About this quiz
Basic computer and ICT knowledge: hardware, software, memory, full forms, internet, email and keyboard shortcuts.
This Lok Sewa practice set has 20 multiple-choice questions (Subject: General Knowledge · For: Kharidar, Nayab Subba · Level: Easy). Take the quiz above first; after that, use the study list below to revise every question with its correct answer and a short explanation.
Study list: all 20 questions with answers and explanations
What is the full form of CPU?
- A) Central Processing Unit ✔
- B) Central Program Utility
- C) Computer Processing Unit
- D) Control Peripheral Unit
Why: CPU stands for Central Processing Unit, the part of the computer that carries out instructions.
What does RAM stand for?
- A) Read Access Memory
- B) Random Access Memory ✔
- C) Rapid Action Memory
- D) Run Application Memory
Why: RAM means Random Access Memory, the main working memory of a computer.
What is the full form of ROM?
- A) Random Only Memory
- B) Run Once Memory
- C) Read Only Memory ✔
- D) Rewritable Output Memory
Why: ROM stands for Read Only Memory, which stores permanent instructions such as start-up programs.
How many bits make one byte?
- A) 2
- B) 4
- C) 16
- D) 8 ✔
Why: One byte is made of 8 bits.
In computer memory, one kilobyte (KB) is traditionally taken as how many bytes?
- A) 100 bytes
- B) 1024 bytes ✔
- C) 512 bytes
- D) 2048 bytes
Why: In computer memory, 1 KB is equal to 1024 bytes (2 to the power 10).
Which part is commonly called the brain of the computer?
- A) CPU ✔
- B) Monitor
- C) Keyboard
- D) Hard disk
Why: The CPU processes all instructions and controls other parts, so it is called the brain of the computer.
What is the full form of URL?
- A) Universal Remote Link
- B) Unified Resource Library
- C) User Request Locator
- D) Uniform Resource Locator ✔
Why: URL stands for Uniform Resource Locator, the address of a resource on the internet.
What does HTTP stand for?
- A) High Transfer Text Process
- B) Hyperlink Text Transmission Program
- C) HyperText Transfer Protocol ✔
- D) Host Text Transfer Port
Why: HTTP means HyperText Transfer Protocol, the rule set used to transfer web pages.
Which of the following is an input device?
- A) Printer
- B) Speaker
- C) Keyboard ✔
- D) Monitor
Why: A keyboard is used to enter data into the computer, so it is an input device.
Which of the following is an output device?
- A) Printer ✔
- B) Mouse
- C) Scanner
- D) Microphone
Why: A printer gives results from the computer on paper, so it is an output device.
Which of the following is an operating system?
- A) Microsoft Word
- B) Linux ✔
- C) Google Chrome
- D) Adobe Photoshop
Why: Linux is an operating system; the others are application software.
Which keyboard shortcut is commonly used to copy selected text?
- A) Ctrl + V
- B) Ctrl + X
- C) Ctrl + P
- D) Ctrl + C ✔
Why: Ctrl + C copies the selected item to the clipboard.
Which keyboard shortcut is commonly used to paste copied content?
- A) Ctrl + V ✔
- B) Ctrl + C
- C) Ctrl + S
- D) Ctrl + A
Why: Ctrl + V pastes the content stored on the clipboard.
Which keyboard shortcut is commonly used to undo the last action?
- A) Ctrl + Y
- B) Ctrl + U
- C) Ctrl + Z ✔
- D) Ctrl + N
Why: Ctrl + Z undoes the most recent action in most programs.
Which type of memory loses its data when the power is switched off?
- A) ROM
- B) Hard disk
- C) Pen drive
- D) RAM ✔
Why: RAM is volatile memory, so its contents are lost when power is turned off.
Who is known as the father of the computer?
- A) Bill Gates
- B) Charles Babbage ✔
- C) Alan Turing
- D) Tim Berners-Lee
Why: Charles Babbage designed the Analytical Engine and is called the father of the computer.
Who invented the World Wide Web (WWW)?
- A) Steve Jobs
- B) Charles Babbage
- C) Bill Gates
- D) Tim Berners-Lee ✔
Why: Tim Berners-Lee created the World Wide Web in 1989.
In an email address, which symbol separates the user name from the domain name?
- A) #
- B) @ ✔
- C) $
- D) %
Why: The @ symbol separates the user name and the domain, as in name@example.com.
What is a computer virus?
- A) A harmful program that can damage data or spread to other files ✔
- B) A hardware fault in the monitor
- C) A dust particle inside the CPU
- D) A type of input device
Why: A computer virus is a malicious program that can copy itself and harm files or systems.
Which of the following is a web browser?
- A) Microsoft Excel
- B) Windows
- C) Google Chrome ✔
- D) MS-DOS
Why: Google Chrome is a web browser used to open websites on the internet.