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ICMP and IGMP belong to which layer of the OSI model?
Correct Answer: B
Explanation/Reference: Explanation: ICMP and IGMP work at the network layer of the OSI model. Incorrect Answers: A: There is no Datagram Layer in the OSI model. C: ICMP and IGMP do not belong to the Transport layer of the OSI model. TCP and UDP are examples of protocols working at the transport layer. D: ICMP and IGMP do not belong to the Transport layer of the OSI model. ARP, OSOF, and MAC are examples of protocols workings at the data link layer. References: https://en.wikipedia.org/wiki/Network_layer