A(n) ________ takes advantage of file transport methods, such as e-mail, to spread on its own.

Which of the following statements is correct?

a. Every line in a program must end with a semicolon. b. Every statement in a program must end with a semicolon. c. Every comment line must end with a semicolon. d. Every method must end with a semicolon. e. Every class must end with a semicolon.

The ____ rate measures the number of times that site visitors click a banner or pop-up ad to connect to the advertiser's site.

A. pop-up B. packet C. click-through D. cookie