Back Orifice is an example of:
a legitimate remote control software.
a backdoor that takes the form of an installed program.
None of the choices.
“A backdoor may take the form of an installed program (e.g., Back Orifice) or could be in the form
of an existing “”legitimate”” program, or executable file. A specific form of backdoors are rootkits,
which replaces system binaries and/or hooks into the function calls of the operating system to hide
the presence of other programs, users, services and open ports.”