Computer Basic MCQ Quiz - Objective Question with Answer for Computer Basic - Download Free PDF

Last updated on Jun 5, 2025

Latest Computer Basic MCQ Objective Questions

Computer Basic Question 1:

Which is not a programming language

  1. FORTRAN
  2. BASIC
  3. COBOL
  4. ASCII

Answer (Detailed Solution Below)

Option 4 : ASCII

Computer Basic Question 1 Detailed Solution

The correct answer is ASCII.

Key Points

  • ASCII stands for American Standard Code for Information Interchange.
  • It is a character encoding standard used in computers and other devices that use text.
  • ASCII codes represent text in computers, telecommunications equipment, and other devices.
  • Each ASCII code represents a unique character, such as a letter, number, or symbol.
  • It was developed in the early 1960s and is based on the English alphabet.

 Additional Information

  • FORTRAN
    • FORTRAN stands for Formula Translation and is one of the oldest high-level programming languages.
    • It was developed in the 1950s by IBM for scientific and engineering calculations.
  • BASIC
    • BASIC stands for Beginner's All-purpose Symbolic Instruction Code.
    • It was designed in the 1960s to provide an easy-to-learn programming language for beginners.
  • COBOL
    • COBOL stands for Common Business-Oriented Language.
    • It was developed in the late 1950s and early 1960s for business data processing.

Computer Basic Question 2:

Match the following: 

  List - I (Items)   List - II (Usage)
1) Vacuum Tube (i)  Optical Storage Device
2) Floopy Disk (ii)  Used in First Generation Computers
3) CD-ROM (iii)  Used in Second Generation Computers
4) Transistors (iv)  Magnetic Storage Device

  1. 1 - ii, 2 - iv, 3 - i, 4 - iii
  2. 1 - iv, 2 - i, 3 - ii, 4 - iii
  3. 1 - iii, 2 - ii, 3 - iv, 4 - i
  4. 1 - i, 2 - ii, 3 - iii, 4 - iv

Answer (Detailed Solution Below)

Option 1 : 1 - ii, 2 - iv, 3 - i, 4 - iii

Computer Basic Question 2 Detailed Solution

The correct answer is 1 - ii, 2 - iv, 3 - i, 4 - iii.

Key Points

  • Vacuum Tube is correctly matched with Used in First Generation Computers.
  • In the early stages of computing, vacuum tubes were used as the primary method for electronic signal processing.
  • Floopy Disk is correctly matched with Magnetic Storage Device.
  • Floopy disks were widely used as a portable storage solution and utilize magnetic storage technology to read and write data.
  • CD-ROM is correctly matched with Optical Storage Device.
  • CD-ROMs use optical technology to store data and are read by laser beams, making them reliable for data storage and distribution.
  • Transistors are correctly matched with Used in Second Generation Computers.
  • Transistors replaced vacuum tubes in the second generation of computers, providing more efficiency and reliability.

 Additional Information

  • Vacuum Tubes
    • Vacuum tubes were a critical component in the first generation of computers, such as the ENIAC.
    • They are large, consume a lot of power, and generate a significant amount of heat.
  • Floopy Disks
    • The 3.5-inch floppy disk was the most popular size, capable of storing 1.44 MB of data.
    • They were a common method of data transfer and backup in the 1980s and 1990s.
  • CD-ROM
    • CD-ROM stands for Compact Disc Read-Only Memory and was introduced in the 1980s.
    • They typically store up to 700 MB of data and are used for software distribution, multimedia applications, and data storage.
  • Transistors
    • Transistors are semiconductor devices that can amplify or switch electronic signals and electrical power.
    • They significantly reduced the size and power consumption of computers compared to vacuum tubes.

