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INTERNET APPLICATION AND SERVICES

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ICT Applications

But what does one do with the Internet? May be four things, basically: mail, discussion groups, long-distance computing, and file transfers. Internet mail is (e-mail or electronic mail), much faster as compared to normal postal mail. One can also send software and certain forms of compressed digital image as an attachment. News groups or discussion groups facilitate Internet user to join for various kinds of debate, discussion and news sharing. Long-distance computing was an original inspiration for development of ARPANET and does still provide a very useful service on Internet. Programmers can maintain accounts on distant, powerful computers, execute programs. File transfer service allows Internet users to access remote machines and retrieve programs, data or text.

(a) Internet Applications

We can roughly separate internet applications into the following types: online media, online information search, online communications, online communities, online entertainment, e-business, online finance and other applications. The internet is treated as one of the biggest invention. It has a large number of uses..

1. Communication

2. Job searches

3. Finding books and study material

4. Health and medicine

5. Travel

6. Entertainment

7. Shopping

8. Stock market updates

9. Research

10. Business use of internet: different ways by which intenet can be used for business are:

• Information about the product can be provided can be provided online to the the customer .

• Provide market information to the business

• It help business to recruit talented people

• Help in locating suppliers of the product .

• Fast information regarding customers view about companies product

• Eliminate middle men and have a direct contact with contact with customer .

• Providing information to the investor by providing companies back ground and financial information on web site.


(b) Services of Internet

FTP Diagram

File Transfer Protocol, is an Internet utility software used to uploaded and download files. It gives access to directories or folders on remote computers and allows software, data and text files to be transfer between different kinds of computers. FTP works on the basis of same principle as that of Client/ Server. FTP “Client” is a program running on your computer that enables you to communicate with remote computers. The FTP client takes FTP command and sends these as requests for information from the remote computer known as FTP servers. To access remote FTP server it is required, but not necessary to have an account in the FTP server. When the FTP client gets connected, FTP server asks for the identification in terms of User Login name and password of the FTP client (Fig. 3.1). If one does not have an account in the remote FTP server, still he can connect to the server using anonymous login.

Using anonymous login anyone can login in to a FTP server and can access public archives; anywhere in the world, without having an account. One can easily Login to the FTP site with the username anonymous and e-mail address as password.

(i) Objectives of FTP :  Provide flexibility and promote sharing of computer programs, files and data

 Transfer data reliably and more efficiently over network

 Encourage implicit or indirect use of remote computers using Internet

 Shield a user from variations in storage systems among hosts.

(ii) The basic steps in an FTP session  Start up your FTP client, by typing ftp on your system’s command line/’C>’ prompt (or, if you are in a Windows, double-click on the FTP icon).

 Give the FTP client an address to connect. This is the FTP server address to which the FTP client will get connected

 Identify yourself to the FTP remote site by giving the Login Name

 Give the remote site a password

 Remote site will verify the Login Name/Password to allow the FTP client to access its files

 Look directory for files in FTP server

 Change Directories if requird

 Set the transfer mode (optional);

 Get the file(s) you want, and

 Quit.

(c) Telnet (Remote Computing)

Telnet or remote computing is telecommunication utility software, which uses available telecommunication facility and allows you become a user on a remote computer. Once you gain access to remote computer, you can use it for the intended purpose. The TELNET works in a very step by step procedure. The commands typed on the client computer are sent to the local Internet Service Provider (ISP), and then from the ISP to the remote computer that you have gained access. Most of the ISP provides facility to TELENET into your own account from another city and check your e-mail while you are traveling or away on business.

The following steps are required for a TELNET session

 Start up the TELNET program

 Give the TELNET program an address to connect (some really nifty TELNET packages allow you to combine steps 1 and 2 into one simple step)

 Make a note of what the “escape character” is

 Log in to the remote computer,

 Set the “terminal emulation”

 Play around on the remote computer, and

 Quit.

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