Internet & Web — Set 2

Correct Answer: A. Extensible Markup Language

XML is a markup language designed to store and transport data in a format that is both human and machine-readable. It is widely used in web services to exchange data between different systems. Unlike HTML, XML allows users to define their own custom tags.

Correct Answer: A. Simple Mail Transfer Protocol

SMTP is the standard protocol used for sending email messages across the internet. It handles the transmission of outgoing mail from the sender's client to the mail server. Most modern email clients use SMTP for sending and IMAP or POP3 for receiving.

Correct Answer: B. Virtual Private Network

A VPN creates a secure and encrypted connection over a less secure network, such as the public internet. It helps protect user privacy by masking their IP address and physical location. Organizations often use VPNs to allow employees to access remote office resources securely.

Correct Answer: D. Local Area Network

A LAN is a computer network that interconnects computers within a limited area such as a residence, school, or office. It typically offers high data transfer speeds and low latency. Ethernet and WiFi are the most common technologies used for LANs.

Correct Answer: D. Secure Sockets Layer

The correct answer is 'Secure Sockets Layer'. SSL is a standard security technology for establishing an encrypted link between a web server and a browser. It ensures that all data passed between them remains private and integral. While technically succeeded by TLS, the term SSL is still commonly used.

Correct Answer: C. Transmission Control Protocol

TCP is a core protocol of the Internet Protocol Suite that provides reliable and ordered delivery of data packets. It manages the connection between the sender and receiver to ensure data integrity. It works closely with the Internet Protocol (IP) to transmit data.

Correct Answer: C. Wireless Local Area Network

WLAN is a local area network that uses wireless communication to link devices. It allows users to move around a building while staying connected to the network. WiFi is the most popular implementation of a WLAN.

Correct Answer: A. Graphics Interchange Format

GIF is a bitmap image format that supports both static and animated images. It is widely used on the web due to its small file size and support for transparency. Steve Wilhite and his team at CompuServe developed this format in 1987.

Correct Answer: B. JavaScript Object Notation

The correct answer is 'JavaScript Object Notation'. JSON is a lightweight data-interchange format that is easy for humans to read and write. It is primarily used to transmit data between a server and a web application. It has largely replaced XML in many modern web APIs.

Correct Answer: B. Media Access Control

A MAC address is a unique identifier assigned to a network interface controller for communications on a network. It is hard-coded into the hardware of the device by the manufacturer. Unlike IP addresses, MAC addresses are generally permanent.