Which of the following DoS attacks use ICMP? (Choose two)

A.
SYN attack

B.
Smurf attack

C.
Ping of death

D.
UDP flood

E.
NMAP

Explanation:
The ping-of-death attack sends an ICMP packet so large that some systems crash before they can process all of the information. The Smurf attack also manipulates ICMP. The other answers are incorrect. NMAP is a port scanning and banner grabbing tool.