App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 838 · 40 questions

Developer's tip (Think like the user): First decide which topic the question is about. Use that lesson’s rule: 48 px buttons, 16 px text, the screen stack, the flow order. For code, count positions from 0.

1. 1.💾 Which can hold many values in order? (a) a button (b) a switch (c) a single number (d) a list
2. 2.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Send button: 60 px tall
   Save button: 28 px tall
   Next button: 64 px tall
   Back button: 72 px tall (a) Next (b) Save (c) Back (d) Send
3. 3.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Shop → Address → Item → Search → Menu
   Design B: Home → Confirm → Search → Item
4. 4.Which of these is about UX (the experience)? (a) how easy sign-up is (b) the button colours (c) the icon shapes (d) the theme colours
5. 5.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) text that can grow (d) icons with no labels
6. 6.Which colour pair is easy to read? (a) pale pink on white (b) black on pale grey (c) red on green (d) yellow on white
7. 7.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
8. 8.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Menu → Address → Pay → Confirm → Cart
   Design B: Home → Pens → Results → Search → Offers
9. 9.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Done button: 60 px tall
   Help button: 48 px tall
   Back button: 60 px tall
   Cancel button: 32 px tall (a) Cancel (b) Back (c) Done (d) Help
10. 10.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. tap Back
    3. open “Video”
    Which screen are you on now? (a) Chat (b) Feed (c) Help page (d) Video
11. 11.🧭 Which part of navigation opens a list of pages? (a) a menu button (b) a tab bar (c) the back button
12. 12.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. open “Video”
    3. tap Back
    4. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
13. 13.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
14. 14.Which of these is true of a wireframe? (a) looks like the real app (b) has the real colours (c) uses the final pictures (d) has no real colours
15. 15.True or false: the theme colours is about UX (the experience). (a) False (b) True
16. 16.🔢 In a quiz-app flow, which comes LAST? (a) see if it is right (b) pick an answer (c) tap “Start quiz” (d) see the final score
17. 17.True or false: how easy sign-up is is about UX (the experience). (a) False (b) True
18. 18.♿ A screen has 8 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
19. 19.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
20. 20.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
21. 21.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
22. 22.♿ A screen has 11 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
23. 23.Which of these is about UI (the look)? (a) how easy sign-up is (b) how fast a task is done (c) how many taps it takes (d) the screen layout
24. 24.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Title: 16 px
    Hint: 20 px
25. 25.🔢 In a sign-up flow, which comes first: “tap “Sign up”” or “type name and email”? (a) type name and email (b) tap “Sign up”
26. 26.True or false: icons with no meaning is poor button design. (a) False (b) True
27. 27.♿ A screen has 11 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
28. 28.💾 What number does this code show?
    let songs = ["Rain", "Ocean", "Monsoon", "Stars"];
    songs.push("Sunrise");
    songs.push("Kites");
    show(songs.length);
29. 29.🔢 In a quiz-app flow, which comes first: “see if it is right” or “see the final score”? (a) see if it is right (b) see the final score
30. 30.💾 What is a variable? (a) a picture (b) a named box for a value (c) a type of screen (d) a phone setting
31. 31.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 64 px tall
    Start button: 60 px tall
    Send button: 32 px tall
    Cancel button: 48 px tall
32. 32.True or false: space between buttons is good button design. (a) False (b) True
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 23 px
    Menu: 23 px
    Footer: 10 px (a) Title (b) Menu (c) Footer
34. 34.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. tap the Lessons tab
    3. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
35. 35.Which of these makes the app harder to use? (a) text that can grow (b) labels on every icon (c) captions on videos (d) colour as the only clue
36. 36.True or false: a big, easy tap area is poor button design. (a) True (b) False
37. 37.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap the Chat tab
    3. open “Map”
    4. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
38. 38.Which colour pair is hard to read? (a) black on yellow (b) red on green (c) black on pale grey (d) white on dark green
39. 39.🔢 In a photo-post flow, which comes first: “open the camera screen” or “take the photo”? (a) open the camera screen (b) take the photo
40. 40.Which of these makes the app harder to use? (a) text that can grow (b) sudden loud sounds (c) big touch targets (d) captions on videos

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students