1. For how long can you perform work when your app is woken up for background refresh?

b) There is no way to be sure.

2. How do you enable background fetch for your app?

c) Both.

3. Which statement about the minimum refresh interval is true?

b) iOS will determine when it's the best time wake up your app. It will be no more often that you specify.

4. What did you use a dispatch group for in this chapter?

b) To be notified when all network calls were done.

5. When should you refactor your code?

c) Any time you think you can improve something.

6. What do you call the ID that is passed to the movieById case on the MovieDBHelper.Endpoint enum?

a) Associated value.