ICMP is a low-level Internet operation message protocol that is used between gateways and hosts. It uses several message codes. What would a code 3 mean?
A. Communication administratively prohibited
B. IP header was bad
C. TTL expired
D. Host unknown, network unreachable
Answer:D
ICMP is a low-level Internet operation message protocol that is used between gateways and hosts. It uses several message codes. What would a code 3 mean?
A. Communication administratively prohibited B. IP header was bad C. TTL expired D. Host unknown, network unreachable