Computer Basic Question 3:

Match the following:

  List - I   List - II
1) HTML File (i)  Text Format
2) PDF File (ii)  Film Format
3) JPG File (iii)  Web Format
4) AVI File (iv)  Image Format

  1. 1 - i, 2 - ii, 3 - iv, 4 - iii
  2. 1 - iii, 2 - i, 3 - iv, 4 - ii
  3. 1 - i, 2 - iv, 3 - ii, 4 - iii
  4. 1 - iv, 2 - iii, 3 - i, 4 - ii

Answer (Detailed Solution Below)

Option 2 : 1 - iii, 2 - i, 3 - iv, 4 - ii

Computer Basic Question 3 Detailed Solution

The Correct answer is 1 - iii, 2 - i, 3 - iv, 4 - ii.

Key Points

  • HTML File - Web Format: HTML files are primarily used to create webpages and are rendered by web browsers.
  • PDF File - Text Format: PDF stands for Portable Document Format, which is used to present documents in a manner independent of application software, hardware, and operating systems.
  • JPG File - Image Format: JPG (or JPEG) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
  • AVI File - Film Format: AVI stands for Audio Video Interleave, which is a multimedia container format introduced by Microsoft, used to store both audio and video data in a file.

 Additional Information

  • HTML File
    • HTML stands for HyperText Markup Language.
    • It is the standard language for documents designed to be displayed in a web browser.
  • PDF File
    • PDF is developed by Adobe.
    • PDFs can contain text, images, links, forms, and other media.
  • JPG File
    • JPG is short for Joint Photographic Experts Group.
    • It is widely used due to its ability to compress images to a smaller file size.
  • AVI File
    • AVI was introduced by Microsoft in November 1992 as part of its Video for Windows software.
    • It allows synchronous audio-with-video playback.

Computer Basic Question 4:

The general image file formats are:

i) TIFF

ii) JPEG

iii) MPEG

iv) PNG

  1. (i), (ii) and (iii) are correct.
  2. (i), (iii) and (iv) are correct.
  3. (i), (ii) and (iv) are correct.
  4. (ii), (iii) and (iv) are correct.

Answer (Detailed Solution Below)

Option 3 : (i), (ii) and (iv) are correct.

Computer Basic Question 4 Detailed Solution

The correct answer is (i), (ii), and (iv) are correct.

Key Points

  • TIFF (Tagged Image File Format) is a common format for exchanging raster graphics (bitmap) images between application programs, including those used for scanner images.
  • JPEG (Joint Photographic Experts Group) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
  • PNG (Portable Network Graphics) is a raster graphics file format that supports lossless data compression and is widely used on the web.

 Additional Information

  • MPEG (Moving Picture Experts Group)
    • MPEG is a working group of authorities that was formed by ISO and IEC to set standards for audio and video compression and transmission.
    • The MPEG standards are an evolving series, each designed for a different purpose, but they all have one thing in common: they use digital techniques to compress and transmit audio and video.
    • MPEG is not typically used for still images but is instead used for video formats.

Computer Basic Question 5:

Match the different types of storage technology with their unique characteristics.

LIST - I

(Storage Technology)

LIST - II

(Characteristics)

A.

SSD

I.

Uses magnetic platters

B.

RAM

II.

Non-volatile Flash memory

C.

HDD

III.

Volatile memory with quick access

D.

ROM

IV.

Permanent Firmware Storage


Choose the correct answer from the options given below:

  1. A - II, B - III, C - I, D - IV
  2. A - III, B - II, C - IV, D - I
  3. A - I, B - III, C - II, D - IV
  4. A - IV, B - I, C - III, D - II

Answer (Detailed Solution Below)

