QUESTION 13 What is encapsulation? A statement of the conditions that must exist at the beginning of a function and the conditions at the end of the function. A characteristic of a method that performs one will defined operation. A technique that allows you to reuse classes you have already defined for a related purpose. A technique that bundles data of an object with the methods that operate on that data. QUESTION 14 An ADT and a data structure are the same thing. True False QUESTION 15 Which 3 terms refer to the same thing: data flow, precondition, prototype polymorphism, prototype, CHUD function header, declaration, prototype function, method, algorithm Data abstraction results in a wall of ADT operations between data structures and the client programs that access the data within the data structures. True False QUESTION 17 You cannot correctly write client code of the ADT without seeing the implementation file for the class methods. True False QUESTION 18 A(n) contains at least one method that is declared as birtual and has no implementation. virtual class base class abstract class CHUD class What language is used to describe classes at various stages of development? Venn Diagrams UML (unified modeling language) Structure Charts ERD (entity relationship diagram) QUESTION 20 An operation contract documents how a method can be used and what limitations it has. True False