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Sunday, February 1, 2026

🖥️ Tricky Computer MCQs – Quiz

🔥 Competitive Exam – Tricky Computer MCQs

1. Which memory is both fast and non-volatile?

a) RAM
b) Cache
c) ROM
d) Register

✔ c) ROM

2. BIOS is stored in:

a) RAM
b) Cache
c) Hard Disk
d) ROM

✔ d) ROM

3. Which unit performs comparison operations?

a) CU
b) Register
c) ALU
d) Memory

✔ c) ALU

4. Which of the following is NOT an input device?

a) Scanner
b) Light Pen
c) Joystick
d) Plotter

✔ d) Plotter

5. Which memory is called main memory?

a) Cache
b) RAM
c) ROM
d) Secondary memory

✔ b) RAM

6. Which memory has the highest speed?

a) HDD
b) RAM
c) Cache Memory
d) DVD

✔ c) Cache Memory

7. POST is related to:

a) Software installation
b) Booting process
c) File management
d) Internet connection

✔ b) Booting process

8. GUI is an example of:

a) Hardware
b) Application software
c) System software
d) Firmware

✔ c) System software

9. Printer resolution is measured in:

a) Hz
b) DPI
c) RPM
d) bps

✔ b) DPI

10. Which device converts hard copy into soft copy?

a) Printer
b) Monitor
c) Scanner
d) Plotter

✔ c) Scanner

🌐 Computer Abbreviation MCQ – Quiz : Double click to view answer:

🧠 Computer Abbreviation MCQ Quiz

1. CPU stands for:

a) Central Program Unit
b) Central Processing Unit
c) Control Processing Unit
d) Central Performance Unit

✔ b) Central Processing Unit

2. RAM stands for:

a) Read Access Memory
b) Random Access Memory
c) Rapid Access Memory
d) Real Access Memory

✔ b) Random Access Memory

3. ROM is a:

a) Volatile memory
b) Cache memory
c) Non-volatile memory
d) Secondary memory

✔ c) Non-volatile memory

4. ALU is a part of:

a) Input Unit
b) Output Unit
c) Memory Unit
d) CPU

✔ d) CPU

5. BIOS stands for:

a) Binary Input Output System
b) Basic Input Output System
c) Boot Internal Operating System
d) Basic Internet Output System

✔ b) Basic Input Output System

6. GUI stands for:

a) General User Interface
b) Graphical User Interface
c) Guided User Interface
d) Graphical Universal Interface

✔ b) Graphical User Interface

7. HDD stands for:

a) High Density Disk
b) Hard Data Drive
c) Hard Disk Drive
d) High Data Drive

✔ c) Hard Disk Drive

8. SSD stands for:

a) Super Speed Disk
b) Secure Storage Device
c) Solid State Drive
d) System Storage Disk

✔ c) Solid State Drive

9. USB stands for:

a) Universal Serial Bus
b) Unified System Bus
c) Universal Storage Board
d) Ultra System Bus

✔ a) Universal Serial Bus

10. LAN stands for:

a) Large Area Network
b) Local Area Network
c) Logical Area Network
d) Limited Area Network

