Explanation

• Facial recognition is a prime example of Artificial Intelligence (AI).
• It uses AI algorithms to detect, analyze, and identify human faces.
• The technology compares facial features with stored data for identification or verification.
• It is widely used in security systems, smartphones, airports, and surveillance.

Last verified on 07-07-2026

Explanation

• RAM 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.

Additional information:

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

Last verified on 16-02-2026

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

• 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

• Bluetooth is a Personal Area Network (PAN) technology used for short-range communication.
• It connects devices within a range of about 10 meters.
• It is commonly used in headphones, mobile phones, and laptops.
• It works without cables using wireless signals.

Last verified on 24-06-2026