An administrator attempts a traceroute but receives a “Destination Unreadable” message. Which
protocol is responsible for that message?

A.
RARP

B.
RUDP

C.
ICMP

D.
SNMP

Explanation:
This question is to examine the command ping.
The ping command is often used to check the network connectivity.
Ping sends an ICMP echo request to the destination and tells whether a corresponding ICMP echo
reply message is received or not.