✔ b) Local Area Network

💻 Computer Abbreviation MCQs

🧠 Computer Abbreviation MCQs

1. CPU stands for:

a) Central Program Unit

b) Central Processing Unit

c) Control Processing Unit

d) Central Performance Unit

✅ Answer: b) Central Processing Unit

2. ALU is a part of:

a) Input Unit

b) Output Unit

c) Memory

d) CPU

✅ Answer: d) CPU

3. RAM stands for:

a) Read Access Memory

b) Random Access Memory

c) Rapid Access Memory

d) Real Access Memory

✅ Answer: b) Random Access Memory

4. ROM is:

a) Volatile memory

b) Cache memory

c) Non-volatile memory

d) Secondary memory

✅ Answer: c) Non-volatile memory

5. GUI stands for:

a) Graphical User Interface

b) General User Interface

c) Graphical Universal Interface

d) Guided User Interface

✅ Answer: a) Graphical User Interface

6. BIOS stands for:

a) Basic Input Output System

b) Binary Input Output System

c) Basic Internal Operating System

d) Boot Input Output System

✅ Answer: a) Basic Input Output System

7. HDD stands for:

a) High Data Disk

b) Hard Data Drive

c) Hard Disk Drive

d) High Density Drive

✅ Answer: c) Hard Disk Drive

8. SSD stands for:

a) Super Speed Disk

b) Solid State Drive

c) Secure Storage Device

d) System Storage Disk

✅ Answer: b) Solid State Drive

9. USB stands for:

a) Universal Serial Bus

b) Unified System Bus

c) Universal System Board

d) Ultra Serial Bus

✅ Answer: a) Universal Serial Bus

10. OS stands for:

a) Open Software

b) Operating System

c) Optical System

d) Output Software

✅ Answer: b) Operating System

11. LAN stands for:

a) Large Area Network

b) Local Area Network

c) Logical Area Network

d) Limited Area Network

✅ Answer: b) Local Area Network

12. WAN stands for:

a) World Area Network

b) Wide Area Network

c) Wireless Area Network

d) Web Area Network

✅ Answer: b) Wide Area Network

13. NIC stands for:

a) Network Interface Card

b) Network Internet Controller

c) New Interface Card

d) Network Internal Card

✅ Answer: a) Network Interface Card

14. OCR stands for:

a) Optical Code Reader

b) Optical Character Recognition

c) Online Character Reader

d) Output Character Recognition

✅ Answer: b) Optical Character Recognition

15. OMR stands for:

a) Optical Mark Reader

b) Online Mark Reader

c) Optical Memory Reader

d) Output Mark Reader

✅ Answer: a) Optical Mark Reader

16. VDU stands for:

a) Visual Data Unit

b) Video Display Unit

c) Visual Display Unit

d) Virtual Display Unit

✅ Answer: c) Visual Display Unit

17. HDMI stands for:

a) High Data Media Interface

b) High Definition Multimedia Interface

c) High Digital Media Interface

d) Hybrid Multimedia Interface

✅ Answer: b) High Definition Multimedia Interface

18. LCD stands for:

a) Liquid Crystal Display

b) Light Crystal Display

c) Low Cost Display

d) Liquid Control Display

✅ Answer: a) Liquid Crystal Display

19. DPI is related to:

a) Speed of processor

b) Monitor size

c) Printer resolution

d) Internet speed

✅ Answer: c) Printer resolution

20. UPS stands for:

a) Universal Power Supply

b) Uninterruptible Power Supply

c) Unified Power System

d) Unlimited Power Source

✅ Answer: b) Uninterruptible Power Supply

🖥️ Short Names of Computer Parts (Abbreviations)

🔹 Core Computer Parts

CPU – Central Processing Unit

ALU – Arithmetic Logic Unit

CU – Control Unit

GPU – Graphics Processing Unit

PSU – Power Supply Unit

UPS – Uninterruptible Power Supply

🔹 Memory & Storage

RAM – Random Access Memory

ROM – Read Only Memory

HDD – Hard Disk Drive

SSD – Solid State Drive

USB – Universal Serial Bus

CD – Compact Disc

DVD – Digital Versatile Disc

BD – Blu-ray Disc

CMOS – Complementary Metal Oxide Semiconductor

🔹 Input Devices

KB – Keyboard

OCR – Optical Character Recognition

OMR – Optical Mark Reader

MIC – Microphone

CCD – Charge-Coupled Device (Scanner camera sensor)

🔹 Output Devices

VDU – Visual Display Unit (Monitor)

LCD – Liquid Crystal Display

LED – Light Emitting Diode

CRT – Cathode Ray Tube

DPI – Dots Per Inch (Printer resolution)

🔹 Ports & Interfaces

HDMI – High-Definition Multimedia Interface

VGA – Video Graphics Array

LAN – Local Area Network

WAN – Wide Area Network

NIC – Network Interface Card

RJ-45 – Registered Jack-45

🔹 Software & OS (Commonly Asked)

OS – Operating System

GUI – Graphical User Interface

CLI – Command Line Interface

BIOS – Basic Input Output System

DOS – Disk Operating System

API – Application Programming Interface

🔹 Data & Performance

Hz – Hertz

GHz – Gigahertz

bps – Bits per second

MB / GB / TB – Megabyte / Gigabyte / Terabyte

⭐ One-Line Exam Tip

CPU, ALU, CU, RAM, ROM, HDD, SSD, BIOS, OS, GUI are the MOST IMPORTANT abbreviations for competitive exams.

