Software Design

Question 1

5 key design principles

Answer 1

Separation of concerns, single responsibility, least knowledge, DRY, minimize upfront design

Question 2

1 design principle associated with these terms: distinct features, minimize functional overlap, achieve high cohesion and low coupling

Answer 2

Separation of Concerns

Question 3

YAGN, BDUF, what key design principle do these refer to?

Answer 3

Minimize upfront design

Question 4

What principle states that each component or module should be responsible for only a specific feature or functionality, or aggregation of cohesive functionality?

Answer 4

Single Responsibility

Question 5

What principle is known as the Law of Demeter (LoD)?

Answer 5

Principle of Least Knowledge

Question 6

What principle recommends that functionality should not be duplicated in any other component?

Answer 6

Don’t Repeat Yourself (DRY)

Question 7

5 Design Practices

Answer 7

1. Choose design patterns that are consistent within each layer,
2. do not duplicate functionality within an application,
3. choose composition over inheritance,
4. establish a coding style and naming convention,
5. maintain system quality measures via automated Q/A techniques.