Sometimes, contracted employees are self-employed or are employees of an organization hired for a specific, one-time purpose. These people are typically referred to as ____________________.

Most commercial Web sites ____________________ sensitive information sent to and from the site during the payment phase of an e-commerce purchase.

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

Classes from which objects can be instantiated are called ___________ classes.

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