Introduction to Object-oriented Analysis and Design (Make-up Test) Spring 2020 1. (20 points) Important concepts in object-oriented design. (a) (2 points) Objects. An object in the object-oriented paradigm has to a physical thing. Is this statement true? Answer True or False. (b) (2 points) Interacting objects. An object is a collection of data and their associated behaviors. How to make two objects interact? (c) (2 points) UML diagrams. People translate UML diagrams mechanically to code. Is this statement true? Answer True or False. (d) (2 points) Timeboxed development iterations. Why is it important to make each iteration in Scrum timeboxed (e.g., fixed to 3 weeks)? What should you do if you are unable to finish the assigned sub-task in the current iteration? (e) (2 points) Abstraction. One principle of software design is called Abstraction. Some people thought that abstraction is equivalent to being not concrete. Why is this understanding inaccurate in the context of software design? Give a more accurate understanding of abstraction