The Internet is migrating to Internet Protocol version 6 (IPv6), which uses _____ addresses to provide for many more devices.

We wish to keep track of the last ten flights that leave a gate of an airport. We make a FlightHistory class with an array that can store ten flight numbers. Since many more than ten flights will eventually leave the gate, to keep track of the last ten flights, we should use a:

A. overwriting array B. looping array C. Johnson array D. circular array

Objects have the property of ___________—although objects may know how to commu- nicate with one another across well-defined interfaces, they normally are not allowed to know how other objects are implemented.

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