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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 called the brain of the computer?

Hard Disk

Monitor

RAM

CPU

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

Instruction decoding

Addition

Logical comparison

Subtraction

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

Slow RAM

CD-ROM

Cache Memory

Large monitor

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

Temporarily store data and instructions

Store large data

Control system functions

Display data

5. Which register holds the instruction currently being executed?

Instruction Register

Stack Pointer

Data Register

Program Counter

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

DVD

Hard disk

ROM

Flash Drive

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

Size of ROM

Number of instructions executed per second

Screen resolution

Memory size

8. Which of the following best describes instruction pipelining?

Overlapping instruction execution

Instruction looping

Increasing cache size

Repeating instructions

9. What is a micro-operation?

Complex arithmetic operation

Starting the computer

A basic operation on data stored in a register

Execution of a large software

10. Which memory is used to start a computer?

RAM

Hard Disk

Cache

ROM

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

Input Signal Arrangement

Instruction Set Architecture

Internal System Architecture

Integrated Storage Architecture

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

Control Unit

ALU

RAM

Cache

13. Which part of the computer executes instructions?

ROM

CPU

Hard Disk

RAM

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

Disk fragmentation

Fewer registers

Parallel processing

Slow CPU

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

Control mouse pointer

Display graphics

Send signals to the speaker

Communicate with memory and I/O devices

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

ROM

Cache

CPU

RAM

17. Which component is responsible for decoding the instruction?

RAM

ALU

Cache

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

Program Counter

Accumulator

Instruction Register

Stack Pointer

19. Which unit performs arithmetic and logical operations?

Input Unit

Memory Unit

Control Unit

ALU

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

RAM

DVD

SSD

ROM

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

Accumulator

Stack Pointer

Instruction Register

Program Counter

22. What does RISC stand for?

Reliable Instruction System Control

Read Instruction Sequentially and Continuously

Reduced Instruction Set Computer

Random Instruction Storage Chip

23. 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

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

Speed of monitor refresh

Amount of data processed in a given time

Number of programs running

Power consumed by CPU

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

Perform calculations

Control data flow and coordinate CPU operations

Display results

Store data

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26. What is a system bus?

Bus used in LAN

Bus connecting external devices

Collection of data, address, and control buses

Bus only for printers

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

Data bus

Address bus

Control bus

System bus

28. What is a multiprocessor system?

A computer with two or more processors

A system with extra RAM

A computer with a large monitor

A system with multiple printers

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

RISC

Von Neumann

Harvard

CISC

30. Which component controls the execution of instructions?

Cache

ALU

ROM

Control Unit

31. What is meant by instruction cycle?

A loop in a program

The process of converting data to signals

The sequence of steps to fetch and execute instructions

The time to install an OS

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

CISC uses few instructions

RISC uses complex instructions

RISC uses microcode

CISC supports large and complex instruction sets

33. Which type of memory is volatile?

RAM

Hard Disk

ROM

Cache

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

Cache memory

Secondary memory

Main memory

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

Program Counter

Instruction Register

Stack Pointer

Accumulator

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

ROM

USB

Cache

RAM

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

Calculate the answer

Store the output

Bring the instruction from memory to CPU

Send data to the printer

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

Process data

Store files

Enter data and instructions into the computer

Perform calculations

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

Fewer addressing modes

Load/store architecture

Fixed-length instructions

Large instruction set

40. Which of these determines the instruction execution time?

Hard disk speed

Clock cycle

RAM type

Monitor refresh rate

41. What is pipelining in CPU design?

Data compression technique

Memory management technique

Technique for parallel instruction execution

Water-cooling for CPU

42. Which of the following describes CISC?

Complex Instruction Set Computer

Cache Integrated Set Control

Compressed Instruction System

Common Instruction Storage Chip

43. Which part of the CPU performs comparison operations?

ALU

Cache

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

Handling memory access and protection

Managing input devices

Increasing CPU speed

Power supply control

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

CISC

Harvard

Von Neumann

RISC

46. Which of the following is the fastest memory?

DVD

RAM

Cache

Hard Disk

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

Cache Memory

SSD

USB Drive

ROM

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

Cache

DVD

USB

SSD

49. Which of the following stores data permanently?

ROM

Cache

RAM

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

RISC

CISC

Harvard

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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