Option 1 : A - II, B - III, C - I, D - IV

Computer Basic Question 5 Detailed Solution

The Correct answer is A - II, B - III, C - I, D - IV

Key Points

  • SSD (Solid-State Drive):
    • An SSD is a storage device that uses NAND flash memory to store data.
    • It is non-volatile, meaning it retains data even when powered off. SSDs are faster and more durable compared to traditional hard drives (HDD) because they do not have moving parts.
    • The use of Flash memory makes SSDs efficient at performing read and write operations quickly.
  • RAM (Random Access Memory):
    • RAM is a type of volatile memory, meaning it only retains data while the device is powered on.
    • Once the power is turned off, the data is lost.
    • RAM allows for fast access to data, which is crucial for active processes and tasks running on the system.
    • The primary role of RAM is to serve as temporary storage for the operating system, applications, and data currently in use.
  • HDD (Hard Disk Drive):
    • An HDD is a traditional storage device that uses spinning magnetic platters to read and write data.
    • These platters are coated with magnetic material, and data is stored magnetically.
    • HDDs are slower compared to SSDs because the platters have to spin, and the read/write heads need to move to access data, but they offer much larger storage capacities at a lower price.
  • ROM (Read-Only Memory):
    • ROM is a type of non-volatile memory used to store firmware, which is software that is permanently programmed into the hardware.
    • The data stored in ROM is permanent and cannot be easily modified or erased.
    • ROM stores essential instructions for booting up the system and performing basic functions.
    • Since it is non-volatile, it retains the data even when the power is off.

Top Computer Basic MCQ Objective Questions

What is the essential feature of WORM compared to other optical storage media?

  1. Recording once done is irreversible
  2. Recording can be digital
  3. It comes on a disk
  4. It has higher storage density

Answer (Detailed Solution Below)

Option 1 : Recording once done is irreversible

Computer Basic Question 6 Detailed Solution

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The correct answer is Recording once done is irreversible:

Key Points

  • In computer media, write once, read many, or WORM, is a data storage technology that allows data to be written to a storage medium a single time and prevents the data from being erased or modified.
  • Storage media that support WORM storage are purposely non-rewritable to prevent anyone from intentionally or accidentally erasing or modifying the data after it is initially stored.
  • WORM media was developed in the late 1970s using optical disks. Over the years, these disks have varied from 5.25 to 14 inches in diameter.
  • The CD-R, DVD-R, and BD-R optical discs for computers are common WORM devices.

Additional Information

  • Optical media refers to any data storage device or equipment that uses optical data storage and retrieval techniques to read and write data.
  • The first recorded historical use of an optical disc was in 1884 when Alexander Graham Bell, Chichester Bell, and Charles Sumner Tainter recorded sound on a glass disc using a beam of light.
  • There are three main types of optical media: CD, DVD, and Blu-ray.

ASCII uses _______ bits to code each character.

  1. 7
  2. 8
  3. 9
  4. 24

Answer (Detailed Solution Below)

Option 1 : 7

Computer Basic Question 7 Detailed Solution

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The correct answer is 7.

Key PointsASCII

  • ASCII is a 7-bit code.
  • It uses seven bits to represent a letter or a punctuation mark.
  • It stands for American Standard Code for Information Interchange.
  • It is a standard data-encoding format for electronic communication between computers. 
  • ASCII assigns standard numeric values to letters, numerals, punctuation marks, and other characters used in computers.
  • The code was first published as a standard in 1967. 

Arrange the following units of storage capacity in increasing order of magnitude:

  1. Megabyte, Kilobyte, Terabyte, Gigabyte
  2. Kilobyte, Terabyte, Gigabyte, Megabyte
  3. Terabyte, Gigabyte, Kilobyte, Megabyte
  4. Kilobyte, Megabyte, Gigabyte, Terabyte

Answer (Detailed Solution Below)

Option 4 : Kilobyte, Megabyte, Gigabyte, Terabyte

Computer Basic Question 8 Detailed Solution

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The correct answer is "Kilobyte, Megabyte, Gigabyte, Terabyte".

Key Points

Unit Symbol Value
Kilobyte KB 103
Megabyte MB 106
Gigabyte GB 109
Terabyte TB 1012
Petabyte PB 1015
Exabyte EB 1018
Zettabyte ZB 1021
YotTabyte YB 1024

Which of the following types of programming language is Java?

  1. Scripting
  2. Object-oriented
  3. Publishing
  4. Algorithmic

Answer (Detailed Solution Below)

Option 2 : Object-oriented

Computer Basic Question 9 Detailed Solution

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The Correct answer is Object-oriented:

Key Points

  •  Programming Language:
    • It is a system of Notation for writing a computer program.
    • First GL is also called Machine Language.
    • The second GL is called assembly Language.
    • Third GL is called a High-level programming language.
    • Fourth GL aims for a higher level of abstraction of internal computer hardware details.
    • Fifth GLare is based on problem-solving.
    • FORTRAN was invented in 1954 by John Backus at IBM.
    • C was developed between 1969 and 1973.

