All questions of Basics of Internet for UGC NET Exam

Designing is not a feature of the Internet itself. The Internet provides services like email, newsgroups, and chat, but designing refers to the process of creating websites or digital content.

WWW stands for World Wide Web, which is an information system where documents and other web resources are identified by URLs.

An IP address is a numerical label assigned to devices connected to a network. The correct format is four groups of numbers separated by dots, with each number ranging from 0 to 255.

The Internet is a vast network of computers that connects millions of users around the world, enabling communication, data sharing, and access to information.

Incorrect Statement Explanation

Recurring expenditure on e-mail communication is very high:
- This statement is incorrect because the cost of sending emails through the Internet is relatively low compared to traditional mail services.
- Email communication is a cost-effective way to communicate with individuals or groups over long distances.
- Businesses and individuals can send emails at a fraction of the cost of traditional postal services, making it a preferred mode of communication for many.

Other Statements Explanation

It is the largest online information system:
- This statement is correct as the Internet is a vast network that connects millions of computers worldwide, making it the largest online information system.

It provides a dependable mode for sending e-mail:
- This statement is correct as email communication over the Internet is reliable and efficient, allowing individuals and businesses to send messages quickly and securely.

It has triggered cyber-crimes due to misuse:
- This statement is correct as the Internet has opened up opportunities for cyber-crimes such as hacking, phishing, and identity theft due to the misuse of online platforms and services.

Understanding Internet Service Interfaces
The question asks about which Internet service offers a multimedia interface to resources. The correct answer is the World Wide Web (option 'B'). Here's why:
Multimedia Capabilities
- The World Wide Web is designed to display a wide range of multimedia content, including:
- Text
- Images
- Videos
- Audio
- It allows for interactive content through technologies like HTML, CSS, and JavaScript, enabling richer user experiences.
Accessing Resources
- Through web browsers, users can access various resources hosted on web servers.
- The URL (Uniform Resource Locator) system helps users locate these resources easily.
Comparison with Other Options
- FTP (File Transfer Protocol)
- Primarily used for transferring files between computers.
- Does not provide a multimedia interface; it's more about file management.
- Domain Name
- Serves as a human-readable address for websites.
- It does not offer any multimedia features or functionalities on its own.
- Web Browser
- While it is essential for accessing the World Wide Web, it is not an Internet service itself.
- It acts as a tool to navigate and display web content.
Conclusion
The World Wide Web stands out as the primary Internet service that offers a comprehensive multimedia interface, making it the correct answer to the question. It integrates various types of content and provides an interactive platform for users.

Internet Explorer is a web browser developed by Microsoft that allows users to access and navigate the Internet.

Understanding URL: Definition and Purpose
A URL, or Uniform Resource Locator, is a specific type of Uniform Resource Identifier (URI) that provides a means to locate a resource on the internet. It acts as the address of a resource, allowing users to access websites, files, or other assets online.

Key Components of a URL
- Protocol: Indicates how data is transferred (e.g., HTTP, HTTPS, FTP).
- Domain Name: Represents the server hosting the resource (e.g., www.example.com).
- Path: Specifies the exact location of the resource on the server (e.g., /folder/page.html).
- Query Parameters: Offer additional data to the server (e.g., ?id=123).

Significance of the Term "Uniform Resource Locator"
- Uniform: Implies a standardized format for identifying resources, ensuring consistency across the web.
- Resource: Refers to any entity that can be accessed online, including web pages, images, and videos.
- Locator: Indicates the function of the URL as a navigational tool that directs users to a specific resource.

Conclusion
In summary, the correct answer to the question regarding what URL stands for is option 'B' - Uniform Resource Locator. Understanding URLs is essential for navigating the web, as they provide the necessary information to access and retrieve resources efficiently.

The Internet was developed in the 1960s, primarily as a research project funded by the U.S. Department of Defense, leading to the creation of ARPANET.

Understanding Email Protocols
When it comes to downloading emails from a server to a computer, various protocols are employed. Among them, the most relevant for this purpose is POP, which stands for Post Office Protocol.

What is POP?
POP is designed specifically for retrieving emails from a mail server. Here’s a breakdown of how it functions:
- **Download and Store**: POP allows email clients to download emails from the server to the local device. Once downloaded, emails are typically removed from the server, making them accessible offline.
- **User Control**: Users have the option to configure their email client to either delete emails from the server after downloading or keep a copy on the server for future access.

Comparison with Other Protocols
- **SMTP (Simple Mail Transfer Protocol)**: SMTP is used for sending emails rather than downloading. It works as the outgoing mail server, handling the transmission of emails sent from client to server.
- **FTP (File Transfer Protocol)**: FTP is not used in email contexts; it’s designed for transferring files between computers over a network.
- **TCP (Transmission Control Protocol)**: While TCP is a foundational communication protocol that supports various applications, including email, it is not specifically dedicated to email retrieval.

Why Choose POP?
- **Offline Access**: One of the primary advantages of POP is the ability to access emails without an internet connection once downloaded.
- **Simplicity**: POP is straightforward and effective for users who primarily access their emails from a single device.
In summary, POP is the correct answer for downloading emails to a computer, as it is specifically designed for this purpose, unlike SMTP, FTP, or TCP.

With POP3 and IMAP accounts, users need to connect to the server to send and receive emails, but they can read and compose emails offline.

URL (Uniform Resource Locator) is the term used for a web page address, which specifies the location of a resource on the Internet.

A website is a collection of web pages, and the very first page that appears when opening a website is called the home page.

The first web browser was called World Wide Web, later renamed Nexus, and it was developed by Tim Berners-Lee.

HTTP (Hypertext Transfer Protocol) is the standard protocol for accessing and transmitting web pages on the Internet.

TCP/IP is necessary to connect to the Internet as it defines how data is transmitted and received over the network.

FTP stands for File Transfer Protocol, which is used to transfer files between computers over a network.

An Intranet is a private network used within an organization, allowing employees to securely share information and resources.

The Internet allows users to perform a variety of activities such as sending emails, viewing web pages, and connecting to servers globally.

TCP/IP (Transmission Control Protocol/Internet Protocol) is the suite of communication protocols used to connect devices on the Internet.