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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
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Do You Know?
Since there are five files to be transferred, there will be 1 control connection + 5 data connections = 6 total TCP connections.
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Do You Know?
FTP was designed to transmit commands only in English characters that are possible with 7 bits in ASCII.
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Do You Know?
The original specification for the File Transfer Protocol was written by Abhay Bhushan and published as RFC 114 on 16 April 1971.
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Are You Aware?
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.
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Do You Know?
Correct response code for the message “Can’t open data connection” is 425. Response code 452 is sent usually when  connection is suddenly closed.
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Explanation
The FTP session is started or ended using port 21 and actual data i.e. files are sent through port 20.
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Know This...
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.
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Explanation
FTP is out-of-band because the data connection is done separately through port 20 and control connection is done separately through port 21.
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For Your Info....
Port 20 is used in the active mode for FTP data transfer.
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Know This...
PASS command, preceded by the username, completes user’s identification for access control in an FTP session.
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