Postfix notation requires the use of parentheses to enforce operator precedence.

The_______ is a global standard for communications between wireless devices.

a) Wireless Application Protocol. b) Wireless Standard Protocol. c) WML Protocol. d) None of the above.

A(n)____ is an image that, when the mouse passes or rolls over it, will change to another image.

a. image map b. rollover image c. hotspot d. hyperlink