Draw a UML class diagram showing an inheritance hierarchy containing classes that represent different types of clocks. Show the variables and method names for two of these classes.

Both Windows 7 and Linux have built-in port filtering capabilities

Indicate whether the statement is true or false.

Every #if construct

a) must end with #end. b) always affects code throughout the entire body of the program. c) is used for debugging. d) must end with #endif.