An interesting point in the B-tree traversal logic is that as we traverse the tree, using a variation of the inorder traversal, we must ____ each entry.

Which statement is true when a base class has protected instance variables?

a) A derived class object can assign an invalid value to the base class’s instance variables, thus leaving the object in an inconsistent state. b) Derived class methods are more likely to be written so that they depend on the base class’s data implementation. c) We may need to modify all the derived classes of the base class if the base class implementation changes. d) All of the above.

Which of the following are characteristics of a good algorithm:

A. Improved quality of the solution. B. Improved maintainability of a solution. C. Reduced implementation time. D. All of these are characteristics of a good algorithm.