Internet and Its Uses:

• The term 'Internet' has been coined by the combination of two words namely "inter-connectivity" and "networks". Therefore, it is called the network of networks. It is a vast pool of resources and offers different opportunities to different people.
• The internet links are computer networks all over the world so that users can share resources and communicate with each other. Some computers have direct access to all the facilities on the internet such as the universities. And other computers, for example, privately owned have indirect links through a commercial service provider who offers some or all of the internet facilities.

In the Question:

The vast network of computers that connects millions of people all over the world is called ________________

The Answer is Internet.

With the Internet, it's possible to access almost any information, communicate with anyone else in the world, and do much more. You can do all of this by connecting a computer to the Internet, which is also called going online.

Hence the Option D is Correct.

Real-time communications (RTC) is any mode of telecommunications in which all users can exchange information instantly or with negligible latency or transmission delays. In this context, the term real-time is synonymous with live.

In RTC, there is always a direct path between the source and the destination. Although the link might contain several intermediate nodes, the data goes from source to destination without being stored in between them. In contrast, asynchronous or timeshifting communications, such as email and voicemail, always involve some form of data storage between the source and the destination. In these cases, there is an anticipated delay between the transmission and receipt of the information.

In the Question:

Conference (Netscape), Net meeting (Internet Explore) enables (choose the option that best describes)               

The Answer is Live real time conferencing.Real-time communications can take place in half-duplex or full-duplex modes.

Hence the Option D is Correct.

Uses of Internet:

1. Email: By using internet, we can communicate in a fraction of second with a person who is sitting in the other part of the world. Today, for better communication, we can avail the facilities of e-mail.  We can chat for hours with our loved ones. There are many messenger services and e-mail services offering this service for free.

2. Information: The biggest advantage that internet offers is information. The internet and the World Wide Web have made it easy for anyone to access information. Any kind of information on any topic is available on the Internet.

3. Business: World trade has seen a big boom with the help of the internet, as it has become easier for buyers and sellers to communicate and also to advertise their sites. Nowadays, most of the people are using online classified sites to buy, sell or advertising their products or services. A classified site saves lot of money and time, so this is chosen as a medium by most of the people to advertise their products

4. Social Networking: Today, social networking sites have become an important part of the online Community Almost all users use it for personal and business purposes. It is an awesome place to network with many entrepreneurs who come here to begin building their own personal and business brands.

5. Shopping: In today's busy life, most of us are interested in shopping online. Nowadays, almost everything can be bought by the use of internet. In countries like USA, most of the consumers prefer to shop from home, We have many shopping sites on internet like amazon.com Dealsglobe.com, etc. People also use the internet to auction goods. There are many chine auction sites where anything can be sold.

6. Entertainment: On internet, we can find all forms of entertainment from watching films to playing games online. Almost anyone can find the right kind of entertainment. When people surf the Web, there are numerous things that can be found. Music, hobbies, news and more can be found and shared on the Internet. There are numerous games that may be downloaded from the Internet for free.

In the Question:

Which is not the feature of Internet ?

The Answer is Designing. CAD (computer-aided design) is the use of computer-based software to aid in design processes.

Hence the Option D is Correct.