code.org Unit 3 Intro to App Design

In which of the following stages of the development process is a team MOST likely to interview a potential user of an app?

• investigating and reflecting

• designing

• prototyping

• testing

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 "topButton" be when the program is finished running?

• red

• orange

• blue

• green

If the user does NOT click the button what color will "topButton" be when this program finishes running?

• red

• blue

• green

• orange

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

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

• aaa bbb ccc

• aaa ccc bbb

• bbb aaa ccc

• ccc bbb aaa

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

• aaa bbb ccc ddd

• bbb ddd ccc ccc

• bbb ddd aaa aaa

• bbb ccc ccc ddd

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.

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