Once the top-down design approach is taken, the ________ approach is useful in programming.

Which of the following does not complete the sentence correctly? An interface .

a. forces classes that implement it to declare all the abstract interface methods. b. can be used in place of an abstract class when there is no default implementation to inherit. c. is declared in a file by itself and is saved in a file with the same name as the interface followed by the .java extension. d. can be instantiated.

A collection of hardware and software components that help you accomplish many different tasks is a(n) ____.

A. hard drive B. PC C. printer D. console