Networking Basics

 Networking Basics - part 3

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🔵 FTP 

✳️ FTP stands for File transfer protocol.

✳️ FTP is a standard internet protocol provided by TCP/IP used for transmitting the files from one host to another.

✳️ It is mainly used for transferring the web page files from their creator to the computer that acts as a server for other computers on the internet.

✳️It is also used for downloading the files to computer from other servers.

🔵 SMTP

✳️ SMTP stands for Simple Mail Transfer Protocol.

✳️ SMTP is a set of communication guidelines that allow software to transmit an electronic mail over the internet is called Simple Mail Transfer Protocol.

✳️ It is a program used for sending messages to other computer users based on e-mail addresses.

✳️ It provides a mail exchange between users on the same or different computers, and it also supports:

💠 It can send a single message to one or more recipients.

💠 Sending message can include text, voice, video or graphics.

💠 It can also send the messages on networks outside the internet.

💠 The main purpose of SMTP is used to set up communication rules between servers. The servers have a way of identifying themselves and announcing what kind of communication they are trying to perform. They also have a way of handling the errors such as incorrect email address. For example, if the recipient address is wrong, then receiving server reply with an error message of some kind.

🔵 Telnet

✳️ The main task of the internet is to provide services to users. For example, users want to run different application programs at the remote site and transfers a result to the local site. This requires a client-server program such as FTP, SMTP. But this would not allow us to create a specific program for each demand.

✳️ The better solution is to provide a general client-server program that lets the user access any application program on a remote computer. Therefore, a program that allows a user to log on to a remote computer. A popular client-server program Telnet is used to meet such demands. Telnet is an abbreviation for Terminal Network.

✳️ Telnet provides a connection to the remote computer in such a way that a local terminal appears to be at the remote side.

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