Additional Information

  • Java:
    • ​Java was developed by James Gosling in 1995 at sun Microsystem.
    • Greenstone 3 is written in java.
    • AJAX is an acronym for Asynchronous javascript and XML.

A device that interconnects two or more networks and selectively interchanges packets of data between them is known as

  1. Switch
  2. Gateway
  3. Hub
  4. Router

Answer (Detailed Solution Below)

Option 4 : Router

Computer Basic Question 10 Detailed Solution

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The Correct answer is Router.

Key Points

  • Router.
    • A router is an electronic device that interconnects two or more networks, and selectively interchanges packets of data between them.
    • Routers perform traffic-directing functions on the Internet. Data sent through the internet, such as a web page or email, is in the form of data packets.
    • A packet is typically forwarded from one router to another router through the networks that constitute an internetwork until it reaches its destination node.
    • A router is connected to two or more data lines from different IP networks.

Additional Information

  • Switches
    • ​A network switch forwards data packets between devices.
    • Switches are networking devices operating at layer 2 or a data link layer of the OSI model.
    • Switches can be hardware devices that manage physical networks or software-based virtual devices.
  • Hub
    • ​A network hub is a node that broadcasts data to every computer or Ethernet-based device connected to it.
    •  A hub has many ports in it. They are generally used to connect computers in a LAN.
  • Gateway:
    • A gateway is a crucial network node in telecommunications that serves as a bridge between two networks with different transmission protocols. 
    • Gateways are used to connect and facilitate communication between two networks that use different transmission protocols or technologies. 
  • Nibble:
    • In computing, a nibble is a four-bit aggregation or half an octet.
    • It is also known as a half-byte or tetrade.
    • In a networking or telecommunication context, the nibble is often called a semi-octet, quadbit, or quartet.
    • A nibble has sixteen (24possible values.
    • A nibble can be represented by a single hexadecimal digit (0–F) and called a hex digit.
  • ​Cable:
    • Network cabling is the process of connecting devices to an Internet source.
    • Network cables can be divided into four types: coaxial, shielded twisted pair (STP), unshielded twisted pair (UTP), or fibre optic.

C is a _____ type of high level language. 

  1. Procedural Language 
  2. Non-procedural Language 
  3. Scientific Language 
  4. Business Language 

Answer (Detailed Solution Below)

Option 1 : Procedural Language 

Computer Basic Question 11 Detailed Solution

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The Correct answer is Procedural Language.

Key Points

  • A procedural language
    • It uses a sequence of statements to attain a goal.
    • These steps are called procedures, and a program in such languages contains one or more of these procedures. Common examples include:
      • C and C++
      • Java
      • Pascal
      • BASIC

Additional Information

  • A programming language is a formalized set of instructions that enables a programmer to communicate with a computer and provide it with specific tasks and operations to perform. 

Other Types of PRogramming Languages:

  • Functional programming language:
    • Functional programming languages prioritize mathematical function outputs over statement execution.
    • Functions, as reusable code modules, complete tasks and yield results based on input data. Prominent functional languages are:
      • Scala
      • Erlang
      • Haskell
      • Elixir
      • F#
  • Object-oriented programming languages:
    • Object-oriented programming languages treat programs as object collections with data (attributes) and operations (methods).
    • Objects can be reused within or across programs, making them ideal for complex tasks with reusable, scalable code. Notable object-oriented languages:
      • Java
      • PHP
      • C++
      • Ruby
      • Python
  • Scripting languages:
    • Scripting languages automate tasks, handle dynamic web content, and aid processes in bigger apps.
    • Common scripting languages:
      • PHP
      • Ruby
      • Python
      • bash
      • Perl
      • Node.js
  • Logic programming languages:
    • Logic programming languages convey decisions by presenting facts and rules, as opposed to direct instructions. Examples:
      • Prolog
      • Absys
      • Datalog
      • Alma-0

ASCII has how many codes?

