Explanation

• The shortcut key for Undo (last action reverse) is Ctrl + Z in most computer systems.
• It is used to cancel the last mistake or action.

Additional information:

• Ctrl + P = Print
• Ctrl + Y = Redo
• Ctrl + S = Save
• Ctrl + C = Copy command
• Ctrl + V = Paste
• Ctrl + C = Copy
• Ctrl + X = Cut
• Ctrl + Y = Redo

Last verified on 10-06-2026

Explanation

• CPU stands for Central Processing Unit.
• It is the main part of a computer that processes all instructions.
• It is considered the brain of the computer system.
• It performs all calculations and decision-making tasks.
• It controls the operations of all hardware and software.
• It is located on the motherboard.

Last verified on 10-06-2026

Explanation

• MS-DOS: Microsoft Disk Operating System
• Developed by: Microsoft
• Designed for: x86-based personal computers
• Interface: Command-line interface (CLI)
• IBM version: IBM PC DOS
• DOS: A term also used for MS-DOS-compatible operating systems.

Explanation

• Definition: Uses 2 or more CPUs.
• Benefit: Faster processing.
• Main Memory: Processors usually share RAM.
• Purpose: Handles multiple tasks efficiently.

Additional information:

• Uniprocessor: One processor
• Multithreaded: Multiple threads
• Multiprogramming: Multiple programs in memory

Explanation

• A network is a group of two or more computers connected together.
• It allows computers to share information and resources.
• Resources may include files, printers, applications, and internet connections.

Additional information:

• Router: A device that directs data between networks.
• Server: A computer that provides services or resources to other computers.
• Pipeline: A mechanism for processing or transferring data.

Last verified on 28-09-2026

Explanation

• IP stands for Internet Protocol.
• It is a set of rules used to address and route data between devices on a network.
• Every device on an IP network can be identified using an IP address.

Additional information:

• IPv4: Uses 32-bit addresses.
• IPv6: Uses 128-bit addresses.
• Example of IPv4: 192.168.1.1

Last verified on 27-09-2026

Explanation

• Ctrl + K → Insert Hyperlink

Additional information:

• Ctrl + P → Print
• Ctrl + F2 → Print Preview
• Ctrl + H → Replace dialog box
• Ctrl + D → Font dialog box

Last verified on 06-07-2026

Explanation

• Increase the font size. Ctrl + Shift + >

Additional information:

• Decrease the font size: Ctrl + Shift + <
• Increase the font size by 1 point: Ctrl + ]
• Decrease the font size by 1 point: Ctrl + [
• Ctrl + Shift + F: Change the font
• Open the Font dialog box to change the font: Ctrl + Shift + F

Verified & Updated

Explanation

• PowerPoint is used for Create presentations from scratch or a template.
• Add text, images, art, and videos.
• Select a professional design with PowerPoint Designer.

Last verified on 03-04-2026

Explanation

• Ctrl + N shortcut key is used to create a new, blank document
• Save Document: Ctrl + SO
• Open Document: Ctrl + O
• Print Document: Ctrl + P (or Ctrl+F2 for Preview)
• Undo/Redo: Ctrl + Z (Undo),Ctrl + Y (Redo)
• Bold/Italic/Underline: Ctrl + B, Ctrl + I, Ctrl + U
• Center Alignment: Ctrl + E
• Insert Hyperlink: Ctrl + K
• Find/Replace: Ctrl + F (Find), Ctrl + H (Replace)

Last updated question by NA on 07 May 2026