Block Diagram of a Computer System : Explanation

🖥️ Block Diagram of a Computer System

📌 Text Diagram (Exam-Friendly)


┌─────────────┐
│ Input Unit  │
│ (Keyboard,  │
│ Mouse etc.) │
└──────┬──────┘
       ↓
┌─────────────┐
│     CPU     │
│ ┌─────────┐ │
│ │   CU    │ │
│ ├─────────┤ │
│ │   ALU   │ │
│ └─────────┘ │
└──────┬──────┘
       ↓
┌─────────────┐
│ Output Unit │
│ (Monitor,  │
│ Printer)   │
└─────────────┘
       ↑
┌─────────────┐
│   Memory    │
│ RAM / ROM  │
└─────────────┘

🧩 Explanation of Each Part (With Diagram Reference)

1️⃣ Input Unit

📍 Position in diagram: Left side (first block)

🔹 What it does:

Accepts data and instructions from the user
Converts them into machine-readable form

🔹 Examples:

Keyboard
Mouse
Scanner
Microphone

✍ Exam line:

👉 Input Unit sends data and instructions to the CPU for processing.

2️⃣ Central Processing Unit (CPU)

📍 Position in diagram: Middle (main block)

The CPU is the brain of the computer. All processing happens here.

🔸 A) Control Unit (CU)

📍 Inside CPU

Function:

Controls all operations
Tells input, memory, and output units what to do and when

✍ CU does not process data, it only controls.

🔸 B) Arithmetic Logic Unit (ALU)

📍 Inside CPU

Function:

Performs arithmetic operations ( + − × ÷ )
Performs logical operations (>, <, =, AND, OR)

✍ ALU is responsible for calculations and decision making.

3️⃣ Memory Unit

📍 Connected to CPU (bottom block)

🔹 What it does:

Stores data, instructions, and results
Supplies data to CPU when required

🔹 Types:

RAM – Temporary, volatile
ROM – Permanent, non-volatile

✍ Memory helps CPU by storing data during processing.

4️⃣ Output Unit

📍 Position in diagram: Right side (last block)

🔹 What it does:

Displays processed results to the user
Converts machine output into human-readable form

🔹 Examples:

Monitor
Printer
Speaker

✍ Output Unit presents the final result.

🔁 Working of Computer (Flow Explanation)

Input Unit takes data
Data goes to CPU
CU controls the process
ALU performs calculations
Memory stores data/results
Output Unit shows the result

⭐ 5-Mark Exam Answer (Ready-Made)

A computer system consists of Input Unit, CPU, Memory Unit, and Output Unit.
The Input Unit accepts data and instructions.
The CPU processes data with the help of CU and ALU.
The Memory Unit stores data temporarily or permanently.
The Output Unit displays the processed result to the user.

Different Parts of a Computer : Explanation:

🖥️ Different Parts of a Computer

A computer is made up of two main parts:

Hardware (physical parts)
Software (programs)

1️⃣ Hardware

Hardware means the physical components of a computer that we can see and touch.

🔹 A) Input Devices

Input devices are used to enter data and instructions into the computer.

Examples:

Keyboard – used to type text and numbers
Mouse – used to point, click, and select
Scanner – converts paper documents into digital form
Microphone – used to input sound
Webcam – used to input images/video

👉 Function: Send data to the computer.

🔹 B) Central Processing Unit (CPU)

The CPU is the brain of the computer. It controls all operations.

The CPU has three main parts:

1. ALU (Arithmetic Logic Unit)

Performs calculations (addition, subtraction, comparison, logic)

2. CU (Control Unit)

Controls and coordinates all activities of the computer
Directs input, processing, and output

3. Registers

Very small, very fast memory inside the CPU
Stores data temporarily during processing

👉 Function: Processes data and controls the system.

🔹 C) Memory (Storage Unit)

Memory stores data, instructions, and results.

🔸 Primary Memory (Main Memory)

RAM (Random Access Memory)
- Volatile (data lost when power off)
- Stores running programs
ROM (Read Only Memory)
- Non-volatile
- Stores permanent instructions like BIOS

🔸 Secondary Memory

Permanent storage
Used to store large amounts of data

Examples:

Hard Disk / SSD
Pen Drive
CD / DVD
Memory Card

👉 Function: Stores data permanently.

🔹 D) Output Devices

Output devices display the result of processing.

