Even with careful planning of your website, you are still likely to experience costly and time-consuming mistakes.

What object oriented feature can we use to have a single test program, with one set of method calls in which the user can decide which bag implementation (array- or link-based) needs testing?

a. copy constructor b. polymorphism c. toVector d. the case statement

Discuss the advantages and disadvantages of performing backups from a device installed on the server and over the network.

What will be an ideal response?