Internet Protocol

              Protocol...

        A set of rules which govern how computers can communicate.

The client and servers have to communicate to each others over a network   environment.

                   File Transfer Protocol (FTP)  

An Internet standard for transfering files.

  Many computers on the Internet  you to copy files to your computer. This is called downloading.

          Use FTP to copy file from your computer to another computer on the internet. This is called uploading.

So,it’s responsible for allowing files to be copied between device.

           The Function Of Various Software (FTP) client 

Is used to connect two computer over the internet.

The user of one computer can transfer files and perform file commands on the other computer.

FTP is a primary Internet protocol and serves as a building block for many more sophisticated internet tool.

žIt is much more dependable and faster than sending files as email attachments.

     

FTP Site

Like a large filling cabinet.

Virtual key to get into and FT site is the user ID and password.

If the creater willing to give everyone access to the file the userID is anonymous and the password is your email address.

       E-mail Protocol

        

   Ø Sending e-mail

                                            - SMTP Simple Mail Transfer Protocol

     Ø Receiving e-mail

                                    - POP(POP3) Post Office Protocol

                                         - IMAP Internet Mail Access Protocol

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HTTP (Hypertext Transfer Protocol)

ØA special protocol which application like browsers and web server use to talk to each other.

ØHTTP sessions have four step to communicating across the web

I.Make the connection

II.Request a document

III.Respond to a request

IV.Close the connection

Ø The HTTP protocol is designed to permit intermediate network elements to improve or enable communications between clients and servers.

ØHTTP Resources are identified and located on the network by Uniform Resource Identifiers (URIs) or , more specifically, Uniform Resource Locators (URLs)—using the http or https URI schemes

HTTP Comunication

Transmission Control Protocol/Internet Protocol(TCP/IP

• The essential features of this protocol involve
• Identifying sending and receiving devices
• Reformatting information for transmission across the Internet.

Identification
Every computer on the Internet has a unique numeric address called an IP address
( Internet Protocol Address).
The internet uses IP address to deliver email and to locate Web sites.
A system was develop to convert text based address to numeric IP Address.This system uses a domain names server(DNS).

Reformatting
The message will reformatted or broken down into small parts called packets.
Each packets is sent separately over the internet.
At the receiving end, the packet are reassembled into the correct order.