Explanation

• ORACLE is a Database Management System (DBMS) used for storing, retrieving, and managing data in databases.
• ORACLE is specifically designed to handle database operations.

Last verified on 08-09-2026

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

• 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

• 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

• 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

Explanation

• The shortcut key to saving any document in MS office is Ctrl+S.

Additional information:

Explanation

• Calibri was the default font in MS Word 2007.
• The default font size was 11 points.
• Calibri replaced Times New Roman as the default font in Word 2007.
• It was part of Microsoft's ClearType Font Collection.

Last verified on 26-08-2026

Explanation

• Referencing means referring to or retrieving data from another cell or worksheet.
• In Excel, a reference to another sheet can be written as =Sheet2!A1.
• This allows data from one worksheet to be used in another worksheet.
• It is especially useful for linking related data across multiple sheets.

There are Three types of Cell reference in Excel.

1. Relative
2. Absolute
3. Mixed

Last verified on 26-08-2026