Explanation

• Windows + D shows or hides the desktop.
• It minimizes all open windows to display the desktop.
• Pressing Windows + D again restores the previously open windows.

Additional information:

• Windows + E: Opens File Explorer.
• Windows + M: Minimizes all windows.

Last updated by NA on 05-11-2026

Explanation

• Eternal means lasting forever or having no end.
• Everlasting and perpetual are synonyms of eternal.
• Eternal means ہمیشہ کے لیے قائم رہے گا یا کوئی انتہا نہیں ہے۔
• Everlasting means ہمیشہ کے لیے قائم رہے گا یا کوئی انتہا نہیں ہے۔

Last updated by NA on 05-11-2026

Explanation

• A dedicated computer is assigned one and only one specific task.
• It is designed to perform a particular function.
• Dedicated computers are commonly used in ATMs, traffic-control systems, and industrial machines.
• They are optimized for their specific purpose and may be part of an embedded system.

Last updated by NA on 05-11-2026

Explanation

• Title: Abu Al-Bashar (Father of Mankind)
• Prophet: Hazrat Adam (A.S)
• Wife: Hawwa (Eve)
• Status: First human being and first prophet
• Religion: Islam (submission to Allah)

Last updated by NA on 05-11-2026

Explanation

• ARP stands for Address Resolution Protocol.
• It is used in computer networks to map IP addresses to MAC addresses.
• ARP works within a local area network (LAN).
• It was defined in 1982 by RFC 826, which is Internet Standard STD 37.

Last updated by NA on 05-11-2026

Explanation

• DMA stands for Direct Memory Access.
• It is a method that allows an I/O device to transfer data directly to or from main memory (RAM).
• The CPU does not need to handle every individual byte of the transfer.
• DMA can improve data-transfer speed and reduce CPU workload.
• It is commonly used for devices such as disk drives, network cards, and sound cards.

Last updated by NA on 05-11-2026

Explanation

• Companions: Prophet Muhammad (PBUH) and Hazrat Abu Bakr (R.A.)
• Location: Cave of Thawr, near Makkah, Saudi Arabia
• Purpose: They took refuge there while escaping the Quraysh during the Hijrah.
• Stay: They remained in the cave for three days.
• Miracle: A spider's web at the entrance helped conceal the cave.

Additional information

Ghar-e-Saur:

• Other Name: Ghar-e-Thawr (Cave of Thawr)
• Mountain: Jabal Thawr (Mount Thawr)

Last updated by NA on 05-11-2026

Explanation

• DOS stands for Disk Operating System.
• It is an early type of computer operating system used to manage files and programs.
• It works through text-based commands (command line).
• A famous example is MS-DOS used in early PCs. 
• Dennis Ritchie is the father of MS-DOS.
• It was developed in 1982.

Last updated by NA on 05-11-2026

Explanation

• Wilhelm Conrad Rontgen discovered X-rays
• He was discovered on 8 November 1895.
• He got the Nobel Prize in Physics in 1901.

Additional questions

• The penetrating power of X-rays depends on their frequency

Last updated by NA on 05-11-2026

Explanation

• Accommodation means رہائش
• Accommodation refers to a place to live or stay (lodging).

Last verified on 08-06-2026