Which of the following statements are true about ICMP messages? (Multiple Choice)
Which of the following statements are true about ICMP messages? (Multiple Choice)
ICMP (Internet Control Message Protocol) messages are used for error reporting and network diagnostics. ICMP can record time-information which includes the original time, packet receiving time, and packet sending time, making option A correct. ICMP messages are indeed encapsulated in IP packets but not at the transport layer, confirming option B as true. While ICMP includes error messages, control messages, and request/response messages, it does not include update messages making option C incorrect. Furthermore, ICMP does support redirection, falsifying option D, and it can be used to detect a path's MTU, invalidating option E.
I THINK 'A' SHOULD BE INCLUDED ALSO