The Chief Executive Officer (CEO) of an Internet service provider (ISP) has decided to limit the
company’s contribution to worldwide Distributed Denial of Service (DDoS) attacks. Which of the
following should the ISP implement? (Select TWO).
A.
Block traffic from the ISP’s networks destined for blacklisted IPs.
B.
Prevent the ISP’s customers from querying DNS servers other than those hosted by the ISP.
C.
Block traffic with a source IP not allocated to the ISP from exiting the ISP’s network.
D.
Scan the ISP’s customer networks using an up-to-date vulnerability scanner.
E.
Notify customers when services they run are involved in an attack.