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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

Network Security Concepts

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.

Topics

#OSI Model#SMTP#Network Protocols#Application Layer

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