Explanation

• 1 billion bytes = 1 Gigabyte (GB).

Additional information:

• 1 GB = 1,000,000,000 bytes (10⁹ bytes).
• 1 MB = 1,000,000 bytes (10⁶ bytes).
• 1 TB = 1,000,000,000,000 bytes (10¹² bytes).

Last verified on 09-08-2026

Explanation

• GUI stands for Graphical User Interface.
• It is a type of user interface that allows users to interact with electronic devices using icons, windows, menus, and buttons instead of typing commands.
• The first GUI was developed at Xerox PARC in the early 1980s.

Additional information:

• CLI – Command Line Interface
• CUI – Character User Interface
• VUI – Voice User Interface
• NUI – Natural User Interface

Last verified on 03-07-2026

Explanation

• LAN is ideal for connecting computers in closely located buildings, such as within a campus or office block.
• LAN stands for Local Area Network.
• It offers high speed and cost-effective connectivity over short distances.

Last verified on 19-04-2026

Explanation

• Print Preview is important when taking a print because it shows how the document will look on the printed page.
• It helps check page layout, margins, text, and overall appearance before printing.
• Print Preview helps identify mistakes and avoid unnecessary printouts.

Additional information:

• Print Command is used to start the printing process.
• Page Setup is used to adjust paper size, margins, and page orientation.

Last verified on 09-08-2026

Explanation

• TCP/IP was developed in the 1970s through the pioneering work of Vint Cerf and Robert E. (Bob) Kahn.
• They are widely recognized as the “Fathers of the Internet”.
• TCP provides reliable, ordered delivery of data, while IP handles addressing and routing of packets.
• The foundational TCP/IP work was published in 1974.

Last verified on 09-08-2026