Internet Services - Internet Technologies

What are Internet Services?

A huge amount of information such as graphics, text, sound and software are the kind of services that one has access. Below is the diagram showing four different categories of Internet Services.

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Communication Services

Many communication services are available which provides the individuals or groups with exchange of information. Below table brief us on the introduction to these services.

S.N.

Service Description

1

Electronic Mail
Used to send electronic message over the internet.

2

Telnet
Used to log on to a remote computer that is attached to internet.

3

Newsgroup
Offers a forum for people to discuss topics of common interests.

4

Internet Relay Chat (IRC)
Allows the people from all over the world to communicate in real time.

5

Mailing Lists
Used to organize group of internet users to share common information through e-mail.

6

Internet Telephony (VoIP)
Allows the internet users to talk across internet to any PC equipped to receive the call.

7

Instant Messaging
Offers real time chat between individuals and group of people. Eg. Yahoo messenger, MSN messenger.

Information Retrieval Services

There are many services used for retrieving the information present on the internet. Below table brief us to these services.

S.N.

Service Description

1

File Transfer Protocol (FTP)
Enable the users to transfer files.

2

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

3

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

4

Very Easy Rodent Oriented Netwide Index to Computer Achieved (VERONICA)
VERONICA is gopher based resource. It allows access to the information resource stored on gopher’s servers.

Web Services

Information can be easily exchanged between applications on the web using web services.
The web services are offered using concept of Utility Computing.

World Wide Web (WWW)

Documents containing texts, graphics, audio, video and hyperlinks etc are spread over many servers on the internet. These are accessed through WWW known as W3. Hyperlinks are used to navigate to the other documents.

Video Conferencing

This method of communication is done by two-way audio and video transmission using telecommunication technologies.

Modes of Video Conferencing

POINT-TO-POINT
Two locations are conference directly using this mode.
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MULTI-POINT
Multi-point Control Unit (MCU) is used to connect more than two locations in this mode.
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