A(n) ____________ class is used to define nodes that form dynamic data structures, which can grow and shrink at execution time.

________________ clauses exist in acceptable use policies so that companies can discipline employees whose computer activities interfere with productivity.

Fill in the blank(s) with the appropriate word(s).

How many levels are there in a hierarchy chart?

a. 1 b. 2 c. 3 d. As many as necessary. e. None of the above.