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ECAT Computer Science Computer Architecture Test Online

Mustansar KhanLast Updated: May 1, 2025

ECAT Computer Science Computer Architecture Test

ECAT Computer Science Chapter 5 Computer Architecture Online Test

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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ECAT Computer Architecture Test Online MCQs

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

Large monitor

Cache Memory

Slow RAM

CD-ROM

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

Power consumed by CPU

Speed of monitor refresh

Number of programs running

Amount of data processed in a given time

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

RISC uses complex instructions

CISC uses few instructions

RISC uses microcode

CISC supports large and complex instruction sets

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

ROM

Cache

RAM

USB

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

Fixed-length instructions

Large instruction set

Load/store architecture

Fewer addressing modes

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

Store data

Control data flow and coordinate CPU operations

Perform calculations

Display results

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

Stack Pointer

Accumulator

Program Counter

Instruction Register

8. Which of the following describes CISC?

Compressed Instruction System

Common Instruction Storage Chip

Complex Instruction Set Computer

Cache Integrated Set Control

9. What is a multiprocessor system?

A system with extra RAM

A system with multiple printers

A computer with two or more processors

A computer with a large monitor

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

Power supply control

Increasing CPU speed

Handling memory access and protection

Managing input devices

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

Control system functions

Store large data

Display data

Temporarily store data and instructions

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

Cache memory

Main memory

Secondary memory

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

Integrated Storage Architecture

Internal System Architecture

Input Signal Arrangement

Instruction Set Architecture

14. Which unit performs arithmetic and logical operations?

Input Unit

ALU

Memory Unit

Control Unit

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

Address bus

System bus

Control bus

Data bus

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

ROM

Cache Memory

USB Drive

SSD

17. What is pipelining in CPU design?

Data compression technique

Memory management technique

Technique for parallel instruction execution

Water-cooling for CPU

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

ALU

RAM

Cache

Control Unit

19. What is meant by instruction cycle?

The time to install an OS

The process of converting data to signals

A loop in a program

The sequence of steps to fetch and execute instructions

20. Which of the following is the fastest memory?

DVD

Cache

Hard Disk

RAM

21. Which part of the CPU performs comparison operations?

Cache

ALU

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

Communicate with memory and I/O devices

Display graphics

Send signals to the speaker

Control mouse pointer

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

Addition

Logical comparison

Subtraction

Instruction decoding

24. What does RISC stand for?

Read Instruction Sequentially and Continuously

Random Instruction Storage Chip

Reliable Instruction System Control

Reduced Instruction Set Computer

25. Which register holds the instruction currently being executed?

Data Register

Instruction Register

Program Counter

Stack Pointer

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

DVD

SSD

USB

Cache

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

ROM

DVD

SSD

RAM

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

Harvard

CISC

Von Neumann

RISC

29. Which component controls the execution of instructions?

ROM

Cache

Control Unit

ALU

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

Number of instructions executed per second

Memory size

Screen resolution

Size of ROM

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

CPU

Hard Disk

Monitor

RAM

32. Which of the following stores data permanently?

Cache

RAM

ROM

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

Hard disk

DVD

ROM

Flash Drive

34. Which of these determines the instruction execution time?

Clock cycle

RAM type

Hard disk speed

Monitor refresh rate

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

Send data to the printer

Bring the instruction from memory to CPU

Calculate the answer

Store the output

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

RAM

Cache

CPU

ROM

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

Stack Pointer

Accumulator

Program Counter

Instruction Register

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

Program Counter

Instruction Register

Accumulator

Stack Pointer

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

Slow CPU

Fewer registers

Parallel processing

Disk fragmentation

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

CISC

Harvard

RISC

Von Neumann

41. Which of the following best describes instruction pipelining?

Overlapping instruction execution

Instruction looping

Repeating instructions

Increasing cache size

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

Harvard

CISC

RISC

Von Neumann

43. Which part of the computer executes instructions?

CPU

Hard Disk

ROM

RAM

44. Which memory is used to start a computer?

RAM

Hard Disk

ROM

Cache

45. Which component is responsible for decoding the instruction?

ALU

Cache

RAM

46. What is the role of the address bus?

Carry control signals

Connect CPU to mouse

Specify memory location to access

Carry data from CPU to memory

47. What is a system bus?

Bus used in LAN

Bus connecting external devices

Collection of data, address, and control buses

Bus only for printers

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

Process data

Perform calculations

Store files

Enter data and instructions into the computer

49. Which type of memory is volatile?

Hard Disk

RAM

ROM

Cache

50. 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

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Mustansar KhanLast Updated: May 1, 2025

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ECAT Computer Science Computer Architecture Test Online

ECAT Computer Science Computer Architecture Test

ECAT Computer Science Chapter 5 Computer Architecture Online Test

ECAT Computer Architecture Test Online MCQs

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