Which of the following optical storage media has the greatest storage capacity?

If a function is called more than once in a program, the values stored in the function's local variables do not _________ between function calls.

a. persist b. execute c. communicate d. change e. None of these

The decision as to which process' pending I/O request shall be handled by an available I/O device:

A) ?long-term scheduling ? B) ?short-term scheduling C) ?I/O scheduling ? D) ?medium-term scheduling