Applications of Internet

               Hello guys i am Akash in this post  you will find all the information about Internet and it's applications. it gives basic knowledge of internet, this post are very helpfull so please read carefully.

1)  Internet :-

• Internet is a network of worldwide system of interconnect computers using standardized communication protocol, TCP/IP for data transmission and communication each other.
• Internet in broad sense refer to the network of commercial, educational, government and organizational network connected internationally with a use of standard Internet Protocol Suite serving user connected globally.

  1. Introduction To Internet

• Internet was conceived by Department of  Defense as a way to protect government communication system in the event of a military strike. The original network was named ARPANet (Advance Research Project Agency Network) Which evolved into a communication channel among military  personnel, University researchers and all those who were contributing to ARPA projects.
• Internet is a global network connecting over 100 countries that are linked to exchange data, information, news etc. Internet services can be accessed through commercial. Internet Service Provider (ISP). The computer and networks connecting to the Internet follow standards, known as protocols that govern the transmission of data over the network e.g TCP/IP (Transmission Control Protocol / Inter Protocol).

   2. Applications of Internet

The main applications of internet,

• E-mail
• Telnet
• FTP
• E-commerce
• E-business
• Video Conferencing

  1. E-mail

• Electronic Mail is commonly refer as E-mail. It was invented in 1972 by Ray Tomlinson.
• E-mail is a method of exchanging digital messages between one or more users. The messages could include text, images, audio, and video.
• It is not necessary to sender or recipients to be online simultaneously like in case of telephonic communication.

E-mail has three components:

      1. Message Envelope: E-mails are exchange using Simple Mail Transfer Protocol (SMTP) that communicates delivery parameters using message envelop.

      2. Message Header: Contains information about the sender, receiver and the route.

      3. Message body: Actual message part to be sent to one or more recipient. An email address has a structure like user@provider.domain e.g smart.technologee@gmail.com

  

 2. Telnet

• Telnet:  A network protocol used for bidirectional text oriented communication. Telnet uses virtual terminal for connecting to remote computer on the network.
• Virtual terminal is a service that allows hosts in multi-terminal network to connect with other hosts irrespective of terminal type and characteristics It uses TCP for transmitting data.
• Telnet does not use any encryption techniques to mask the data that transmitted nor ensure that communication between two desired host not intercepted.
• To address these security issues extension to telnet protocol provide Simple Authentication and Security Layer (SASL) and Transport Layer Security (TLS).

 3. FTP

• FTP: File transfer protocol is a standard application protocol that transfer a file from one host to another over the TCP network.
• The client and server are connect via connection which is called as controlled connection as it remains open until the session is active.
• The order connection open by client passive by or server i.e  active is called data connection which is use for transmitting data. The FTP protocol can work over an active or passive connection.
• FTP offers low security and data transferred over FTP is in text format and is not encrypted. Therefore it is not safe to transmit passwords or critical data over FTP.
• However the new versions use Secure Shell Protocol to avoid the issue of  security. Some examples of FTP, Remote FTP, Secure FTP etc.

 4. E-commerce

• Electronic commerce or E-commerce is trading or facilitating trading of products or services using computer networks, primarily internet.
• The history of E-commerce can be traced back to 1960 when the companies started using Electronic Data Interchange to exchange documents for conducting business.
• From 1980 the use of EDI grew and in 1990 eBay, Amazon and Flipkart revolutionized the e-commerce industry.
• Modern e-commerce builds on the technologies like mobile commerce, electronic fund transfer, Internet marketing , online transaction processing, electronic data interchange, automated data collection, social media marketing, target advertising etc.

Business using E-commerce may choose to use some or all of the following:

• Electronic markets for selling products to consumers - business to consumer (B2C).
• Provide business to business(B2B). electronic data interchange.
• Transfer of fund online.
• Using demographic data available on social media for target advertising.
• Business to government (B2G) information exchange.
• Marketing to potential customers using automated e-mail or SMS or voice mails.
• Automated data collection from social networking sites for digital marketing.

5. E-business

• E-business : Electronic Business or e-Business is the application of Information and Communication Technologies (ICT) to conduct essential activities of business using internet. The term e-business was coined by IBM in 1996.
• There are various e-business models, some of which include:

1. E-Commerce 
2. E-Shop 
3. E-Mails
4. Virtual communities

•  E-Auctions Applications of e-business can be categorized as:

1. Customer Relationship Management (CRM)
2.  Supply Chain Management (SCM).
3. Enterprise Resource Planning (ERP)
4.  Human Resource Management (HRM)

• E-business may make use of email, voice mail, system generated messaging, video conferencing etc. to enable collaborations and communication with the parties participating in the business.
• E-business caters to more users at a time and therefore faces a challenge of authentication, data integrity and data storage. Some useful methods of security are secure socket layer, firewall, data encryption, digital signatures etc.

6. Video conferencing

• Video Conferencing: Video conferencing also known as video conference, video teleconference is using a set of telecommunication technologies allowing more than one location to transmit and receive audio and video signals simultaneously.
• It was established in early 1970s as a part of AT&T Picturephone technology which allows visual collaboration in communication.
• Analog video conferencing uses closed circuit television systems connected with coaxial cables or radio wave while the modern day video conferencing uses video compression and is IP based allowing computer systems in video conferencing.
• Videotelephony which is popular today differs from video conferencing as it is designed to serve multiple individuais rather than multiple locations.

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