16.
In order to skip or seek to a desired location in a sound or video, which property becomes helpful?

17.
Which of following shows a better runtime performance for coalescing functionality, using functions, and using objects?

18.
Which of following shows a poorer runtime performance for coalescing functionality, using functions, and using objects?

19.
In how many modes can the Closure compiler be run?

20.
What is the purpose of the advanced mode in the Closure compiler?