Which statements are true regarding ICMP packets? (Choose two.)
A.
They acknowledge receipt of TCP segments.
B.
They guarantee datagram delivery.
C.
TRACERT uses ICMP packets.
D.
They are encapsulated within IP datagrams.
E.
They are encapsulated within UDP datagrams.
ICMP (Internet Control Message Protocol) is an error-reporting protocol network devices like routers use to generate error messages to the source IP address when network problems prevent delivery of IP packets.
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Different types of ICMP messages are identified in the ICMP header. The ICMP messages typically report errors in the processing of datagrams.
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The format of data that can be recognized by IP is called an IP datagram. It consists of two components, namely, the header and data, which need to be transmitted. The fields in the datagram, except the data, have specific roles to perform in the transmission of data.
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