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Sma 2174: Introduction To Computer Systems Question Paper

Sma 2174: Introduction To Computer Systems

Course:Bachelor Of Science In Telecommunication

Institution: Dedan Kimathi University Of Technology question papers

Exam Year:2010

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KIMATHI UNIVERSITY COLLEGE OF TECHNOLOGY
University Examinations 2010/2011
FIRST YEAR SPECIAL SUPPLEMENTARY SEMESTER EXAMINATION FOR BACHELOR OF SCIENCE IN TELECOMMUNICATION & INFORMATION ENGINEERING
SMA 2174: INTRODUCTION TO COMPUTER SYSTEMS
DATE: 9TH NOVEMBER 2010 TIME: 8.30 – 10.30 AM
Instructions: Answer Question One and any other Two Questions
Question one
I. Define the term computer and discuss any of its three positive and negative effects in the society (7 marks)
II. Differentiate between a:
a. Hardware and a software
b. Bit and a byte (4 marks)
III. How many bytes are in a:
a. Kb (kilobyte)
b. Mb (megabyte)
c. Gb (gigabyte)
d. Tb (terabyte) (4 marks)
IV. As a computer lab technician in an organization, note down any ten safety precautions and practices to be respected in the information systems department to avoid accidents and to enhance smooth running of computers. (5 marks)
a) Convert the following decimal numbers into hexadecimal numbers. Show your calculations.
i. 454
ii. 32
iii. 677 (6 marks)
b) Define the term Virus in the context of computers and describe any TWO examples of Viruses (2 marks)
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Question two
I With an aid of a neat block diagram, discuss the four general operations accomplished by a computer while processing data into information (10 marks)
II List the four classifications of computers and give an example in each case (10marks)
Question three
I. Distinguish between sequential-access secondary storage and direct-access secondary storage and give an example in each case. (4 marks)
II. What is a magnetic tape (1 mark)
III. Explain how information is recorded on a magnetic tape (6 marks)
IV. Mention any two advantages and disadvantages of a magnetic tape (4 marks)
Question Four
I. Write down the two types of primary memory (2 marks)
II. Critically Differentiate the two types of software (5 marks)
III. Describe the uses of an operating system (8 marks)
Question Five
(a) Explain three major factors that determine choice of any storage media in a computer (6 marks)
(b) How is data stored in a magnetic tape (3 marks)
(c) State two advantages of a magnetic tape (2 marks)
(d) State four advantages of a hard disk over a floppy disk. (4 marks)

Sma 2174: Introduction To Computer Systems Question Paper

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