Unit 3 - Intro to App Design - Comp. Science

Which of the following best describes the purpose of a design specification?

• Tracking errors that arise through user testing

• Documenting comments that will need to be added to a program

• Describing the requirements for how a program will work or users will interact with it

• Listing detailed questions that will be asked of users during interviews

What will the "width" of the "leftButton" be when the program ends?

• 100

• 500

• 1000

If the user does NOT click the button, what will the width of the leftButton?

• 1000

• 100

• 500

In ________ commands run in the order they are written

Programmers use comments to:

• debug issues in code

• document how code was written for other programmers to use

• decide which components are important to use

What is the purpose of an onEvent?

• triggers code to run after user interacts with screen

• always sets properties for the screen

• never shows anything to the user

What is important in syntax?

• parentheses

• spelling

• quotation marks

• how fast you type it

The following program is run. Then the user clicks the "topButton" button ONCE. What will be displayed in the console?

• cat bird dog

• dog cat bird

• cat dog bird

• bird cat dog

Which line of code in this program is MOST likely to result in an error?

• Line 1

• Line 2

• Line 3

• Line 4

Which of the following BEST describes the differences between sequential and event-driven programming?

• In sequential programming commands run one at a time. In event-driven programming all commands run at the same time

• In sequential programming commands run faster than in event-driven programming.

• In sequential programming each command is run many times in sequence. In event-driven programming all commands are run a single time as an event.

• In sequential programming commands run in the order they are written. In event-driven programming some commands run in response to user interactions or other events.