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Answer the following statements true (T) or false (F)

1) An abstract class may be derived from another abstract class. 2) Objects of abstract base classes can be instantiated. 3) An abstract class cannot have instance data and non-abstract methods. 4) Attempting to instantiate an object of an abstract class is a logic error.

Answer the following statements true (T) or false (F)

1. The successful use of law enforcement depends much more on technical skills than on people skills. 2. Software is an example of real property. 3. An example of a patent from the computer security realm is the RSA public-key cryptosystem. 4. A servicemark is the same as a trademark except that it identifies and distinguishes the source of a service rather than a product. 5. Concerns about the extent to which personal privacy has been and may be compromised have led to a variety of legal and technical approaches to reinforcing privacy rights.