Explanation

• An antivirus software protects a computer against malware and viruses.
• It detects, blocks, and removes harmful software from a computer.
• Common threats include viruses, worms, Trojans, and spyware.
• Antivirus software helps protect files, programs, and system data.
• It can provide real-time protection against new threats.

Last verified on 12-08-2026

Explanation

• First man who travelled in Space was Yuri Gagarin in 1961.
• Yuri Gagarin was a Soviet pilot and cosmonaut.
• He aboard the first successful crewed spaceflight, became the first human to journey into outer space.

Additional information:

• First man who Walk in Space was Alexei Leonov in 1965.
• First man who Walk on Moon was Neil Armstrong in 1969.

Last verified on 10-03-2026

Explanation

• The CPU (Central Processing Unit) is the brain/heart of the computer.
• It performs all calculations, executes instructions, and controls other components.

Additional information:

• First commercial CPU: Intel 4004 (1971)
• Invented by: Italian physicist Federico Faggin
• CPU Examples: Clock speeds – 3.0 GHz, 3.5 GHz, 4.0 GHz, 4.5 GHz, 5.0 GHz

Last verified on 15-02-2026

Explanation

• Location of the first wahi: Cave Hira (Ghar-e-Hira), Makkah
• Number of verses: 5
• Surah: Al-Alaq (96th Surah)
• Angel: Jibril (A.S.)
• First Word Revealed: Iqra (Read)
• In: 610 AD

Additional information:

• At the Age of 40 years 6 months
• Prescriber of wahi in Makkah: Sharjeel-ibn-Hasana Kandi
• First writer of Wahi in Quraish: Hazrat Zaid bin Sabit (RA)

Last verified on 27-04-2026

Explanation

• Machine Language is the lowest-level computer language, written entirely in binary code (0s and 1s).
• It is directly understood by the computer’s CPU without any translation.
• All higher-level languages (like C, Pascal, Basic) are converted into machine language before execution.

Last verified on 12-03-2026

Explanation

• The SUM function in MS Excel is used to add numbers from selected cells or ranges (e.g., =SUM(A1:A5)).
• It is one of the most commonly used functions for quick total calculations in spreadsheets.

Last verified on 26-05-2026

Explanation

• Amazon, Microsoft and Google are the three largest public cloud storage providers.
• Dropbox, eFolder, IBM etc. are examples of cloud service providers.

Last verified on 06-07-2026

Explanation

To calculate the average in Excel, you can use the AVERAGE function: 

• Formula =AVERAGE(number1, [number2], …) 
• Arguments: Number1 is required, and Number2 is optional 
• Example =AVERAGE(A1:A20) returns the average of the numbers in the range A1:A20

Last verified on 10-08-2026

Explanation

• A device driver is system software that enables the operating system to communicate with a specific hardware device.
• Examples include drivers for printers, keyboards, graphics cards, and network adapters.
• Without the correct driver, the operating system may not be able to use the hardware properly.
• Drivers act as a bridge between hardware and the operating system.

Last verified on 10-08-2026

Explanation

• GUI stands for Graphical User Interface.
• It uses icons, windows, and menus for interaction.
• It is easier to use than command-based interfaces.
• MS-DOS and Apple DOS are command-line interfaces.

Last verified on 11-04-2026