A security analyst notices an unusual amount of traffic hitting the edge of the network. Upon examining the
logs, the analyst identifies a source IP address and blocks that address from communicating with the network.
Even though the analyst is blocking this address, the attack is still ongoing and coming from a large number of
different source IP addresses. Which of the following describes this type of attack?


A. DDoS
B. Privilege escalation
C. DNS poisoning
D. Buffer overflow