One defense against DoS and DDoS SYN flood attacks is to use a flood guard. A flood guard is a feature that controls a device's tolerance for unanswered service requests and helps to prevent a DoS attack. _________ can be prevented with loop protection.
a. IP address spoofing
b. Man-in-the-middle attacks
c. Denial of service (DoS) attacks
d. Broadcast storms
Answer: D