computer MCQs - 11th class Chapter 05 Mcqs

1

Who proposed the design of a stored program computer in 1951?

A

Charles Babbage

B

Alan Turing

C

Von Neumann

D

Bill Gates

2

Which unit reads instructions from memory and decodes them?

A

ALU

B

Main Memory

C

Control Unit (CU)

D

I/O Unit

3

Which component performs basic arithmetic and logical operations?

A

Control Unit

B

Arithmetic and Logical Unit (ALU)

C

Main Memory

D

Bus Interconnection

4

What is the unit that stores the program and data during execution called?

A

CPU

B

Secondary Storage

C

I/O Unit

D

Main Memory

5

Which component handles the processor's communication with its peripherals?

A

ALU

B

Cache Memory

C

Control Unit

D

I/O Unit

6

What is used to connect different parts of the computer together?

A

Bus Interconnection

B

I/O Ports

C

Expansion Slots

D

Cables

7

On personal computers, the CPU is housed in a single chip called a?

A

Circuit Board

B

Transistor

C

Microprocessor

D

Mainframe

8

What is the name for the group of 8 bits into which memory cells are logically organized?

A

Bit

B

Word

C

Nibble

D

Byte

9

What is the unique number assigned to each byte in memory called?

A

Location ID

B

Address

C

Byte Number

D

Cell Code

10

Which type of RAM must have an electric current to maintain its electrical state?

A

SRAM

B

DRAM

C

ROM

D

EPROM

11

Which type of RAM is made from digital gates and does not need refreshing?

A

DRAM

B

SDRAM

C

SRAM

D

RDRAM

12

Which memory is built using SRAM technology to be very fast and is located inside the CPU?

A

Main Memory

B

ROM

C

Hard Disk

D

Cache Memory

13

The contents of which type of memory are lost as soon as the electricity supply is cut-off?

A

ROM

B

PROM

C

Volatile Memory (RAM)

D

EPROM

14

In which type of memory can contents be read but not written onto by the user?

A

RAM

B

Read Only Memory (ROM)

C

Cache

D

SRAM

15

Which form of ROM is initially blank and can be written to once by the user or manufacturer?

A

EPROM

B

EEPROM

C

Mask ROM

D

PROM

16

How is data on an EPROM erased?

A

With an electrical signal

B

By overwriting it

C

Using ultraviolet rays

D

It cannot be erased

17

Which type of ROM can be re-written by using electrical devices?

A

PROM

B

EPROM

C

Mask ROM

D

EEPROM

18

A set of parallel lines (Conducting Wires) used for interconnection is called a?

A

Path

B

Circuit

C

Bus

D

Channel

19

The bus used to connect the main components of a computer is called the?

A

Expansion Bus

B

System Bus

C

External Bus

D

Local Bus

20

Which bus is used to transmit commands like 'MEMORY READ' or 'I/O WRITE'?

A

Data Bus

B

Address Bus

C

System Bus

D

Control Bus

21

Which lines on the system bus are reserved to transfer data between components?

A

Control Bus

B

Address Bus

C

Data Bus

D

Expansion Bus

22

Which bus is used by a component to specify the destination component for communication?

A

Address Bus

B

Data Bus

C

Control Bus

D

System Bus

23

What is used to connect remaining components to the system bus to avoid slow-down?

A

Direct Connection

B

System Bus

C

Expansion Bus

D

Serial Port

24

What hardware component is used to manage communication between the CPU and various peripheral devices?

A

ALU

B

System Bus

C

I/O Unit

D

Cache

25

In which data transfer scheme does a device generate a signal for the processor when it's ready?

A

DMA

B

Polling

C

Interrupts

D

Handshaking

26

What does DMA stand for?

A

Direct Memory Allocation

B

Direct Memory Access

C

Dynamic Memory Access

D

Data Mode Access

27

What are the special-purpose temporary storage areas provided within the CPU called?

A

Cache

B

Slots

C

Sockets

D

Registers

28

Which register holds the address of the next instruction to be fetched?

A

Instruction Register (IR)

B

Memory Address Register (MAR)

C

Program Counter (PC)

D

Memory Buffer Register (MBR)

29

In which register is a fetched instruction stored for decoding?

A

Program Counter (PC)

B

Instruction Register (IR)

C

Memory Address Register (MAR)

D

EAX

30

Which register does the CPU use to store data coming from or going to the memory?

A

MAR

B

PC

C

IR

D

MBR

31

Which general-purpose register is specifically used as a counter for repeating or looping?

A

AX (Accumulator)

B

BX (Base)

C

CX (Counter)

D

DX (Data)

32

Which register has a special role in division and multiplication operations?

A

AX

B

BX

C

CX

D

DX

33

Which segment register holds the base location of all executable instructions in a program?

A

DS (Data Segment)

B

CS (Code Segment)

C

SS (Stack Segment)

D

ES (Extra Segment)

34

What is the default base location for memory variables held by the DS register?

A

Stack Segment

B

Extra Segment

C

Code Segment

D

Data Segment

35

Which segment register contains the base location of the current program stack?

A

CS

B

DS

C

ES

D

SS

36

What is the set of all instructions provided by a CPU commonly known as?

A

Instruction Manual

B

Instruction Set

C

Opcode List

D

CPU Language

37

The function of the control unit is to _______ each instruction code.

A

Store

B

Execute

C

Interpret

D

Transmit

38

In a Zero-Address Instruction Format, which data structure is implicitly used?

A

Queue

B

Array

C

Linked List

D

Stack

39

Which instructions use an implied accumulator (AC) register for all data manipulation?

A

Zero-Address

B

One-Address

C

Two-Address

D

Three-Address

40

Which instruction format is the most common in commercial computers?

A

Zero-Address

B

One-Address

C

Two-Address

D

Three-Address

41

What is the first step in the Fetch-Decode-Execute cycle?

A

Decode Instruction

B

Execute Instruction

C

Fetch Instruction

D

Store Result

42

During the fetch cycle, the CPU reads the instruction pointed to by which register?

A

Instruction Register

B

Memory Address Register

C

Stack Pointer

D

Program Counter

43

A sequence of instructions given to the computer to perform a specific task is called?

A

Hardware

B

CPU

C

Software

D

A peripheral

44

Software designed for a particular customer is known as?

A

Packaged Software

B

System Software

C

Firmware

D

Customized Software

45

Which type of software includes operating systems?

A

Application Software

B

Customized Software

C

System Software

D

Package Software

46

What is a set of programs running in the background to manage a computer system efficiently?

A

Application Software

B

Compiler

C

Operating System (OS)

D

Device Driver

47

Which type of OS interface uses Windows, Menus, Icons, and pointers?

A

Command Prompt

B

Text-Based Interface

C

Graphical User Interface (GUI)

D

Shell Interface

48

A program that translates an assembly language program into binary instructions is called an?

A

Interpreter

B

Compiler

C

Assembler

D

Converter

49

What is the high-level language version of a program usually called?

A

Object Code

B

Machine Code

C

Source Code

D

Bytecode

50

Which translator converts the entire high-level program into machine code before execution?

A

Interpreter

B

Assembler

C

Debugger

D

Compiler