You find the following entries in your web log. Each shows attempted access to either root.exe or
cmd.exe.
What caused this?

A.
The Morris worm

B.
The PIF virus

C.
Trinoo

D.
Nimda

E.
Code Red

F.
Ping of Death

Explanation:
The Nimda worm modifies all web content files it finds. As a result,any user
browsing web content on the system,whether via the file system or via a web server,may
download a copy of the worm. Some browsers may automatically execute the downloaded
copy,thereby,infecting the browsing system. The high scanning rate of the Nimda worm may also
cause bandwidth denial-of-service conditions on networks with infected machines and allow
intruders the ability to execute arbitrary commands within the Local System security context on
machines running the unpatched versions of IIS.