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Internet Connections and Its Protocols - R D Sivakumar
This document discusses internet connections and protocols. It explains that an internet connection requires a computer, telephone line, modem, and internet service provider (ISP). The ISP maintains the user's account using a unique username and password. Common web browsers like Chrome, Firefox, and Internet Explorer are used to access websites by entering URLs. Protocols like TCP/IP, HTTP, HTTPS, FTP, Telnet, and SMTP allow devices to communicate over the internet and transfer files and emails. TCP/IP breaks data into packets and ensures intact delivery. HTTP is used for communication between web servers and clients, while HTTPS provides security. FTP transfers files, Telnet enables remote login, and SMTP transfers emails between systems.
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- 1. INTERNET CONNECTIONS ANDITS PROTOTOCOLS R.D.SIVAKUMAR, M.Sc.,M.Phil.,M.Tech., Assistant Professor of Computer Science & Bell Institute Sivakasi – 626 124. Mobile: 099440-42243 e-mail : rdsivakumarstaff@gmail.com
- 2. To use anInternet in the simplest way. Getting Connected to Internet ISP is used for maintain user account. A Computer A Telephone line A Modem Internet Service Provider or ISP User name - An unique name that identifies the user. Password - A secret code that prevents users account. E-mail address- Unique address that you can send or receive E-mails. Access telephone number - Internet users can use this number to connect to the service provider. Dialog box for connecting To the Internet Entering the URL (URL means path)
- 3. WEB BROWSER Toaccess the Internet Example of Web Browser Google Chrome IE Mozilla Firefox Opera etc.,
- 4. Navigation Button Backbutton – To go back to the previous link Forward button – To move the next page. Stop button- Sometimes the link is not necessarily work, then click the stop button and move back without wasting time. Refresh button- To refresh the web page Home button- The home button reverts to the home page of the website. Back Button Forward button Stop button Refresh Button Home Button
- 5. INTERNET PROTOCOLS A protocolcan be one rule or a set of rules and standards that allow different devices to hold conversations.
- 6. Internet is apacket switching network. The various packets are sent through a communication by different routes. Once the packets are arrive at the destination, the receiving computer re-assembles the packets in proper sequence. The packet switching is suitable for data transmission. The software that is responsible for making the Internet function efficiently is TCP/IP. TCP/IP is made up of two components. TCP stands for transmission control protocol and IP stands for Internet Protocol. TCP breaks up the data to be sent into little packets. It guarantees that any data sent to the destination computer reaches intact. It makes the process appear as if one computer is directly connected to the other providing what appears to be a dedicated connection. IP is a set of conventions used to pass packets from one host to another. It is responsible for routing the packets to a desired destination IP address. COMMUNICATION PROTOCOLS
- 7. HTTP HTTP stands forHypertext Transfer Protocol. To communicate between web client and web server. Example http://www.google.com COMMUNICATION PROTOCOLS
- 8. HTTPS HTTPS stands forHypertext Transfer Protocol Security. To secure communicate between web client and web server. It is used for web security Example https://www.google.com COMMUNICATION PROTOCOLS
- 9. FTP FTP stands forFile Transfer Protocol. It is used for uploading and downloading the information Software Filzila COMMUNICATION PROTOCOLS
- 10. TELNET Telnet means remotelogin. COMMUNICATION PROTOCOLS
- 11. SMTP SMTP stands forSimple Mail Transfer Protocol. It is used to transferring the mail from one system to another system. COMMUNICATION PROTOCOLS
- 12. R.D.SIVAKUMAR, M.Sc.,M.Phil.,M.Tech., Assistant Professorof Computer Science Bell Institute Sivakasi – 626 141. Mobile: 099440-42243 e-mail : rdsivakumarstaff@gmail.com