This online test contains 50 computer-related multiple-choice questions, covering fundamental topics like Computer Basics, Operating Systems, Networking, and Basic Programming. Use this test to evaluate your knowledge and prepare for exams.
I’ll provide all 50 questions and answers here, divided into sections.
Computer Online Test 50 Questions PDF
Computer Fundamentals
- What is the main function of the CPU?
- Answer: B) To process instructions
- Which part of the computer is considered the “brain”?
- Answer: B) CPU
- What does RAM stand for?
- Answer: C) Random Access Memory
- Which component is used to store data permanently?
- Answer: B) Hard Disk
- What is the purpose of the motherboard?
- Answer: A) To connect all components
- Which device is used for audio output?
- Answer: D) Speakers
- What type of device is a printer?
- Answer: B) Output Device
- Which component is used to cool down the CPU?
- Answer: C) Fan
- What does HDD stand for?
- Answer: D) Hard Disk Drive
- Which is the fastest type of memory?
- Answer: A) Cache Memory
Operating Systems
- Which operating system is open-source?
- Answer: C) Linux
- What does ‘Ctrl + Alt + Delete’ open in Windows?
- Answer: A) Task Manager
- The main purpose of an operating system is to?
- Answer: A) Manage hardware and software resources
- Which OS is commonly used in Apple computers?
- Answer: D) macOS
- What is the function of the Recycle Bin?
- Answer: B) Stores deleted files
- Which command is used to shut down a Linux system?
- Answer: A) shutdown
- What is the kernel?
- Answer: C) The core of the OS
- What does GUI stand for?
- Answer: B) Graphical User Interface
- Which OS is mainly used for mobile devices?
- Answer: D) Android
- What is the default file manager in Windows?
- Answer: C) File Explorer
Networking Basics
- What does ‘IP’ stand for in IP address?
- Answer: A) Internet Protocol
- Which device is used to connect multiple networks?
- Answer: C) Router
- What is the standard port number for HTTP?
- Answer: B) 80
- What is the main purpose of DNS?
- Answer: D) To translate domain names into IP addresses
- What is the most common network topology?
- Answer: A) Star
- Which device allows Wi-Fi connection in a network?
- Answer: B) Wireless Router
- What does LAN stand for?
- Answer: D) Local Area Network
- What protocol is used to send emails?
- Answer: B) SMTP
- Which type of network covers a large geographic area?
- Answer: C) WAN
- What is the purpose of a firewall?
- Answer: A) To prevent unauthorized access
Basic Programming
- What does HTML stand for?
- Answer: B) Hyper Text Markup Language
- Which is a loop structure in programming?
- Answer: B) While
- In programming, which language is used for web development?
- Answer: C) JavaScript
- What is a variable?
- Answer: A) A named storage location
- What is an algorithm?
- Answer: D) A step-by-step procedure for solving a problem
- What symbol is commonly used to end statements in programming?
- Answer: C) ;
- What is the output of 3 + 5 * 2 in programming (following BODMAS)?
- Answer: B) 13
- Which language is known for its simplicity?
- Answer: C) Python
- What does IDE stand for?
- Answer: B) Integrated Development Environment
- What is the main purpose of a compiler?
- Answer: A) To convert code into machine language
Computer Applications
- Which application is used for creating text documents?
- Answer: A) MS Word
- Which software is used for managing databases?
- Answer: C) MS Access
- What is Excel primarily used for?
- Answer: B) Spreadsheet calculations
- Which software is used for creating slideshows?
- Answer: A) MS PowerPoint
- Which format is used to store images?
- Answer: B) JPEG
- Which software is used for editing images?
- Answer: D) Adobe Photoshop
- What does PDF stand for?
- Answer: A) Portable Document Format
- Which tool is used to browse the internet?
- Answer: D) Web Browser
- What is the shortcut for ‘Copy’ in most applications?
- Answer: C) Ctrl + C
- Which file format is commonly used for audio files?
- Answer: B) MP3