A virus or worm can have a payload that installs a(n) ____________________ door or trap door component in a system, which allows the attacker to access the system at will with special privileges.

A key characteristic of viruses is their ability to lurk in a device for days or months, quietly replicating themselves.

Answer the following statement true (T) or false (F)

To serve as a visual reminder that the structure or class name is not a variable, structure names and class names should ___________.

a. Begin with uppercase letters b. Begin with an underscore c. End with a letter d. all of the above