AP CSP Unit 3 Review

Consider these three statements: I. Interviewing potential users of the app. II. Writing the entire program code before testing any parts of it. III. Observing users attempting to use the app. Which of the above actions would usually be helpful in designing and developing the app?

• I and II only
• I and III only
• II and III only
• I, II, and III
• None of these would usually be helpful

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 “background-color” of the “bottomButton” be when the program is finished running?

• red
• orange
• blue
• green

If the user DOES click the button what color will “topButton” be when this program finishes running?

• red
• blue
• green
• orange

The following program is run. The user DOES NOT click the "topButton" button. What will be displayed in the console?

• cat bird dog
• cat dog

• cat dog bird
• dog cat

The following program is run. Then the user clicks the “bottomButton” TWICE and DOES NOT click the “topButton”. What will be displayed in the console?

• cow pig chicken
• chicken cow cow

• chicken pig pig

• chicken pig cow
• bow chicka wow wow

The following program is run. Then the user clicks the “bottomButton” TWO TIMES. What will be displayed in the console?

• apple banana cherry cherry dragon fruit
• banana dragon fruit cherry cherry
• banana dragon fruit apple apple
• banana cherry cherry dragon fruit
• chicken chicken chicken chicken chicken chicken chicken chicken chicken

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

• Line 1
• Line 2
• Line 3
• Line 4
• chicken chicken chicken chicken chicken chicken chicken chicken chicken

Which of the following BEST describes the differences between sequential and event-driven programming? A) In sequential, commands run one at a time. In event-driven, all commands run at the same time. B) In sequential, commands run in the order they are written. In event-driven, some commands run in response to user interactions or other events. C) In sequential, each command is run many times in sequence. In event-driven, all commands are run a single time as an event. D) In sequential, commands run faster than in event-driven programming.

• A
• B
• C
• D

Which of the following is NOT a reason to include comments in programs?

• Comments help the computer decide whether certain components of a program are important.
• Comments help programmers debug issues in their own code
• Comments help document how code was written for other programmers to use
• Comments enable programmers to track their work throughout the development process