Video-Conferencing:It is a communication technology that integrates video and audio to connect users anywhere in the world as if they were in the same room.Each user or Group of users who are participating in a video conference typically must have a Computer/Mobile Phone,a camera,a microphone ,a video screen and a sound System.It is also known as Teleconferencing.

In the Question:

An electronic meeting is knows as _________________

The Answer is Teleconferencing.Terms such as audio conferencing, telephone conferencing and phone conferencing are also sometimes used to refer to teleconferencing.

Hence the Option D is Correct.

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.

History of Internet:

The Internet has its root in the ARPANET system of the( Advanced Research project Agency Network)of the U.S Department of Defense. ARPANET was the first WAN and had only four sites in 1969.The internet evolved from the basic ideas of ARPANET for interconnecting computers and was initially used by research organizations and universities to share and exchange information.In 1989,the U.S. Government lifted restriction on the use of the internet and allowed it to be used for commercial purpose as well.since then,the internet has rapidly grown to become the world's largest network. It now interconnects more than 30,000 networks,allowing more than 10 million computers and more than 50 Million computer users in more than 150 Countries around the World to communicate each other.The internet continues to grow at a rapid race.

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.

In the Question:

Which of the following statement is Incorrect?

(i)The term 'Internet' has been coined by the combination of two words .

(ii)ARPANET was the Second  WAN and had only two sites in 1969.

(iii)E-mail is also known as Electronic Mail.

The Answer is Only (ii).

Hence the Option C is Correct.

History of Internet:

The Internet has its root in the ARPANET system of the( Advanced Research project Agency Network)of the U.S Department of Defense. ARPANET was the first WAN and had only four sites in 1969.The internet evolved from the basic ideas of ARPANET for interconnecting computers and was initially used by research organizations and universities to share and exchange information.In 1989,the U.S. Government lifted restriction on the use of the internet and allowed it to be used for commercial purpose as well.since then,the internet has rapidly grown to become the world's largest network. It now interconnects more than 30,000 networks,allowing more than 10 million computers and more than 50 Million computer users in more than 150 Countries around the World to communicate each other.The internet continues to grow at a rapid race.

In the Question:

What is the Full form of ARPANET?

The Answer is Advanced Research project Agency Network.

Hence the Option B is Correct.