CERTIFIED-IN-CYBERSECURITY · Question #79
CERTIFIED-IN-CYBERSECURITY Question #79: Real Exam Question with Answer & Explanation
The correct answer is A: 7. Simple Mail Transport Protocol (SNMP) is an application layer protocol that operates at level 7. Level 3 corresponds to the network layer. There are no OSI layers above level 7. The number 25 presumably refers to the TCP/IP port of the SMTP protocol. The number 23, in turn, refer
Question
The SMTP protocol operates at OSI Level:
Options
- A7
- B23
- C25
- D3
Explanation
Simple Mail Transport Protocol (SNMP) is an application layer protocol that operates at level 7. Level 3 corresponds to the network layer. There are no OSI layers above level 7. The number 25 presumably refers to the TCP/IP port of the SMTP protocol. The number 23, in turn, refers to the TCP/IP port of the Telnet protocol.
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