The Exception class and the Error class are subclasses of the ___________________ class.

A variable listed in a header is known as a(n) ____ parameter.

A. actual B. local C. formal D. function

A device that is located near the front-end, and allows many users to share a single front-end port, is known as

a. a line splitter b. a remote intelligent controller c. a port-sharing device d. a multiplexer