APPLICATION LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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FTP uses the services of ____
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IP
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TCP
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PPP
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UDP
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Explanation:
Detailed explanation-1: -FTP uses two ports: The control connection (where commands are sent) is TCP port 21, and Active FTP uses a data connection (where data is transferred) that originates from TCP port 20.
Detailed explanation-2: -1.1 Packet filtering characteristics of FTP. FTP uses two separate TCP connections: one to carry commands and results between the client and the server (commonly called the command channel), and the other to carry any actual files and directory listings transferred (the data channel).
Detailed explanation-3: -The most striking difference is that FTP uses two parallel TCP connections to transfer a file, a control connection and a data connection.
There is 1 question to complete.