Q.1 Which of the following is considered the brain of the computer?
Hard Disk
CPU
RAM
Motherboard
Explanation - The CPU (Central Processing Unit) is called the brain of the computer because it performs all processing and controls the functioning of other components.
Correct answer is: CPU
Q.2 What does RAM stand for?
Random Access Memory
Readily Available Memory
Rapid Access Module
Run All Memory
Explanation - RAM stands for Random Access Memory. It is a volatile memory used to store data temporarily while the computer is running.
Correct answer is: Random Access Memory
Q.3 Which of the following is an example of an input device?
Monitor
Printer
Keyboard
Speaker
Explanation - A keyboard is an input device because it allows the user to enter data into the computer.
Correct answer is: Keyboard
Q.4 Which type of memory is non-volatile?
RAM
ROM
Cache
Registers
Explanation - ROM (Read-Only Memory) is non-volatile memory that retains its data even when the computer is turned off.
Correct answer is: ROM
Q.5 Which one of these is an example of application software?
Windows OS
MS Word
Linux Kernel
BIOS
Explanation - Application software is designed to perform specific tasks for users. MS Word is a word processing application.
Correct answer is: MS Word
Q.6 Which device is used to connect a computer to a network?
Router
Monitor
Printer
Scanner
Explanation - A router is a networking device that connects computers to a network, enabling communication and internet access.
Correct answer is: Router
Q.7 Which one of these is a type of computer network?
LAN
HTML
HTTP
IP
Explanation - LAN (Local Area Network) is a network that connects computers within a limited area, such as a building or campus.
Correct answer is: LAN
Q.8 Which key combination is used to copy selected text in Windows?
Ctrl + X
Ctrl + V
Ctrl + C
Ctrl + P
Explanation - Ctrl + C is the keyboard shortcut used to copy selected text or items to the clipboard in Windows.
Correct answer is: Ctrl + C
Q.9 Which of the following is an example of a storage device?
Keyboard
Mouse
Hard Disk
Monitor
Explanation - A hard disk is a storage device used to store digital data permanently.
Correct answer is: Hard Disk
Q.10 Which software is used to browse the internet?
MS Word
Excel
Google Chrome
Notepad
Explanation - Google Chrome is a web browser used to access and navigate websites on the internet.
Correct answer is: Google Chrome
Q.11 Which of the following is used to prevent unauthorized access to a computer?
Firewall
Printer
Scanner
Monitor
Explanation - A firewall is a security system that monitors and controls incoming and outgoing network traffic, preventing unauthorized access.
Correct answer is: Firewall
Q.12 Which programming language is mainly used for web development?
HTML
C++
Python
Java
Explanation - HTML (Hypertext Markup Language) is used to create and structure web pages and web applications.
Correct answer is: HTML
Q.13 What is the full form of URL?
Universal Resource Locator
Uniform Resource Locator
Uniform Reference Link
Universal Reference Link
Explanation - URL stands for Uniform Resource Locator. It is the address used to access resources on the internet.
Correct answer is: Uniform Resource Locator
Q.14 Which of the following is an operating system?
MS Word
Linux
Chrome
Photoshop
Explanation - Linux is an operating system that manages hardware and software resources of a computer.
Correct answer is: Linux
Q.15 Which type of software protects your computer from viruses?
Antivirus Software
Web Browser
Word Processor
Spreadsheet Software
Explanation - Antivirus software detects, prevents, and removes malicious programs (viruses) from computers.
Correct answer is: Antivirus Software
Q.16 What is the shortcut key for undo in most Windows applications?
Ctrl + Z
Ctrl + Y
Ctrl + X
Ctrl + A
Explanation - Ctrl + Z is the keyboard shortcut used to undo the last action in most Windows applications.
Correct answer is: Ctrl + Z
Q.17 Which of these is an example of cloud storage?
Google Drive
DVD
Hard Disk
Flash Drive
Explanation - Cloud storage allows users to save data on remote servers accessed via the internet, such as Google Drive.
Correct answer is: Google Drive
Q.18 Which of these devices converts digital signals into analog signals for transmission?
Modem
Router
Switch
Hub
Explanation - A modem modulates digital data from a computer into analog signals for transmission over phone lines and demodulates incoming signals back to digital.
Correct answer is: Modem
Q.19 Which of these is a type of malware?
Trojan
Ethernet
Java
HTTP
Explanation - A Trojan is a type of malware that disguises itself as legitimate software to gain access to a computer.
Correct answer is: Trojan
Q.20 What does HTTPS stand for?
HyperText Transfer Protocol Secure
HyperText Transmission Protocol Secure
High Transfer Text Protocol Secure
Hyper Transfer Text Protection System
Explanation - HTTPS is the secure version of HTTP used to transmit data securely over the internet using encryption.
Correct answer is: HyperText Transfer Protocol Secure
Q.21 Which of the following is used to uniquely identify a website on the internet?
IP Address
URL
Domain Name
Both B and C
Explanation - A website is uniquely identified by its URL and domain name, which map to its IP address.
Correct answer is: Both B and C
Q.22 Which of these is a commonly used spreadsheet software?
MS Word
MS Excel
MS PowerPoint
MS Access
Explanation - MS Excel is spreadsheet software used for data organization, calculations, and analysis.
Correct answer is: MS Excel
Q.23 Which of these devices is used to capture images and videos?
Scanner
Camera
Printer
Monitor
Explanation - A camera is an input device used to capture images and videos for processing or storage on a computer.
Correct answer is: Camera
Q.24 Which technology is used for wireless internet connection over short distances?
Bluetooth
Ethernet
Wi-Fi
USB
Explanation - Wi-Fi is a wireless networking technology that allows devices to connect to the internet over short distances without cables.
Correct answer is: Wi-Fi
Q.25 Which of these is a type of non-volatile memory that can be electrically erased and reprogrammed?
EPROM
RAM
Cache
Registers
Explanation - EPROM (Erasable Programmable Read-Only Memory) retains data even when the power is off and can be erased and reprogrammed using electrical signals.
Correct answer is: EPROM