Computer Architecture Test Online

Mustansar KhanLast Updated: October 15, 2025

Important Computer Architecture Question and Answer

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	ECAT Entry Test Computer Online Test Interview Questions about Computer All Universities Entrance Test Recruitments Tests

Computer Architecture Practice Test Online With Explanation

Please wait...

Page 1 of 2

Uncategorized

1. What is pipelining in CPU design?

Technique for parallel instruction execution

Water-cooling for CPU

Data compression technique

Memory management technique

2. Which of the following controls the flow of data in a CPU?

Cache

Control Unit

ALU

RAM

3. What is the main function of registers in a CPU?

Display data

Control system functions

Temporarily store data and instructions

Store large data

4. Which architecture uses a single memory for instructions and data?

Harvard

RISC

Von Neumann

CISC

5. Which of the following best describes instruction pipelining?

Overlapping instruction execution

Repeating instructions

Increasing cache size

Instruction looping

6. Which register holds the instruction currently being executed?

Instruction Register

Data Register

Stack Pointer

Program Counter

7. Which of the following stores data permanently?

Cache

RAM

ROM

8. What is meant by instruction cycle?

The sequence of steps to fetch and execute instructions

The process of converting data to signals

The time to install an OS

A loop in a program

9. What is a system bus?

Collection of data, address, and control buses

Bus only for printers

Bus connecting external devices

Bus used in LAN

10. Which bus is used to carry data between components?

Data bus

Address bus

Control bus

System bus

11. Which architecture uses load/store instructions to access memory?

RISC

CISC

Von Neumann

Harvard

12. What does the term 'throughput' mean in computer architecture?

Number of programs running

Power consumed by CPU

Amount of data processed in a given time

Speed of monitor refresh

13. Which unit performs arithmetic and logical operations?

ALU

Memory Unit

Control Unit

Input Unit

14. Which component controls the execution of instructions?

Control Unit

ROM

Cache

ALU

15. What is a multiprocessor system?

A system with multiple printers

A system with extra RAM

A computer with two or more processors

A computer with a large monitor

16. Which of the following operations is not performed by the ALU?

Instruction decoding

Addition

Logical comparison

Subtraction

17. What is the function of the bus interface unit in CPU architecture?

Communicate with memory and I/O devices

Display graphics

Control mouse pointer

Send signals to the speaker

18. Which of these determines the instruction execution time?

Hard disk speed

Clock cycle

Monitor refresh rate

RAM type

19. Which register is used to manage subroutine calls and returns?

Stack Pointer

Accumulator

Program Counter

Instruction Register

20. Which part of the computer executes instructions?

Hard Disk

CPU

RAM

ROM

21. What is the function of the memory management unit (MMU)?

Handling memory access and protection

Managing input devices

Power supply control

Increasing CPU speed

22. Which of the following is not a characteristic of RISC architecture?

Load/store architecture

Fixed-length instructions

Fewer addressing modes

Large instruction set

23. Which of the following components is used for temporary, high-speed data storage?

USB

Cache

SSD

DVD

24. Which of these terms refers to storing frequently used instructions?

RAM

CPU

Cache

ROM

25. Which of the following architectures separates data and instruction memory?

RISC

Von Neumann

Harvard

CISC

Page 2 of 2

26. Which memory is used to start a computer?

Cache

RAM

Hard Disk

ROM

27. Which of the following is an example of primary memory?

ROM

Hard disk

Flash Drive

DVD

28. Which of the following is used to increase processing speed?

Parallel processing

Slow CPU

Disk fragmentation

Fewer registers

29. Which of the following is used to increase the performance of the CPU?

Slow RAM

Cache Memory

CD-ROM

Large monitor

30. Which component is responsible for decoding the instruction?

RAM

ALU

Cache

31. Which memory stores data temporarily and is erased when power is off?

RAM

ROM

SSD

DVD

32. Which type of memory is volatile?

Hard Disk

Cache

ROM

RAM

33. Which of the following is the fastest memory?

Hard Disk

RAM

DVD

Cache

34. What does 'fetch' mean in the instruction cycle?

Calculate the answer

Send data to the printer

Bring the instruction from memory to CPU

Store the output

35. Which part of the CPU performs comparison operations?

ALU

Cache

36. What is the main role of the input unit in computer architecture?

Perform calculations

Process data

Store files

Enter data and instructions into the computer

37. What does the acronym 'ISA' stand for in computer architecture?

Internal System Architecture

Input Signal Arrangement

Instruction Set Architecture

Integrated Storage Architecture

38. Which of the following is called the brain of the computer?

Monitor

Hard Disk

RAM

CPU

39. What is the key difference between CISC and RISC?

CISC uses few instructions

CISC supports large and complex instruction sets

RISC uses microcode

RISC uses complex instructions

40. Which of the following describes CISC?

Compressed Instruction System

Complex Instruction Set Computer

Common Instruction Storage Chip

Cache Integrated Set Control

41. What is the role of the address bus?

Specify memory location to access

Carry control signals

Carry data from CPU to memory

Connect CPU to mouse

42. Which of the following is used to reduce the CPU's time waiting for data?

ROM

SSD

USB Drive

Cache Memory

43. Which register is used for arithmetic and logic operations?

Accumulator

Instruction Register

Program Counter

Stack Pointer

44. Which of the following memory types is the smallest and fastest?

Main memory

Cache memory

Secondary memory

45. What is the function of the Control Unit in the CPU?

Control data flow and coordinate CPU operations

Display results

Perform calculations

Store data

46. What is a micro-operation?

Complex arithmetic operation

Execution of a large software

A basic operation on data stored in a register

Starting the computer

47. What does RISC stand for?

Reduced Instruction Set Computer

Reliable Instruction System Control

Read Instruction Sequentially and Continuously

Random Instruction Storage Chip

48. Which register holds the address of the next instruction to be executed?

Accumulator

Stack Pointer

Program Counter

Instruction Register

49. Which of the following is not a type of computer memory?

ROM

RAM

USB

Cache

50. What does the term ‘clock speed’ of a processor indicate?

Number of instructions executed per second

Size of ROM

Memory size

Screen resolution

More Related Resources

11th Class Computer Science Chapter... Best Computer Courses List in Pakis... 9th Computer Guess Paper 2026 Onlin... PPSC Syllabus for Computer Science ... 11th Class Computer Science Chapter... KPK 11th Class Computer Chapter 5 N... KPK 11th Class Computer Chapter 3 C... FBISE 9th Class Computer Chapter 5 ... NFC IET Entry Test 2026 Preparation... UET Lahore, Taxila ECAT Computer Sc...

Can't find what you're looking for? Search below:

Latest Updates

Best Computer Courses List in Pakistan
9th Computer Guess Paper 2026 Online Download PDF
PPSC Syllabus for Computer Science Lecturer 2026 Sample Test Patt...
NFC IET Entry Test 2026 Preparation Online MCQS Test English Math...
UET Lahore, Taxila ECAT Computer Science Entry Test Online Prepar...
Scope of ICS in Pakistan Job Opportunities Salary and Best Fields

Mustansar KhanLast Updated: October 15, 2025

Important Computer Architecture Question and Answer

Computer Architecture Practice Test Online With Explanation

Uncategorized

More Related Resources

Latest Updates

Mustansar Khan

Leave a Reply Cancel reply