A smurf attack attempts to use a broadcast ping on a network; the return address of the ping may be a valid system in your network. Which protocol does a smurf attack use to conduct the attack?
a. TCP
b. IP
c. UDP
d. ICMP
Answer: D
A smurf attack attempts to use a broadcast ping (ICMP) on a network. The return address of the ping may be a valid system in your network. This system will be flooded with responses in a large network.