Examples:

Monitor – displays text and images
Printer – produces hard copy
Speaker – outputs sound
Projector – displays output on large screen

👉 Function: Shows results to the user.

2️⃣ Software

Software is a set of instructions that tells the computer what to do.

🔹 A) System Software

Controls the working of the computer.

Examples:

Operating System (Windows, Linux, macOS)
Device drivers

👉 Function: Acts as a bridge between user and hardware.

🔹 B) Application Software

Used to perform specific tasks.

Examples:

MS Word – typing documents
MS Excel – calculations
MS PowerPoint – presentations
Browser (Chrome, Firefox)

🔹 C) Utility Software

Helps in maintenance and security.

Examples:

Antivirus
Disk Cleanup
Backup tools

🧠 Block Diagram (In Words)

Input Devices → CPU (Processing) → Output Devices
↓
Memory

⭐ One-Line Exam Summary

Input Unit: Takes data
CPU: Processes data
Memory: Stores data
Output Unit: Displays result

🖥️ Computer MCQs Test (76–150)

Computer MCQs (76–150)

Double click to view answer:

76. Which is an example of e-commerce?

a) Gmail
b) Amazon
c) Wikipedia
d) Chrome

✔ b) Amazon

150. Which architecture uses single memory for data & instructions?

a) Harvard
b) Modified Harvard
c) Von Neumann
d) Parallel

✔ c) Von Neumann

◀ Previous

💻 Computer MCQs Test (1–75)

Computer MCQs (1–75)

Double click to view answer.

1. Who is the father of computers?

a) Alan Turing
b) Charles Babbage
c) Bill Gates
d) Steve Jobs

✔ b) Charles Babbage

2. CPU stands for?

a) Central Program Unit
b) Central Processing Unit
c) Computer Processing Unit
d) Control Unit

✔ b) Central Processing Unit

75. Which of the following is a cybercrime?

a) Hacking
b) Phishing
c) Identity theft
d) All of these

✔ d) All of these

Next ▶

SUPER ADVANCED COMPUTER MCQs

SUPER ADVANCED COMPUTER MCQs (101–150)

101. Which scheduling algorithm may cause starvation?

a) FCFS
b) Round Robin
c) Priority Scheduling
d) SJF (non-preemptive)
✔ Answer: c) Priority Scheduling

102. Which of the following is NOT a real-time operating system?

a) VxWorks
b) QNX
c) Windows 10
d) RTLinux
✔ Answer: c) Windows 10

103. What is the default subnet mask for Class C IP address?

a) 255.0.0.0
b) 255.255.0.0
c) 255.255.255.0
d) 255.255.255.255
✔ Answer: c) 255.255.255.0

104. Which layer of OSI model is responsible for encryption and compression?

a) Application
b) Session
c) Presentation
d) Transport
✔ Answer: c) Presentation

105. Which normal form eliminates transitive dependency?

a) 1NF
b) 2NF
c) 3NF
d) BCNF
✔ Answer: c) 3NF

106. Which command shows current IP configuration in Windows?

a) ping
b) tracert
c) ipconfig
d) netstat
✔ Answer: c) ipconfig

107. Which memory management technique suffers from external fragmentation?

a) Paging
b) Segmentation
c) Virtual memory
d) Cache mapping
✔ Answer: b) Segmentation

