what is File Transfer Protocol?

what is File Transfer Protocol? If You Find The Answer Of This Question Then This Article Is Definitely For You. In This Article We Will Discuss About what is File Transfer Protocol? And FTP Server. So Without Wasting Time Let’s Know About The FTP.

what is File Transfer Protocol?

File Transfer Protocol is a standard network protocol used to exchange and manipulate files over a TCP / IP-based network, such as the Internet. FTP is built on a client-server architecture and utilizes separate control and data connections between the client and server applications. FTP is used with user-based password authentication or anonymous user access. 

Applications were originally interactive command-line tools with standardized command syntax, but graphical user interfaces have been developed for all desktop operating systems in use today.  The Trivial File Transfer Protocol (TFTP) is a similar, but not simplified, interoperable, and unproven version of FTP. 
The file transfer protocol is a standard network protocol used to convert and manipulate files.  The FTP client that comes with Windows NT or 2000 is a character-based client.  Many FTP servers worldwide allow users to place log-in and down-load files on them anywhere on the Internet. 

The main competitor for FTP is HTTP (HyperText Transfer Protocol) and the day is not far when sites will run HTTP servers instead of FTP servers.  This is because HTTP servers can do whatever FTP servers do and do it more efficiently.
As the popularity of the web continues to grow, downloading software is becoming even easier.  You can use your web browser and click on links to files;  Behind the scenes, FTP is often downloading files.  One problem with downloading files over the Internet is that some files are so large that it can take a long time to download them. 

As a way to speed up file transfers on FTP servers and save space, files are usually compressed.  Many different methods are used to compress files.  After downloading the files, you will need to run decomposition software such as PK UNZIP to decompose the files to use.  ES FTP executes on top of the TCP / IP stack and uses the OSI protocol to enable users and applications to transfer files between network stations.  Once you have a compressed file such as data.zip, you have to unzip or decompress it to go into the setup file and install the program.  You can use the WinZip file to uncap this file. 

FTP Server

Similar to a web server, the Internet also has FTP servers installed, many organizations use FTP servers to handle the distribution of files.  When a user links to something to download, the link actually redirects to FTP instead of HTTP.  Some files in the FTP server may be accessible to the general public, while others are accessible only by the user. 

To separate the general public from more private users, the FTP server is divided into two parts:
* Anonymous server
* Non-anonymous server

1. Anonymous server: Anonymous server is the most common use of FTP, the Internet file transfer protocol.  FTP sites that allow anonymous FTP do not require a password for access.  All you need to do is log in as anonymous and enter your e-mail address as a password (for their records). 
2. Non-anonymous server: If you use a non-anonymous server, you will log in yourself and provide your password.

  FTP clients

to start an FTP session, you run the FTP client software and you can contact the FIP server from where you want to download the files, you can use the FTP client software available in Windows 2000.  The FTP client talks to the FTP server.  FIP uses TCP to handle communications and create a session between the two hosts.  The FTP daemon runs on the FTP server.  The daemon handles all FTP transactions. 

When the FN FIP client contacts a server, the daemon will ask for an account number (or username) and password.  Many FTP sites allow anonymous FTP as described earlier.  When you connect some FTP clients will automatically log on to the FTP server for you so you will not be asked to log on.  This is because your client software does this automatically for you. 

When you log on to the FTP server, a connection called a command link is opened between your computer and the server.  This link is used to send commands from your computer to the server, and messages and information are sent back from the server to your computer.

  When you want to change directories on the FTP server, your client software sends an instruction to the FTP daemon using the command link.  The daemon changes directories and.  Then the command sends a list of files to that directory via the link.  On your client software, you will see a list of files in the new server directory.  When you want to download a file, a request is issued on the command zinc.  When you issue a command to download a file, a second connection is opened, called a data connection or data link.  This connection can be opened in one of the following modes:
* ASCII mode
* Binary mode
* Line mode

1. ASCII mode: ASCII mode is used to send text files and change things like line feed and carriage return. 
2. Binary Mode: Binary mode is used to send binary files and returns files through untouched,

3. Line mode: Line mode FTP I is used to send text files by line or it is similar to ASCII mode but with additional features.  The file is downloaded from the server to your computer via a data connection. After downloading, the data link closes automatically.  After that, the command link remains open, then you can change directories or download more files. When you finish the whole job, you close the command link.  Then, you are no longer selected to the FTP server.

Connecting with FTP

typical FTP session starts as a client, when you connect to an FTP program and connect to an FTP site,  Enter your login information before connecting or after connecting you will be asked to do it. 

If you are using a web browser to connect to the Anonymous site, the browser will prompt you to connect to the FTP site;  You need to know the IP of an account on the FTP server. In others is, you need to log in with a username and password so that the server knows who you are, Y accessible FTP sites expect you to use an account called anonymous. To connect to an FTP site, do this:
1. Enter the URL of the FTP site in the address box and click Go.  For example, to connect to an FTP site, rtfm.mit.edu/pub/ enters the URL as follows.  ftp://rtfm.mit.edu/pub/
2. The browser opens the specified sites. 
3. Display the directory that contains the file you want to download. 
4. Right-click on the file and choose Copy to folder.
5. Once you save the file to the computer’s drive, you can open it using appropriate software, depending on the type of file.  If it is a doc file, you can use Microsoft Word to open this file.


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Source: I&WT, Wikipedia
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