An attack in which the attacker spoofs the source IP address in an ICMP ECHO broadcast packet so it seems to have originated at the victims system, in order to flood it with REPLY packets, is called a:

A.
SYN flood attack

B.
Smurf attack

C.
Ping of Death attack

D.
Denial-of-service attack

Explanation:
Although it may cause a denial of service to the victims system, this
type of attack is a Smurf attack. A SYN flood attack uses up all of a systems
resources by setting up a number of bogus communication sockets on the victims
system. A Ping of Death attack is done by sending IP packets that exceed the maximum
legal length.