108. Which key is also known as the “context switch” key?

a) Alt
b) Shift
c) Ctrl
d) Tab
✔ Answer: a) Alt

109. Which protocol provides secure communication over a computer network?

a) FTP
b) HTTP
c) HTTPS
d) SMTP
✔ Answer: c) HTTPS

110. What is the size of IPv4 address?

a) 16 bits
b) 32 bits
c) 64 bits
d) 128 bits
✔ Answer: b) 32 bits

111. Which database language is used to define database structure?

a) DML
b) DCL
c) DDL
d) TCL
✔ Answer: c) DDL

112. Which type of malware hides itself inside legitimate software?

a) Worm
b) Virus
c) Trojan Horse
d) Spyware
✔ Answer: c) Trojan Horse

113. Which process state is not valid?

a) Ready
b) Waiting
c) Running
d) Executing
✔ Answer: d) Executing

114. Which addressing mode is used in IPv6?

a) Classful
b) Classless
c) Both
d) None
✔ Answer: b) Classless

115. Which SQL command removes all records but keeps table structure?

a) DROP
b) DELETE
c) TRUNCATE
d) REMOVE
✔ Answer: c) TRUNCATE

116. Which device operates at the Data Link layer?

a) Router
b) Gateway
c) Switch
d) Repeater
✔ Answer: c) Switch

117. Which type of attack uses multiple systems to attack one target?

a) Phishing
b) DoS
c) DDoS
d) Spoofing
✔ Answer: c) DDoS

118. Which file system supports large files and encryption in Windows?

a) FAT16
b) FAT32
c) NTFS
d) EXT4
✔ Answer: c) NTFS

119. Which cache mapping technique is fastest?

a) Direct mapping
b) Fully associative
c) Set associative
d) Virtual mapping
✔ Answer: b) Fully associative

120. Which SQL clause is used with aggregate functions?

a) WHERE
b) GROUP BY
c) ORDER BY
d) HAVING
✔ Answer: d) HAVING

121. Which OS concept prevents deadlock by avoiding circular wait?

a) Mutual exclusion
b) Hold and wait
c) Preemption
d) Circular wait
✔ Answer: c) Preemption

122. Which IP address is used for loopback testing?

a) 192.168.1.1
b) 0.0.0.0
c) 127.0.0.1
d) 255.255.255.0
✔ Answer: c) 127.0.0.1

123. Which type of key is used in symmetric encryption?

a) Public key
b) Private key
c) Same key for encryption and decryption
d) Hash key
✔ Answer: c) Same key for encryption and decryption

124. Which memory uses tags to identify data blocks?

a) RAM
b) Cache
c) ROM
d) Register
✔ Answer: b) Cache

125. Which SQL command is used to remove a table permanently?

a) DELETE
b) DROP
c) TRUNCATE
d) REMOVE
✔ Answer: b) DROP

126. Which OSI layer ensures end-to-end delivery?

a) Network
b) Transport
c) Session
d) Application
✔ Answer: b) Transport

127. Which scheduling algorithm gives minimum average waiting time?

a) FCFS
b) Priority
c) Round Robin
d) SJF
✔ Answer: d) SJF

128. Which device amplifies signals in a network?

a) Router
b) Switch
c) Repeater
d) Bridge
✔ Answer: c) Repeater

129. Which key combination locks a Windows computer?

a) Ctrl + L
b) Alt + L
c) Windows + L
d) Ctrl + Alt + L
✔ Answer: c) Windows + L

130. Which type of join returns only matching records?

a) LEFT JOIN
b) RIGHT JOIN
c) FULL JOIN
d) INNER JOIN
✔ Answer: d) INNER JOIN

131. Which malware records keystrokes secretly?

a) Adware
b) Keylogger
c) Ransomware
d) Worm
✔ Answer: b) Keylogger

132. Which addressing method maps multiple IPs to one MAC?

a) ARP
b) RARP
c) Proxy ARP
d) DNS
✔ Answer: c) Proxy ARP

133. Which SQL constraint ensures unique values?

a) NOT NULL
b) PRIMARY KEY
c) UNIQUE
d) CHECK
✔ Answer: c) UNIQUE

134. Which layer converts data into signals?

a) Physical
b) Data Link
c) Network
d) Transport
✔ Answer: a) Physical

135. Which OS provides services to both user and hardware?

a) Shell
b) Kernel
c) BIOS
d) Compiler
✔ Answer: b) Kernel

136. Which addressing is used by switches?

a) IP address
b) MAC address
c) Port address
d) Logical address
✔ Answer: b) MAC address

