What is the best defense against Distributed DoS Attack?

A.
patch your systems.

B.
run a virus checker.

C.
run an anti-spy software.

D.
find the DoS program and kill it.

E.
None of the choices.

Explanation:
Distributed DoS Attack is a network-based attack from many servers used remotely to send packets.
Examples of tools for conducting such attack include TFN, TFN2K, Trin00, Stacheldracht , and
variants. The best defense is to make sure all systems patches are up-to-date. Also make sure your
firewalls are configured appropriately.