APPLICATION LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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FTP uses ____ and ____ port no data and Control connection
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20, 21
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19, 20
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21, 22
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22, 23
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Explanation:
Detailed explanation-1: -FTP uses control and data channels, each using a separate TCP port. Port 21 is for the control channel, and port 20 is for the data channel. Learn how these two channels are used. You may already know that, when FTP commands cross the wire, they use TCP port 21 by default.
Detailed explanation-2: -Businesses need to think about using port 21 FTP to transfer files in their organization due to the unencrypted nature of FTP transmissions. Using FTP can expose sensitive information and network credentials to an attacker when transmitting data across the network or the Internet.
There is 1 question to complete.