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

Screen resolution

Number of instructions executed per second

Size of ROM

Memory size

2. Which of the following best describes instruction pipelining?

Instruction looping

Overlapping instruction execution

Repeating instructions

Increasing cache size

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

Amount of data processed in a given time

Number of programs running

Speed of monitor refresh

Power consumed by CPU

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

RISC uses microcode

RISC uses complex instructions

CISC supports large and complex instruction sets

CISC uses few instructions

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

CD-ROM

Cache Memory

Slow RAM

Large monitor

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

Control data flow and coordinate CPU operations

Display results

Perform calculations

Store data

7. Which type of memory is volatile?

Hard Disk

RAM

ROM

Cache

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

ROM

Flash Drive

Hard disk

DVD

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

Disk fragmentation

Slow CPU

Parallel processing

Fewer registers

10. Which component is responsible for decoding the instruction?

Cache

RAM

ALU

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

Send signals to the speaker

Display graphics

Control mouse pointer

Communicate with memory and I/O devices

12. Which of the following stores data permanently?

RAM

ROM

Cache

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

Enter data and instructions into the computer

Store files

Perform calculations

Process data

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

Program Counter

Stack Pointer

Instruction Register

Accumulator

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

DVD

RAM

SSD

ROM

16. Which register holds the instruction currently being executed?

Program Counter

Data Register

Stack Pointer

Instruction Register

17. What is a multiprocessor system?

A system with extra RAM

A computer with a large monitor

A system with multiple printers

A computer with two or more processors

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

ALU

Cache

RAM

Control Unit

19. Which of the following is the fastest memory?

DVD

Hard Disk

Cache

RAM

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

Monitor

RAM

CPU

Hard Disk

21. What does RISC stand for?

Reliable Instruction System Control

Random Instruction Storage Chip

Reduced Instruction Set Computer

Read Instruction Sequentially and Continuously

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

Instruction Register

Stack Pointer

Program Counter

Accumulator

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

Cache memory

Main memory

Secondary memory

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

Handling memory access and protection

Managing input devices

Power supply control

Increasing CPU speed

25. What is pipelining in CPU design?

Technique for parallel instruction execution

Memory management technique

Data compression technique

Water-cooling for CPU

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

Store large data

Control system functions

Temporarily store data and instructions

Display data

27. What is a system bus?

Bus connecting external devices

Collection of data, address, and control buses

Bus used in LAN

Bus only for printers

28. Which part of the computer executes instructions?

ROM

Hard Disk

RAM

CPU

29. Which of these determines the instruction execution time?

Monitor refresh rate

Hard disk speed

RAM type

Clock cycle

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

Address bus

System bus

Control bus

Data bus

31. Which component controls the execution of instructions?

ROM

ALU

Control Unit

Cache

32. What is meant by instruction cycle?

The process of converting data to signals

A loop in a program

The time to install an OS

The sequence of steps to fetch and execute instructions

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

Harvard

Von Neumann

RISC

CISC

34. What is the role of the address bus?

Specify memory location to access

Connect CPU to mouse

Carry data from CPU to memory

Carry control signals

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

Fixed-length instructions

Large instruction set

Load/store architecture

Fewer addressing modes

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

CISC

Harvard

Von Neumann

RISC

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

Program Counter

Accumulator

Stack Pointer

Instruction Register

38. Which memory is used to start a computer?

Hard Disk

RAM

Cache

ROM

39. Which unit performs arithmetic and logical operations?

Memory Unit

ALU

Input Unit

Control Unit

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

Cache

CPU

RAM

ROM

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

USB

ROM

Cache

RAM

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

CISC

Von Neumann

Harvard

RISC

43. Which part of the CPU performs comparison operations?

Cache

ALU

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

Subtraction

Logical comparison

Instruction decoding

Addition

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

Cache

DVD

SSD

USB

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

Instruction Set Architecture

Internal System Architecture

Input Signal Arrangement

Integrated Storage Architecture

47. Which of the following describes CISC?

Cache Integrated Set Control

Compressed Instruction System

Common Instruction Storage Chip

Complex Instruction Set Computer

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

Send data to the printer

Store the output

Bring the instruction from memory to CPU

Calculate the answer

49. What is a micro-operation?

Starting the computer

Execution of a large software

Complex arithmetic operation

A basic operation on data stored in a register

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

SSD

Cache Memory

ROM

USB Drive

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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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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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