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.