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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.
Test Helpful For:	ECAT Entry Test Computer Online Test Interview Questions about Computer All Universities Entrance Test Recruitments Tests

ECAT Computer Architecture Test Online MCQs

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

Stack Pointer

Accumulator

Instruction Register

Program Counter

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

ROM

RAM

CPU

Cache

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

Store files

Perform calculations

Enter data and instructions into the computer

Process data

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

Address bus

Control bus

System bus

Data bus

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

Slow RAM

CD-ROM

Cache Memory

Large monitor

6. Which of the following is the fastest memory?

Hard Disk

DVD

Cache

RAM

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

Calculate the answer

Bring the instruction from memory to CPU

Send data to the printer

Store the output

8. What is pipelining in CPU design?

Data compression technique

Memory management technique

Technique for parallel instruction execution

Water-cooling for CPU

9. 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

10. What is meant by instruction cycle?

The process of converting data to signals

The sequence of steps to fetch and execute instructions

The time to install an OS

A loop in a program

11. Which part of the computer executes instructions?

RAM

ROM

CPU

Hard Disk

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

ROM

RAM

SSD

DVD

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

ROM

DVD

Flash Drive

Hard disk

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

SSD

DVD

Cache

USB

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

Communicate with memory and I/O devices

Control mouse pointer

Send signals to the speaker

Display graphics

16. Which of the following best describes instruction pipelining?

Increasing cache size

Repeating instructions

Instruction looping

Overlapping instruction execution

17. What does RISC stand for?

Reliable Instruction System Control

Random Instruction Storage Chip

Reduced Instruction Set Computer

Read Instruction Sequentially and Continuously

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

CISC

Harvard

RISC

Von Neumann

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

Control data flow and coordinate CPU operations

Store data

Perform calculations

Display results

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

Hard Disk

Monitor

RAM

CPU

21. Which register holds the instruction currently being executed?

Data Register

Instruction Register

Stack Pointer

Program Counter

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

ROM

USB

RAM

Cache

23. Which type of memory is volatile?

Cache

Hard Disk

ROM

RAM

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

Instruction Register

Stack Pointer

Accumulator

Program Counter

25. What is a micro-operation?

Complex arithmetic operation

Execution of a large software

Starting the computer

A basic operation on data stored in a register

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

Input Signal Arrangement

Integrated Storage Architecture

Internal System Architecture

Instruction Set Architecture

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

Fewer registers

Slow CPU

Disk fragmentation

Parallel processing

28. What is the role of the address bus?

Carry control signals

Carry data from CPU to memory

Connect CPU to mouse

Specify memory location to access

29. Which of these determines the instruction execution time?

Clock cycle

RAM type

Hard disk speed

Monitor refresh rate

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

Amount of data processed in a given time

Speed of monitor refresh

Number of programs running

Power consumed by CPU

31. Which of the following describes CISC?

Complex Instruction Set Computer

Cache Integrated Set Control

Compressed Instruction System

Common Instruction Storage Chip

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

Harvard

CISC

Von Neumann

RISC

33. Which memory is used to start a computer?

Cache

RAM

ROM

Hard Disk

34. Which component is responsible for decoding the instruction?

ALU

Cache

RAM

35. Which component controls the execution of instructions?

ROM

Control Unit

ALU

Cache

36. Which part of the CPU performs comparison operations?

ALU

Cache

37. Which unit performs arithmetic and logical operations?

Control Unit

Memory Unit

Input Unit

ALU

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

ROM

Cache Memory

USB Drive

SSD

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

Cache

Control Unit

ALU

RAM

40. What is a system bus?

Bus connecting external devices

Bus used in LAN

Collection of data, address, and control buses

Bus only for printers

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

Power supply control

Increasing CPU speed

Managing input devices

Handling memory access and protection

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

Screen resolution

Memory size

Size of ROM

Number of instructions executed per second

43. What is a multiprocessor system?

A computer with two or more processors

A system with multiple printers

A computer with a large monitor

A system with extra RAM

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

Subtraction

Instruction decoding

Addition

Logical comparison

45. Which of the following stores data permanently?

ROM

Cache

RAM

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

Load/store architecture

Fewer addressing modes

Fixed-length instructions

Large instruction set

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

Von Neumann

RISC

Harvard

CISC

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

Store large data

Display data

Temporarily store data and instructions

Control system functions

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

Stack Pointer

Accumulator

Instruction Register

Program Counter

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

Secondary memory

Cache memory

Main memory

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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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