True/False Questions on Data Abstraction

1. To implement an ADT in Python, you must use classes.

2. If the programming language supports classes, you should usually use them when implementing an ADT.

3. Class variables can be shared by all instances of a class.

7. Subclasses inherit methods defined in their superclasses.

8. Operator overloading allows programs to compute results that could not be computed without operator overloading.

Multiple Choice

2.Which parts of the program description will be the most helpful in identifying possible objects for a system design?

a) adjectives

b) nouns

c) verbs

d) all of the above

7. If you are designing a class to represent a polynomial, which of the following should be instance variables?

a) the coefficients

b) a value to evaluate with the polynomial

c) the result of evaluating the polynomial with a specific value

d) all of the above

8. If you are designing a class to represent a polynomial, which of the following should be class variables?

a) the coefficients

b) a value to evaluate with the polynomial

c) the result of evaluating the polynomial with a specific value

d) none of the above

9. When writing unit tests using the Python unittest framework the test code is written as

a) a number of functions

b) a separate class the subclasses your class

c) a separate class that subclasses unittest.TestCase

d) part of the class you are testing