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Computer Organization(Bbit 122) Question Paper

Computer Organization(Bbit 122)

Course:Computer Information Systems And Business Information Technology

Institution: Kenya Methodist University question papers

Exam Year:2010

TIME : 2 HOURS

INSTRUCTIONS Answer Question ONE and any Other TWO Questions

Question 1
a) Differentiate Computer Organization from Computer Architecture. (4marks)
b) Make brief notes on the following
i) Instruction set
ii) CISC
iii) RISC
iv) Pipelining (8marks)
c) What is a computer bus? State THREE types of computer buses and their functions (4marks)
d) Define the following disk performance terms.
i) Access time (2marks)
ii) Seek time (2marks)
iii) Transfer time (2marks)
e) List the steps needed to execute the machine instruction (4marks)
f) Explain how the performance of a computer can be measured (4marks)

Question 2
a) Explain the role of the hard disk storage system in computer system performance and reliability. Describe how the RAID technology may be used for enhancement of reliability, performance or both. (10marks)
b) Discuss the evolution path of computer generations credited with the emergence of the modern generation computers. Be sure to mention the distinguishing features between the different generations. (10marks)

Question 3
a) Describe the distinguishing characteristics of the following memory types and further, explain with justification their possible areas of application (within a typical computer system). Memory types:Convectional DRAM, Fast Page Mode (FPM) DRAM, Extended Data Out (EDO)RAM, Synchronous DRAM (SDRAM), Double Data Rate (DDR) SDRAM, Rambus DRAM (RDRAM). (12marks)
b) Write brief notes on the CISC and RISC processor architecture philosophies. (8marks)

Question 4
a) Outline the various categories of computer instructions (10marks)
b) Convert the decimal numbers –4, -16 and –127 to 8-bit 2’s complement binary form. (6marks)
c) An 8-bit computer will perform the arithmetic operation 28 - 36.What are the steps involved in the subtraction? Why do computers use this technique? (4marks)

Question 5
a) Explain the benefits of using the SCSI disk interface system (as compared to IDE/ATA) for PC-based server systems. (6marks)
b) Discuss the various ways in which the performance of a computer can be effectively enhanced. (14marks)

Computer Organization(Bbit 122) Question Paper

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