APPLICATION LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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smtp Simple Mail Transfer Protocol
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21
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25
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23
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53
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Explanation:
Detailed explanation-1: -What is SNMP? Simple Network Management Protocol (SNMP) is a networking protocol used for the management and monitoring of network-connected devices in Internet Protocol networks.
Detailed explanation-2: -Sending emails over port 25 is not really secure and because this is the default port, so it been extensively used by the spammers too.
There is 1 question to complete.