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File Transfer Protocol - How Much Do You Know

Take this questionnaire to decide your knowledge level about the File Transfer Protocol.
Pragya Singh Oct 31, 2020
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Since there are five files to be transferred, there will be 1 control connection + 5 data connections = 6 total TCP connections.
Do You Know?
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FTP was designed to transmit commands only in English characters that are possible with 7 bits in ASCII.
Do You Know?
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The original specification for the File Transfer Protocol was written by Abhay Bhushan and published as RFC 114 on 16 April 1971.
Do You Know?
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Stream mode is default mode of FTP, in which TCP fragments data into segments, and after the transmission is complete, converts it back to stream of bytes.
Are You Aware?
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Correct response code for the message “Can’t open data connection” is 425. Response code 452 is sent usually when  connection is suddenly closed.
Do You Know?
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The FTP session is started or ended using port 21 and actual data i.e. files are sent through port 20.
Explanation
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An FTP connection includes a server and a client wanting to share data files. The server can transfer files with multiple clients at the same time while the client communicates with only one server at a time.
Know This...
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FTP is out-of-band because the data connection is done separately through port 20 and control connection is done separately through port 21.
Explanation
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Port 20 is used in the active mode for FTP data transfer.
For Your Info....
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PASS command, preceded by the username, completes user’s identification for access control in an FTP session.
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