Pictures used as a fill for shapes cannot have their transparency reset

If the item with a given search key does not exist in a table, the tableRetrieve operation returns ______.

a) the value -1 b) the value 0 c) the value false d) a null reference

A_______ is created by establishing a secure tunnel through which data passes between multiple networks over the Internet.

a) virtual private network. b) private network. c) visual private network. d) None of the above.