CIT309 : COMPUTER ARCHITECTURE (2014)

NATIONAL OPEN UNIVERSITY OF NIGERIA

14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS

SCHOOL OF SCIENCE AND TECHNOLOGY

MARCH/APRIL 2014 EXAMINATION

COURSE CODE: CIT 309

COURSE TITLE: COMPUTER ARCHITECTURE

TIME ALLOWED: 3 HOURS

INSTRUCTION: ANSWER ANY FOUR QUESTIONS IN ALL

1a. Explain the following:

i. Clock. [4
marks]

ii. Flags [4.5
marks]

1b. List and briefly explain the four (4) characteristics of Reduced Instruction Set architecture. [9
marks]

2a. Give 4 examples of shorter subcycles/operation that made up of instruction cycle. [5
marks]

2b. List and briefly explain the four (4) types of parallel processor system. [17.5 marks]

3a. Write short note on the simultaneous execution of the action: Read word from memory and Increment PC. [7¹/₂ marks]

3b. Using the Instruction: ADD, R, Y to explain the following:

i. ADD, R, Y

ii. Y

iii. R [10
marks]

4a. Highlight the features and functionality of a multi programming system to accommodate multiple processor. [7¹/₂ marks]

4b. Define the following:

i. Data types. [2 marks]

ii. processors instruction. [4 marks]

iii. Instruction. [4 marks]

5a. List and discuss four (4) basic functions that a computer can perform. [7.5 marks]

5b. Define the following:

i. Dual core processor chip. [2 marks]

ii. L2 cache. [2 marks]

iii. System control element (SCE). [2 marks]

iv. Main store control (MSC). [2 marks]

v. Memory card. [2 marks]

6a. Explain what is meant by Micro-operation? [7¹/₂marks]

6b. When does the Overflow rule occur? [10 marks]

For the 2015 – till date past questions for this course CLICK HERE

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