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Introduction To Information Systems Question Paper
Introduction To Information Systems
Course:Bachelor Of Commerce
Institution: Kca University question papers
Exam Year:2010
UNIVERSITY EXAMINATIONS: 2009/2010
FIRST YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF
COMMERCE
CMS 100: INTRODUCTION TO INFORMATION SYSTEMS (Sunday)
DATE: AUGUST 2010 TIME: 2 HOURS
INSTRUCTIONS: Answer question ONE and any other TWO questions
QUESTION ONE
a) List and explain four Components of an information system ( 8 Marks)
b) The term “computer” describes a device made up of a combination of electronic and
electromechanical components. By itself, a computer has no intelligence and is referred to as
hardware which means simply the physical equipment. The hardware cannot be used, until it is
connected to other elements, all of which constitute the six parts-of a computer-based
information system.
Required:
Describe six components of a computer-based information system. (12 Marks)
c) Every PC needs an operating system to provide a platform on which application programscan be
run.
i) Most PCs support multitasking. Define the term multitasking and give an example of its
application. (3 Marks)
ii) More modern PCs support multiprocessing. Explain what is meant by multiprocessing.
(3 Marks)
(Total 30 Marks)
2
Most PC systems use a swap file (virtual memory). Explain what is meant by virtual memory.
(2 Marks)
d) Explain fully the term 2TB. (2 Marks)
QUESTION TWO
a) Perform the following operations
(i) 112+102 (2 Marks)
(ii) 128+ 438 (2 Marks)
(iii)AFC16 +B16 (4 Marks)
(iv) AB16 X C16 (4 Marks)
(v) Convert the following decimal numbers to binary
a) 4910 (2 Marks)
b) 21.687510 (2 Marks)
b) Define the following terms.
i) Absolute error (2 Marks)
ii) Relative error (2 Marks)
(Total 20 Marks)
QUESTION THREE
a) Describe the functional components of a typical computer system. (5 Marks)
b) Differentiate between the following terms:
a. Hardware and software; (1 Mark)
b. Application software and system software; (1 Mark)
c. Bit and byte; (1 Mark)
d. RAM and ROM; (1 Mark)
e. Data and information. (1 Mark)
c) Describe three major factors that affect the performance of a computer operation. For each factor,
state one example of measurement. (6 Marks)
d) Examine the issues to be considered when planning for information systems training. (4 Marks)
3
(Total: 20 Marks)
QUESTION FOUR
a) Briefly describe six functions that all operating systems perform (12 Marks)
b) Explain how multiprogramming operating systems differs from multiprocessing operating systems
(4 Marks)
c) Explain why when purchasing an application software package its necessary to specify which
operating system it will be used with (4 Marks)
(Total 20 Marks)
QUESTION FIVE
a) Give the names of FOUR commonly used exchangeable storage devices. For EACH of these
devices state approximately how much data it can store and give an example of its use. (12 Marks)
b) There are many different types of printer that can be connected to a Personal Computer. Daisy
Wheel and Dot Matrix printers have been almost completely replaced by Inkjet and Laser printers.
i) Explain why the Daisy Wheel and Dot Matrix printers have become less popular.
(2 Marks)
ii) State the factors that might influence the choice between an Inkjet and a Laser printer.
(3 Marks)
iii) Multifunction devices combine the functions of a printer, a scanner, and a Fax. Comment
on the merits (or otherwise) of purchasing a multifunction device rather than three separate
machines. (3 Marks)
(Total 20 Marks)
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