How to login to NOUN Elearn Portal
You can now use you matric number to login as your username and password in a lowercase.
https://elearn.nouedu2.net/login/
Note that you are to change your passw...
NATIONAL OPEN UNIVERSITY OF NIGERIA
UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
MARCH/APRIL 2015 EXAMINATION
COURSE CODE: CIT 309
COURSE TITLE: COMPUTER ARCHITECTURE
TIME: 3 HOURS
INSTRUCTION: ANSWER ANY FOUR (4) QUESTIONS
1a. Explain what is meant by Dual core processor chip. [3.5 marks]
1b. Enumerate and explain the four (4) common characteristics of Reduced Instruction Set architectures. [14 marks]
2a. Write short note on Loop unrolling compiler technique. [21/2marks]
2b. Highlight the features and functionality of a multi programming system to accommodate multiple processor. [5 marks)
2c. Define the following:
- L2 cache 2.5marks
- System control element (SCE) 2.5 marks
- Main store control (MSC) 2.5 marks
- Memory card 2.5 marks
3a. Differentiate between Thread and Process 5.5 marks
3b. List and discuss four (4) basic functions that a computer can perform 12 marks
4a. Write short note on program creation and access to Input/output devices services of Operating System 4.5marks
4b. Discuss how the A.L.U is interconnected with the rest of the processor. 5 marks
4c. Define the following: 8 marks
i. Processors instruction 4 marks
ii. Instruction 4 marks
5a. Write short note on Ready Running, Waiting and Halted states of process. 4 marks
5b. Briefly state how the 2s complement operation can be perform on the given integer numbers. 51/2 marks
5c. Define the following acronym: 8 marks
i. MAR
ii. MER
iii. IR
iv. PC
v. Interrupt
vi. Timer
6a. Enumerate three (3) ways in which Loop unrolling can improve the performance. 3 marks
6b. Differentiate between the Process and Thread switch. 4.5 marks
6c. Explain the following:
- Clock 5 marks
- Flags 5 marks
