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Computer Organization And Architecture Question Paper
Computer Organization And Architecture
Course:Diploma In Information Technology
Institution: Bungoma Technical Training Institute question papers
Exam Year:2010
STAGE I EXAMINATION FOR DIPLOMA IN INFORMATION
TECHNOLOGY
DIT 104: COMPUTER ORGANIZATION AND ARCHITECTURE
DATE: APRIL 2010 TIME: 1½HOURS
INSTRUCTIONS: Answer any THREE questions
Question one [20 marks]
a) Define the following terms
i. Garbage –in – garbage - out
ii. Software
iii. Device drivers
iv. byte
v.Computer system (5 Marks)
b) What were the advantages of transistors over vacuum tubes (2 Marks)
c) What is a “computer generation”? Explain the first three computer generations (6 Marks)
d) State SIX functions of the operating system ( 6 Marks)
e) Explain the use of optical character recognition(OCR) (1 Mark)
Question two [20 marks]
a) Convert the following from binary to decimal
i. 110012
ii. 110.11012 (4 Marks)
b) Find the decimal equivalent of the Hexadecimal number directly
i. 2B.C416
2
ii. A2B.D416 (6 Marks)
c) Divide the following binary numbers
i. 1000012 by 1102
ii. 110012 by 1012 (4 Marks)
d) Write the following abbreviations in full
i. EBCDIC
ii.ASCII (2 Marks)
e) Discuss the four features of a user friendly software (4 Marks)
Question three [20 marks]
a)What is data? (1 Mark)
b) Define the following
i. Bit
ii. Database
iii.Record (3 Marks)
c) Data organization is one of the most critical functions of a computer system. Discuss two types
of data organization (4 Marks)
d) Describe the following types of files
i. Back up file
ii. Master file
iii. Output file
iv.Transaction file (4 Marks)
e)State Moore’s Law (2 Marks)
f) Distinguish between a compiler and interpreter (4 Marks)
g) Distinguish between indexed sequential and Random access file organization ( 2 Marks)
Question four (20 Marks)
a) Explain, with the aid of diagrams, THREE network topologies. (12 Marks)
b) Networked communications in business may occur through wide area networks (WANS) and/or
local area networks (LANS). Explain how the TWO types of networks differ. ( 8 Marks)
3
Question Five (20 Marks)
a) i) The monitor is described as 19 inch. Which dimension of the monitor is 19 inches? (2 Marks)
ii) Explain what is meant by the phrase “resolution 1280x1024”. (2 Marks)
iii) Give a reason why TFT or other flat panel monitors have replaced CRT monitors. (2 Marks)
b)i) Explain what a router is. ( 4 Marks)
ii) What is a firewall? (2 Marks)
iii) What does the phrase “full duplex” mean? (2 Marks)
iv) What is a USB port? (2 Marks)
c) State FOUR advantages of acquiring an off-the –shelf software? (4 Marks)
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