What are different types of Internet services | ICT-2 Tutorial

Internet is defined as an information superhighway to access information over the web (OR)

Internet is a worldwide global system of interconnected computers.

              Internet services allow is to access huge amount of information such as text, graphics, sound and software over the internet. Following diagram shows the four different categories of internet services.

Communication Services: -

                  There are various communication services available that offer exchange of information with individual (or) groups. The following table gives a brief introduction to these services.

•  Electronic Mail: Used to send electronic message over the Internet.
• Telnet: Used to log on to a remote computer that is attached to internet.
• Newsgroup: Offers a forum for people to discuss topics of common interests.
• Internet relay chat (IRC): Allows the people from all over the world to communicate in real time.
• Mailing Lists: Used to organize group of internet users to share common information through e- mail.
• Internet Telephony: Allows the internet users to talk across internet to any pc equipped to receive the call.
• Instant Messaging: Offers real time chat between individuals and group of people

       Eg: Yahoo Messenger, MSN messenger

Information Retrieval Services:

    There exist several information retrieval services offering easy to information present on the internet the following table gives a brief introduction to services.

1.     First Transfer protocol (FTP): Enable the users to transfer files.

2.    Archie: It’s updated database of public PTP sites and their content. It helps to search a file by its name.

Gopher: Used to search, retrieve and display documents on remote sites

Web Services

Web Services allow exchange of information between applications on the web using the web services, applications can easily interact with each other. The web services are offered using concept of “Utility Computing.”

World Wide Web (WWW)

www is also known as “W3”. It offers a way to documents spread over the several severs over the internet. These documents may contain texts, graphics, audio, video, hyperlinks.  The hyperlinks allow the users to navigate between the documents.