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Cop 102: Computer Architecture Question Paper
Cop 102: Computer Architecture
Course:Bachelor Of Science In Computer Science
Institution: The Presbyterian University Of East Africa question papers
Exam Year:2017
INSTRUCTIONS:
a) Read the instructions on ANSWER BOOKLET carefully:
b) Answer Question ONE and any other TWO Questions
c) Time allowed is TWO hours
QUESTION ONE (30 MARKS)
a) Define the following terms as used in computer architecture (8 marks)
i. Cache
ii. Assembly language
iii. Memory hierarchy
iv. Addressing mode
b) Using a well labelled diagram, briefly describe the Von Neumann Architecture (6 marks)
c) Compare and contrast computer architecture and computer organization. (6 marks)
d) Explain the structure of a machine language instruction (5 marks)
e) How does the control unit execute instructions? (5 marks)
QUESTION TWO (15 MARKS)
a) What are the main characteristics of RISC Processors? (4 marks)
b) Describe the meaning of the following lines of code: (5 marks)
load R1, MEM(y);
load R2, MEM(z);
add R1, R2;
store R1, MEM(x);
c) State and explain the limitations of the I/O subsystem (6 marks)
QUESTION THREE (15 MARKS)
a) What is CISC? Name two CISC processors. (4 marks)
b) Discuss the five levels of the memory Hierarchy (5 marks)
c) Briefly explain the instruction types found in the instruction set. (6 marks)
QUESTION FOUR (15 MARKS)
a) State and explain any 5 addressing modes. (5 marks)
b) Before we can execute a program, we must convert the assembly to machine code. The assembler does this translation. Describe the process of translation. (7 marks)
c) List the functions of the Arithmetic and Logic Unit. (3 marks
QUESTION FIVE (15 MARKS)
a) Define the following terms (5 marks)
i. Low Order byte
ii. Byte Addressable memory
b) Briefly describe the memory subsystem (6 marks)
c) What is an instruction set? Explain using examples. (4 marks)
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