SSCP: Systems Security Certified PractitionerDemo

By ISC · Question Mode

QuestionQ773

Network and Communications Security

Which of the following protocols is not implemented at the Internet layer in the TCP/IP protocol model?

  • A User datagram protocol (UDP)
  • B Internet protocol (IP)
  • C Internet Group Management Protocol (IGMP)
  • D Internet control message protocol (ICMP)
Explanation

UDP provides transport-layer services over IP, including application-to-application datagram delivery using port numbers. IP is the core Internet-layer protocol, while ICMP and IGMP are Internet-layer control and multicast-management protocols.

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