Review for Final Exam in App Creators L. 1&2

1. To add a button to a screen in App Inventor, where would the Button component be dragged to?

• The Designer Viewer

• The Blocks Viewer

• The Properties pane

• The Media drawer

To program a Button component in App Inventor, where would the code be added?

• The Designer Viewer

• The Blocks Viewer

• The Properties pane

• The Media drawer

Which of the following describes the role of the navigator in pair programming?

• Controls the keyboard

• Helps point out coding errors to the driver

• Controls the mouse

• Sits in another room and wait for their turn

Which of the following describes the role of the driver in pair programming?

• The person who writes the code in a computer program when two programmers are working together.

• Helps point out coding errors to the driver

• Observes or reviews each line of code

• Sits in another room and wait for their turn

Which of the following describes a type of list whose items can change during the runtime of a program?

• static list

• dynamic list

• variables list

• random list

Which of the following describes a type of list that contains pre-set data that does not change while the app is running?

• static list

• dynamic list

• variables list

• random list

Use the image above to answer the question.

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Which of the following event handlers will play an audio file when a check box is clicked in App Inventor?

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Use the code above to answer the question. Which of the following statements correctly describes the event for the event handler shown above?

• A button being clicked

• The accelerometer sensing shaking

• The app displaying the message “I’m shaking!”

An app developer wants to create the code for a checkbox component that when selected (checked), turns a label component’s background color to red; when not checked turns the label component’s background color to blue. Which flowchart is the correct way to show the algorithm for this behavior?

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