APPLICATION LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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FTP stands for File Transfer Protocol
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FTP uses two parallel TCP connections
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FTP sends its control information in-band
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FTP sends exactly one file over the data connection
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Detailed explanation-1: -Identify the incorrect statement regarding FTP. 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.
Detailed explanation-2: -The correct answer is Persistent TCP connection, non-persistent TCP connection. File Transfer Protocol or FTP is an application layer protocol and is used to communicate and transfer files between different systems on a TCP/IP protocol over the internet.
Detailed explanation-3: -True, FTP is a TCP/IP protocol that transfers files between FTP servers and clients.
Detailed explanation-4: -FTP sends its control information, which includes user identification, password, and put/get commands, on one connection, and sends data files on a separate parallel connection. Because it uses a separate connection for the control information, FTP uses out-of-band control.