Explanation: NASA stands for National Aeronautics and Space Administration, which is the United States government agency.

Explanation: HTTP stands for HyperText Transfer Protocol, which is the foundation of data communication for the World Wide Web.

Explanation: FBI stands for Federal Bureau of Investigation, which is the domestic intelligence and security service of the United States.

Explanation: UNICEF stands for United Nations International Children's Emergency Fund, which is a UN agency responsible for providing humanitarian and developmental aid to children worldwide.

Explanation: GPS stands for Global Positioning System, which is a satellite-based navigation system that provides location and time information anywhere on Earth.

Explanation: WHO stands for World Health Organization, which is a specialized agency of the United Nations responsible for international public health.

Explanation: HTML stands for HyperText Markup Language, which is the standard markup language for documents designed to be displayed in a web browser.

Explanation: ATM stands for Automated Teller Machine, which is an electronic banking outlet that allows customers to complete basic transactions without the aid of a branch representative or teller.

Explanation: PDF stands for Portable Document Format, which is a file format developed by Adobe to present documents consistently across multiple devices and platforms.

Explanation: SIM stands for Subscriber Identity Module, which is a portable memory chip used in mobile phones to store data unique to the subscriber.

Explanation: USB stands for Universal Serial Bus, which is an industry standard for cables, connectors, and protocols for connection, communication, and power supply between computers and electronic devices.

Explanation: LAN stands for Local Area Network, which is a computer network that interconnects devices within a limited area such as a residence, school, or office building.

Explanation: GIF stands for Graphics Interchange Format, which is a bitmap image format that supports both animated and static images.

Explanation: AI stands for Artificial Intelligence, which is the simulation of human intelligence in machines that are programmed to think and learn.

Explanation: PIN stands for Personal Identification Number, which is a numeric password used to authenticate a user to a system.

Explanation: Wi-Fi stands for Wireless Fidelity, which is a technology that allows electronic devices to connect to a wireless local area network (WLAN).

Explanation: RAM stands for Random Access Memory, which is a type of computer memory that can be accessed randomly, allowing for quick read and write access.

Explanation: ISBN stands for International Standard Book Number, which is a unique numeric commercial book identifier.

Explanation: VPN stands for Virtual Private Network, which is a service that allows users to connect to the internet securely and privately over a public network.

Explanation: LED stands for Light Emitting Diode, which is a semiconductor light source that emits light when current flows through it.

Explanation: URL stands for Uniform Resource Locator, which is the address used to access websites and resources on the internet.

Explanation: 3G stands for Third Generation, which refers to the third generation of mobile telecommunications technology.

Explanation: CCTV stands for Closed-Circuit Television, which is a system of cameras that transmit signals to a specific set of monitors.

Explanation: In telecommunications, ATM stands for Asynchronous Transfer Mode, which is a network protocol that transmits data in packets or cells of a fixed size.

Explanation: LTE stands for Long-Term Evolution, which is a standard for wireless broadband communication for mobile devices and data terminals.

Explanation: OTT stands for Over-The-Top, which describes the delivery of media content over the internet without requiring users to subscribe to a traditional cable or satellite pay-TV service.

Explanation: MFP stands for Multifunction Printer, which is a device that combines the functionality of a printer, scanner, copier, and sometimes fax into one machine.

Explanation: CNG (Compressed Natural Gas) is a type of fuel that is stored under high pressure and used in vehicles as an alternative to gasoline or diesel

Explanation: QR Code stands for Quick Response Code. It stores information that can be accessed instantly, which is where the term "quick response" comes from.

Explanation: ICSE stands for Indian Certificate of Secondary Education, an examination conducted by the Council for the Indian School Certificate Examinations (CISCE), known for its comprehensive curriculum.

Explanation: CBSE stands for Central Board for Secondary Education, a national-level education board in India responsible for managing public and private schools.