137. Which memory technique allows execution of programs larger than RAM?

a) Cache
b) Segmentation
c) Paging
d) Virtual Memory
✔ Answer: d) Virtual Memory

138. Which attack redirects traffic to a fake website?

a) Spoofing
b) Sniffing
c) Spamming
d) DoS
✔ Answer: a) Spoofing

139. Which normal form removes multivalued dependency?

a) 3NF
b) BCNF
c) 4NF
d) 5NF
✔ Answer: c) 4NF

140. Which port number is used by HTTPS?

a) 21
b) 25
c) 80
d) 443
✔ Answer: d) 443

141. Which SQL keyword is used to sort result set?

a) SORT
b) GROUP BY
c) ORDER BY
d) FILTER
✔ Answer: c) ORDER BY

142. Which OSI layer manages dialog control?

a) Presentation
b) Session
c) Transport
d) Network
✔ Answer: b) Session

143. Which scheduling is used in time-sharing systems?

a) FCFS
b) SJF
c) Priority
d) Round Robin
✔ Answer: d) Round Robin

144. Which device converts digital to digital signals?

a) Modem
b) Repeater
c) Codec
d) Multiplexer
✔ Answer: b) Repeater

145. Which type of backup copies only changed files since last backup?

a) Full
b) Differential
c) Incremental
d) Mirror
✔ Answer: c) Incremental

146. Which IP version uses 128-bit addressing?

a) IPv2
b) IPv4
c) IPv6
d) IPv8
✔ Answer: c) IPv6

147. Which malware demands ransom for data recovery?

a) Worm
b) Trojan
c) Ransomware
d) Spyware
✔ Answer: c) Ransomware

148. Which protocol resolves IP address to MAC address?

a) DNS
b) ARP
c) RARP
d) DHCP
✔ Answer: b) ARP

149. Which SQL command is used to change table structure?

a) UPDATE
b) MODIFY
c) ALTER
d) CHANGE
✔ Answer: c) ALTER

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

a) Harvard
b) Modified Harvard
c) Von Neumann
d) Parallel
✔ Answer: c) Von Neumann

Advanced Computer MCQs (51–100)

51. Which generation of computers used vacuum tubes?

a) First
b) Second
c) Third
d) Fourth
✔ Answer: a) First

52. Which memory is located closest to the CPU?

a) RAM
b) ROM
c) Cache
d) Hard Disk
✔ Answer: c) Cache

53. Which language is called a low-level language?

a) Java
b) Python
c) Assembly
d) BASIC
✔ Answer: c) Assembly

54. Which number system is used internally by computers?

a) Decimal
b) Octal
c) Hexadecimal
d) Binary
✔ Answer: d) Binary

55. Which operating system is open-source?

a) Windows
b) macOS
c) Linux
d) MS-DOS
✔ Answer: c) Linux

56. Which device is used to connect multiple computers in a network?

a) Modem
b) Switch
c) Printer
d) Scanner
✔ Answer: b) Switch

57. Which of the following is NOT a database software?

a) Oracle
b) MySQL
c) MS Access
d) MS Word
✔ Answer: d) MS Word

58. Which protocol is used for sending emails?

a) FTP
b) HTTP
c) SMTP
d) POP
✔ Answer: c) SMTP

59. What does IP stand for?

a) Internet Program
b) Internal Protocol
c) Internet Protocol
d) Interconnected Path
✔ Answer: c) Internet Protocol

60. Which device is used to convert digital signals into analog signals?

a) Router
b) Switch
c) Modem
d) Hub
✔ Answer: c) Modem

61. Which of the following is an example of firmware?

a) Windows
b) BIOS
c) MS Word
d) Linux
✔ Answer: b) BIOS

62. Which memory is non-volatile?

a) RAM
b) Cache
c) Register
d) ROM
✔ Answer: d) ROM

63. Which key combination is used to open Task Manager?

a) Ctrl + Alt + Del
b) Ctrl + Shift + Esc
c) Alt + F4
d) Ctrl + Esc
✔ Answer: b) Ctrl + Shift + Esc

64. Which port number is used by HTTP?

a) 21
b) 25
c) 80
d) 110
✔ Answer: c) 80

65. Which of the following is a search engine?

a) Chrome
b) Firefox
c) Google
d) Windows
✔ Answer: c) Google

66. Which file system is used by Windows?

a) FAT32
b) NTFS
c) EXT4
d) HFS
✔ Answer: b) NTFS

67. Which topology has a central node?

a) Bus
b) Ring
c) Star
d) Mesh
✔ Answer: c) Star

68. Which of the following is an example of cloud storage?

a) RAM
b) Hard Disk
c) Google Drive
d) Pen Drive
✔ Answer: c) Google Drive

69. Which device is used to forward data packets between networks?

a) Hub
b) Switch
c) Router
d) Bridge
✔ Answer: c) Router

70. Which of the following is NOT an internet browser?

a) Chrome
b) Firefox
c) Opera
d) Android
✔ Answer: d) Android

71. What does GUI stand for?

a) General User Interface
b) Graphical User Interface
c) Global User Interaction
d) Graphical Utility Interface
✔ Answer: b) Graphical User Interface

