Question 1

The command to 'Print' a document is:

Accepted Answer

Correct Answer: Ctrl + P

Explanation: Ctrl + P is the standard shortcut to open the Print dialog box. From there, you can select your printer, choose the number of copies, and adjust other print settings before printing the document. Ctrl + O is for Open.

Question 2

What is 'Cloud Computing'?

Accepted Answer

Correct Answer: Storing and accessing data over the internet

Explanation: Cloud computing is the delivery of computing services over the Internet ('the cloud'). Instead of storing files on your local hard drive, you store them on remote servers (like Google Drive). It allows access to data from anywhere.

Question 3

Which of the following is NOT a storage device?

Accepted Answer

Correct Answer: Plotter

Explanation: A Plotter is an Output Device used for printing vector graphics. It does not store data. Hard Disks, DVDs, and USB Drives are all storage devices used to save data permanently or temporarily.

Question 4

The first page of a website is called:

Accepted Answer

Correct Answer: Home Page

Explanation: While technically often named 'index.html', the first page a user sees is called the Home Page. It serves as the landing page and navigation hub. It introduces the purpose of the website to the visitor.

Question 5

Which device is both an Input and Output device?

Accepted Answer

Correct Answer: Touchscreen

Explanation: A Touchscreen is both an Input and Output device. It displays visual output like a monitor (Output), but also allows the user to interact with the system by touching the screen (Input). It eliminates the need for a separate mouse.

Question 6

What does 'UPS' stand for?

Accepted Answer

Correct Answer: Uninterruptible Power Supply

Explanation: UPS stands for Uninterruptible Power Supply. It is a device that provides emergency power to a load when the input power source fails. It allows users to save their work and shut down the computer safely during a power outage.

Question 7

Which type of computer is mostly used in homes?

Accepted Answer

Correct Answer: Micro Computer

Explanation: Microcomputers are the most common type of computers used in homes and offices. They are powered by a microprocessor. Examples include Desktops, Laptops, Tablets, and Smartphones. They are designed for individual use.

Question 8

The 'Esc' key is used to:

Accepted Answer

Correct Answer: Cancel or Abort a command

Explanation: The Esc (Escape) key is used to cancel or abort the current operation. For example, it can close a popup menu, stop a webpage from loading, or exit full-screen mode in a video player. It is located at the top-left of the keyboard.

Question 9

Which shortcut key closes the currently active window?

Accepted Answer

Correct Answer: Alt + F4

Explanation: Alt + F4 is the standard keyboard shortcut to close the currently active window. If no window is open or the desktop is selected, it opens the 'Shut Down' dialog box. Ctrl + W is often used to close just the current tab.

Question 10

What is the purpose of a 'Server'?

Accepted Answer

Correct Answer: To serve data to other computers

Explanation: A server is a computer or system that provides resources, data, services, or programs to other computers, known as 'clients', over a network. For example, a web server hosts websites and serves pages to users' browsers.

Question 11

Which of the following is a Mobile Operating System?

Accepted Answer

Correct Answer: Android

Explanation: Android is a mobile operating system based on a modified version of the Linux kernel. It is developed by Google and is used in smartphones and tablets. Other mobile OS examples include iOS (Apple). Windows and MacOS are primarily desktop OS.

Question 12

Which key deletes the character to the LEFT of the cursor?

Accepted Answer

Correct Answer: Backspace

Explanation: The Backspace key deletes the character to the left of the cursor. In contrast, the 'Delete' key removes the character to the *right* of the cursor. Backspace is primarily used for correcting typing errors as you type.

Question 13

A 'Nibble' consists of how many bits?

Accepted Answer

Correct Answer: 4

Explanation: A Nibble is a unit of data equal to 4 bits. It is exactly half of a Byte (which is 8 bits). In computer architecture, nibbles are often used to represent a single hexadecimal digit (0-9, A-F).

Question 14

What is 'Spam' in email?

Accepted Answer

Correct Answer: Junk or Unwanted mail

Explanation: Spam refers to unsolicited or junk email sent in bulk. It is often used for advertising, phishing, or spreading malware. Email providers use spam filters to automatically move these messages to a separate 'Spam' or 'Junk' folder.

Question 15

Which component keeps the time and date even when the computer is off?

Accepted Answer

Correct Answer: CMOS Battery

Explanation: The CMOS Battery (Complementary Metal-Oxide-Semiconductor) is a small coin-sized battery on the motherboard. It powers the BIOS firmware to maintain system settings like Date and Time even when the computer is unplugged. If the time resets, the battery likely needs replacing.

Question 16

Who is the founder of Facebook?

Accepted Answer

Correct Answer: Mark Zuckerberg

Explanation: Mark Zuckerberg is the co-founder of Facebook (now Meta). He launched the service in 2004 from his Harvard University dormitory room. It became the world's largest social network. He is one of the most influential figures in the tech world.

Question 17

The 'F5' key is also used in PowerPoint to:

Accepted Answer

Correct Answer: Start Slide Show

Explanation: In Microsoft PowerPoint, pressing F5 starts the Slide Show from the beginning (first slide). This is a very common shortcut used during presentations. To start from the *current* slide, the shortcut is usually Shift + F5.

Question 18

Which of the following is NOT a web browser?

Accepted Answer

Correct Answer: Facebook

Explanation: Facebook is a Social Media Platform, not a web browser. Chrome, Firefox, and Edge are software applications used to access websites. Facebook is a website itself that you access *using* a web browser.

Question 19

What is the full form of 'email'?

Accepted Answer

Correct Answer: Electronic Mail

Explanation: Email stands for Electronic Mail. It is a method of exchanging messages between people using electronic devices. Ray Tomlinson is credited with inventing the modern email system in 1971. It uses protocols like SMTP, POP3, and IMAP.

Question 20

Which shortcut key is used to 'Cut' selected text?

Accepted Answer

Correct Answer: Ctrl + X

Explanation: Ctrl + X is the keyboard shortcut for 'Cut'. Unlike Copy, Cut removes the selected item from its original location and places it on the clipboard. You can then paste it elsewhere using Ctrl + V. The 'X' resembles a pair of scissors.

Computer Basics MCQs