  1. 526
  2. 265
  3. 256
  4. 233

Answer (Detailed Solution Below)

Option 3 : 256

Computer Basic Question 12 Detailed Solution

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The correct answer is 256.

Key Points

  • The full form is ASCII American Standard Code For Information Interchange.
  • It has 256 codes.
  • ASCII was developed by a working committee, known as X3.4 Constituted by IBM, AT&T & it's subsidiary Teletype.
  • This code was an 8-bit character coding system and the arrangement was logical.
  • This particular version of code considered only the upper case characters.

Important Points

  • The ASCII table contains letters, numbers, control characters, and other symbols.
  • Each character is assigned a unique 7-bit code.
  • ASCII is an initial for American Standard Code for Information Interchange.

Which of the following is a property of the main memory?

  1. It has large capacity
  2. It is portable
  3. It has a very long life
  4. It is volatile

Answer (Detailed Solution Below)

Option 4 : It is volatile

Computer Basic Question 13 Detailed Solution

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The correct answer is It is Volatile.

Key Points

Characteristics of Main Memory:

  • It is faster for computer memory as compared to secondary memory.
  • It is semiconductor memories.
  • It is usually a volatile memory.
  • It is the main memory of the computer.
  • A computer system cannot run without primary memory.

Additional Information

Memory is of three types:

  • Primary memory
  • Secondary memory
  • Cache memory

Volatile and Non Volatile memory

  • Volatile memory is used to store information based on the power supply.
  • If the power supply is off, all the data & information on this memory will be lost. For example, RAM (Random Access Memory). 
  • Whereas non-volatile memory is used to store information even when the power supply is off. 
  • For example, ROM (Read Only Memory).

The keyboard shortcut for inserting a link in Microsoft Office is:

  1. Ctrl + L
  2. Ctrl + K
  3. Ctrl + T
  4. Ctrl + F2

Answer (Detailed Solution Below)

Option 2 : Ctrl + K

Computer Basic Question 14 Detailed Solution

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The Correct answer is Ctrl + K.

Key Points

Keyboard Shortcut Function
Ctrl + N Create a new document, worksheet, or file
Ctrl + P Print the current file
Ctrl + S Save the current file.
Ctrl + F Open the “Find and Replace” dialog box
Ctrl + C Copy the selected content.
Ctrl + B Bold the selected text
Ctrl + V Paste the copied content.
Ctrl + K Insert Link
Ctrl + T create a hanging indent 
Ctrl + F2 open the print preview window
Ctrl + L Left-align the selected text or paragraph

 

Keys proceeded by which character are Control key combinations?

  1. ^
  2. -
  3. /
  4. *

Answer (Detailed Solution Below)

Option 1 : ^

Computer Basic Question 15 Detailed Solution

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The Correct answer is ^.

Key Points

  • "^" (caret):
    • In computing, the "^" symbol is used to denote the Control key.
    • Control key combinations, also known as keyboard shortcuts, are sequences of keys that invoke specific commands when pressed simultaneously.
    • For instance, "^C" might represent the action of copying selected content, while "^V" typically refers to pasting.

Additional Information

  •  "*" (asterisk):
    • The asterisk symbol is commonly used as a wildcard character in computing and programming.
    • It represents any sequence of characters or a missing part of a word or phrase.
    • In regular expressions, for example, "*" can denote zero or more occurrences of the preceding character.
  • "-" (hyphen or minus sign):
    • The hyphen or minus sign has various uses in computing.
    • It can denote subtraction in mathematical operations.
    • Additionally, it is used in some programming languages for the subtraction of numbers.
    • In file and folder names, it can be used to separate words or indicate a range, depending on the context.
  • "/" (forward slash or solidus):
    • The forward slash, also known as a solidus, is a significant character in computing.
    • It is primarily used as a separator in file paths in operating systems such as Unix, Linux, and macOS.
    • It is also used in website URLs to separate different parts of the address, such as the domain and the specific page or resource.
    • In programming, it can denote division in mathematical operations.
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