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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 controls the flow of data in a CPU?

RAM

Cache

Control Unit

ALU

2. Which memory is used to start a computer?

Hard Disk

Cache

RAM

ROM

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

Instruction decoding

Addition

Logical comparison

Subtraction

4. What is a multiprocessor system?

A system with multiple printers

A computer with a large monitor

A system with extra RAM

A computer with two or more processors

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

Power supply control

Handling memory access and protection

Managing input devices

Increasing CPU speed

6. Which of the following is the fastest memory?

DVD

Hard Disk

Cache

RAM

7. Which component controls the execution of instructions?

ALU

Cache

ROM

Control Unit

8. What is meant by instruction cycle?

A loop in a program

The time to install an OS

The sequence of steps to fetch and execute instructions

The process of converting data to signals

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

Cache memory

Main memory

Secondary memory

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

Cache Memory

USB Drive

ROM

SSD

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

Store files

Process data

Enter data and instructions into the computer

Perform calculations

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

Von Neumann

Harvard

CISC

RISC

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

Fewer addressing modes

Fixed-length instructions

Large instruction set

Load/store architecture

14. Which of the following stores data permanently?

ROM

Cache

RAM

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

ROM

Cache

RAM

CPU

16. What is pipelining in CPU design?

Water-cooling for CPU

Memory management technique

Technique for parallel instruction execution

Data compression technique

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

Control mouse pointer

Display graphics

Communicate with memory and I/O devices

Send signals to the speaker

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

RAM

ROM

Cache

USB

19. What is a micro-operation?

Execution of a large software

Starting the computer

A basic operation on data stored in a register

Complex arithmetic operation

20. What is a system bus?

Bus connecting external devices

Collection of data, address, and control buses

Bus used in LAN

Bus only for printers

21. Which of the following describes CISC?

Compressed Instruction System

Cache Integrated Set Control

Common Instruction Storage Chip

Complex Instruction Set Computer

22. Which part of the CPU performs comparison operations?

ALU

Cache

23. Which register holds the instruction currently being executed?

Instruction Register

Stack Pointer

Data Register

Program Counter

24. What does RISC stand for?

Random Instruction Storage Chip

Reduced Instruction Set Computer

Reliable Instruction System Control

Read Instruction Sequentially and Continuously

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

Cache

DVD

SSD

USB

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26. Which unit performs arithmetic and logical operations?

Control Unit

ALU

Memory Unit

Input Unit

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

Store large data

Control system functions

Display data

Temporarily store data and instructions

28. Which of the following best describes instruction pipelining?

Overlapping instruction execution

Repeating instructions

Instruction looping

Increasing cache size

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

CISC uses few instructions

RISC uses complex instructions

CISC supports large and complex instruction sets

RISC uses microcode

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

DVD

Hard disk

ROM

Flash Drive

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

Instruction Register

Program Counter

Stack Pointer

Accumulator

32. Which component is responsible for decoding the instruction?

RAM

ALU

Cache

33. What is the role of the address bus?

Carry data from CPU to memory

Carry control signals

Specify memory location to access

Connect CPU to mouse

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

Large monitor

CD-ROM

Slow RAM

Cache Memory

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

Number of programs running

Speed of monitor refresh

Amount of data processed in a given time

Power consumed by CPU

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

Store data

Display results

Perform calculations

Control data flow and coordinate CPU operations

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

Input Signal Arrangement

Internal System Architecture

Integrated Storage Architecture

Instruction Set Architecture

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

RAM

Monitor

Hard Disk

CPU

39. Which part of the computer executes instructions?

RAM

CPU

Hard Disk

ROM

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

Parallel processing

Fewer registers

Disk fragmentation

Slow CPU

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

Number of instructions executed per second

Memory size

Size of ROM

Screen resolution

42. Which of these determines the instruction execution time?

Hard disk speed

Clock cycle

Monitor refresh rate

RAM type

43. Which type of memory is volatile?

RAM

ROM

Cache

Hard Disk

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

ROM

SSD

RAM

DVD

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

Instruction Register

Stack Pointer

Accumulator

Program Counter

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

Instruction Register

Accumulator

Stack Pointer

Program Counter

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

RISC

Von Neumann

CISC

Harvard

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

Send data to the printer

Bring the instruction from memory to CPU

Store the output

Calculate the answer

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

Control bus

Address bus

Data bus

System bus

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

CISC

Harvard

RISC

Von Neumann

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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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Mustansar Khan

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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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Mustansar Khan

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