Explanation

• Cache Memory — the buffer between CPU and RAM.

  • Stores frequently used data for quick CPU access
  • Faster but smaller than RAM
  • Falls between the CPU and main memory
  • Has levels (L1, L2, L3) — L1 is fastest/closest to CPU
  • Reduces memory access time, boosting performance

Additional information:

• RAM = the main memory itself
• ROM = read-only, holds firmware (BIOS)
• SRAM = a type used to build cache, not the buffer itself

Last updated 07-09-2026 by NA

Explanation

MAN (Metropolitan Area Network): City or district coverage

• LAN (Local Area Network): Small area, e.g., home, office
• WAN (Wide Area Network): Covers countries or continents, e.g., Internet
• PAN (Personal Area Network): Very small area, e.g., devices connected via Bluetooth

Explanation

• RAM stands for Random Access Memory.
• It is a type of fast, temporary computer memory.
• It is essentially short-term memory.
• It is the hardware in a computing device where the operating system (OS).

Last verified on 26-04-2026

Explanation

• Page orientation refers to the direction in which a page is displayed or printed.
• Portrait is vertical in orientation.
• Landscape is horizontal in orientation.
• Both orientations are commonly available in word-processing applications such as Microsoft Word.

Last verified on 07-09-2026

Explanation

• Ctrl + C in MS Word is used for the Copy command.

Additional information:

• Ctrl + R → Align text to the right
• Ctrl + E → Center align text
• Ctrl + J → Justify paragraph
• Ctrl + L → Align text to the left
• Ctrl + Q → Remove paragraph formatting (reset to default left alignment)

Last verified on 10-06-2026

Explanation

• USB stands for Universal Serial Bus.
• USB is a standard used to connect and transfer data between electronic devices.
• A USB flash drive is a data storage device that uses flash memory with an integrated USB interface.
• Ajay Bhatt is widely credited as a key figure in the development of USB technology in the 1990s.

Last verified on 05-09-2026

Explanation

• .pptx → Default PowerPoint Presentation (2007 and later)
• ppt → PowerPoint Presentation (97–2003)

Additional information:

• .ppsx → PowerPoint Show (opens directly as a slideshow)
• .potx → PowerPoint Template
• .pptm → Macro-enabled Presentation

Last verified on 11-07-2026

Explanation

• LAN stands for Local Area Network.
• It is a network that connects devices within a limited geographical area.
• LAN is commonly used in homes, schools, laboratories, university campuses, and office buildings.
• It provides high-speed communication and resource sharing between connected devices.

Additional information:

• MAN: Metropolitan Area Network – Covers a city or metropolitan area
• WAN: Wide Area Network – Covers a large geographical area (countries/continents)

Last verified on 07-07-2026

Explanation

• RAM and Cache are volatile memories.
• It means their data is lost when power is turned off.
• Volatile memory requires continuous power to retain data.
• RAM is used for running programs and storing temporary data.
• Cache is a high-speed memory that stores frequently used data for the CPU.

Additional information:

• ROM is non-volatile and retains data without power.

Last verified on 16-02-2026

Explanation

• URL stands for Uniform Resource Locator.
• It is a specific type of Uniform Resource Identifier (URI).
• Domain: World Wide Web
• First published: 1994
• Latest version: Living Standard, 2023

Used:

• Web page (HTTP/HTTPS)
• File transfer (FTP)
• Email (mailto)
• Database access (JDBC)

Last verified on 08-06-2026