Which of the following ICMP message types are used for destinations unreachables?
A.
0
B.
3
C.
11
D.
13
E.
17
Explanation:
Type 3 messages are used for unreachable messages. 0 is Echo Reply, 8 is Echo request, 11 is time exceeded, 13 is timestamp and 17 is subnet mask request. Learning these would be advisable for the test.
b
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