The process of using your contacts, such as friends, relatives, and business associates for obtaining job information is called ____________________.

The push operation throws a StackException when it tries to ______.

a) add an item to an empty stack b) add an item to an array-based implementation of a stack that is already full c) delete an item from an array-based implementation of a stack that is already full d) delete an item from an empty stack

SSL/TLS is used for ________ VPNs.

host-to-host remote access Both host-to-host and remote access Neither host-to-host nor remote access