72. Which software converts high-level language to machine language?

a) Compiler
b) Editor
c) Loader
d) Debugger
✔ Answer: a) Compiler

73. Which command is used to copy files in DOS?

a) move
b) copy
c) paste
d) transfer
✔ Answer: b) copy

74. Which memory stores frequently used instructions?

a) Hard Disk
b) ROM
c) Cache
d) Pen Drive
✔ Answer: c) Cache

75. Which of the following is a cybercrime?

a) Hacking
b) Phishing
c) Identity theft
d) All of the above
✔ Answer: d) All of the above

76. Which of the following is an example of e-commerce?

a) Gmail
b) Amazon
c) Google Maps
d) Wikipedia
✔ Answer: b) Amazon

77. Which key closes an active window?

a) Ctrl + W
b) Alt + F4
c) Ctrl + Alt
d) Shift + Esc
✔ Answer: b) Alt + F4

78. Which unit measures data transfer speed?

a) Byte
b) Hertz
c) bps
d) Pixel
✔ Answer: c) bps

79. Which of the following is NOT a network topology?

a) Star
b) Ring
c) Bus
d) Grid
✔ Answer: d) Grid

80. Which memory is used to store the operating system?

a) Cache
b) RAM
c) Hard Disk
d) Register
✔ Answer: c) Hard Disk

81. Which of the following is an example of malware?

a) Firewall
b) Antivirus
c) Virus
d) Browser
✔ Answer: c) Virus

82. Which protocol is used for file transfer?

a) HTTP
b) SMTP
c) FTP
d) POP
✔ Answer: c) FTP

83. Which key is used to rename a file in Windows?

a) F1
b) F2
c) F5
d) F12
✔ Answer: b) F2

84. Which software is used for spreadsheet calculations?

a) MS Word
b) MS Excel
c) MS Paint
d) Notepad
✔ Answer: b) MS Excel

85. Which of the following is an example of artificial intelligence?

a) Calculator
b) Chatbot
c) Printer
d) Scanner
✔ Answer: b) Chatbot

86. Which unit executes program instructions?

a) ALU
b) CU
c) CPU
d) Register
✔ Answer: c) CPU

87. Which generation of computers used ICs?

a) First
b) Second
c) Third
d) Fourth
✔ Answer: c) Third

88. Which storage device has the largest capacity?

a) CD
b) DVD
c) Hard Disk
d) Floppy Disk
✔ Answer: c) Hard Disk

89. Which shortcut opens Run dialog box?

a) Ctrl + R
b) Alt + R
c) Windows + R
d) Shift + R
✔ Answer: c) Windows + R

90. Which of the following is NOT system software?

a) Windows
b) Linux
c) MS Word
d) DOS
✔ Answer: c) MS Word

91. What is the full form of ISP?

a) Internet Service Provider
b) Internal Service Program
c) Internet System Protocol
d) Integrated Service Provider
✔ Answer: a) Internet Service Provider

92. Which device is used for network security?

a) Hub
b) Switch
c) Firewall
d) Repeater
✔ Answer: c) Firewall

93. Which type of software helps in virus protection?

a) Utility software
b) System software
c) Application software
d) Programming software
✔ Answer: a) Utility software

94. Which extension is used for PowerPoint files?

a) .doc
b) .xls
c) .ppt
d) .pdf
✔ Answer: c) .ppt

95. Which technology is used in Bluetooth?

a) Infrared
b) Radio waves
c) Microwaves
d) Satellite
✔ Answer: b) Radio waves

96. Which memory temporarily stores data being processed?

a) ROM
b) Hard Disk
c) RAM
d) CD
✔ Answer: c) RAM

97. Which type of computer is used for weather forecasting?

a) Microcomputer
b) Minicomputer
c) Mainframe
d) Supercomputer
✔ Answer: d) Supercomputer

98. Which command is used to delete a file in DOS?

a) remove
b) erase
c) delete
d) del
✔ Answer: d) del

99. Which of the following is an example of social networking site?

a) Google
b) Facebook
c) Yahoo
d) Bing
✔ Answer: b) Facebook

100. Which type of attack tricks users into revealing personal information?

a) Virus
b) Worm
c) Phishing
d) Trojan
✔ Answer: c) Phishing