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Sct206: Computer Architecture Question Paper

Sct206: Computer Architecture

Course:Computer Engineering

Institution: Kenyatta University question papers

Exam Year:2012

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2011/2012
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE COMPUTER ENGINEERING
SCT206: COMPUTER ARCHITECTURE

DATE: WEDNESDAY, 11TH APRIL 2012 TIME: 2.00 P.M. – 4.00 P.M.

Instruction:
ANSWER, QUESTION ONE(1) AND ANY OTHER TWO (2) QUESTIONS.
QUESTION ONE
(a)
Explain the pipeline Stalling process. [2 marks]
(b) What is catch Memory. [2 marks]
(c) Describe the function of Cu(control unit). [3 marks]
(d) What are the basic operations of computer. [2 marks]
(e)
What are the steps of executing Programs. [3 marks]
(f)
Draw all the dependencies of Data dependency graph. [4 marks]
(g) Describe the Bus and all System Buses. [4 marks]
(h) What is System software .give an example [2 marks]
(i) Differentiate between the following
1. Multitasking and Multiprocessing
2. Simd and Mimd
3. Assembler and loader
4. General purpose register and Stack register [8 marks]

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QUESTION TWO

(a)
Explain the main idea behind DMA

[4 marks]
(b)
Clearly explain the hierarchical organization of the computer’s memory in terms of increasing

capacity and speed.
[8 marks]
(c )
Suppose that we have two implementations of 10,000 instruction set on each machine.
Machine A has a clock cycle time of 50 s and a CPI of 4.0 for some program, and machine B
has a clock cycle of 65 s and a CPI of 2.5 for the same program. Which machine is faster and
by how much?

[8 marks]
QUESTION THREE
(a)
With the help of a well-labeled diagram describe basic organization of the VON NEUMANN
machine.

[8 marks]
(b)
Draw a diagram showing Micro programmed computer Hardware configuration. [8 marks]
(c)
Describe the CPU registers. [4 marks]

QUESTION FOUR
(a)
(i)
What is the difference between Microprocessor and Micro program?
(ii)
Is it possible to design a microprocessors without a micro program?
(iii)
Are all micro programmed computers also microprocessors?

[6 marks]
(b)
Define Addressing mode .classify addressing mode and explain each type with example.

[8 marks]
(c )
Discuss the concept of memory Interleaving and give its advantage. [6 marks]

QUESTION FIVE
(a)
Describe the any four Parallel Programming model [8 marks]
(b)
Describe the Language Features of Parallelism. [6 marks]
(c)
Draw a diagram showing the Four stage Pipelining (Software and Hardware Approach)

execution.

[6 marks]

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Sct206: Computer Architecture Question Paper

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