks)
i. Impact printer and non-impact printer
ii. Data and program
iii. Worksheet and spreadsheet
h) What are the different methods one can connect to the internet? Explain their suitability.
(3 Marks)
i) Why would you install system software in a computer? (3 Marks)

SECTION-B
Question Two: (20 Marks)
a) Mention at least four outstanding features of third generation over the second generation
computers. (4 Marks)
b) Explain the two basic web-based search tools. (4 Marks)
c) Why do computers use binary number system? (4 Marks)
d) List four advantages of magnetic disks over magnetic tapes (4 Marks)
e) Explain the role of an operating system as a resource manager of a computer system.
(4 Marks)

Question Three: (20 Marks)
a) List and explain four important parts that make up a computer system. (4 Marks)
b) Explain four features of word processing which are helpful in document preparation.
(4 Marks)
c) Prove the following: (4 Marks)
i. x. = x.y
ii. x + . y = x + y
d) Briefly explain four types of physical layouts of network components. (4 Marks)

Comp 110: Introduction To Computer Science August 2010 Question Paper

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