You have been called to investigate a sudden increase in network traffic at XYZ. It seems that the
traffic generated was too heavy that normal business functions could no longer be rendered to
external employees and clients. After a quick investigation, you find that the computer has

services running attached to TFN2k and Trinoo software. What do you think was the most likely
cause behind this sudden increase in traffic?

A.
A distributed denial of service attack.

B.
A network card that was jabbering.

C.
A bad route on the firewall.

D.
Invalid rules entry at the gateway.

Explanation:
In computer security,a denial-of-service attack (DoS attack) is an attempt to make a
computer resource unavailable to its intended users. Typically the targets are high-profile web
servers,and the attack attempts to make the hosted web pages unavailable on the Internet. It is a
computer crime that violates the Internet proper use policy as indicated by the Internet
Architecture Board (IAB). TFN2K and Trinoo are tools used for conducting DDos attacks.