App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 24 · 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 of these is about UI (the look)? (a) the icon shapes (b) how fast a task is done (c) whether users get lost (d) how many taps it takes
2. 2.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
3. 3.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
4. 4.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Map”
   2. open “Match report”
   3. tap Back
   4. tap Back
   5. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
5. 5.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 13 px
   Hint: 21 px
   Menu: 22 px
6. 6.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Feed tab
   2. tap the Chat tab
   3. open “Edit photo”
   Which screen are you on now? (a) Chat (b) Settings (c) Feed (d) Edit photo
7. 7.🧭 Where is a tab bar usually placed in a phone app? (a) in the middle (b) at the bottom (c) inside a button (d) nowhere
8. 8.🔢 In a sign-up flow, which comes first: “open the app” or “see the home screen”? (a) see the home screen (b) open the app
9. 9.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Lessons tab
   2. open “Badges”
   3. tap Back
   4. tap the Lessons tab
   Which screen are you on now? (a) Quiz (b) Me (c) Badges (d) Lessons
10. 10.🔀 What is a user flow? (a) the path through screens (b) a charging cable (c) a colour theme (d) a type of font
11. 11.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. open “Video”
    3. open “Match report”
    4. tap Back
    Which screen are you on now? (a) Search (b) Home (c) Video (d) Match report
12. 12.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) the same screen (c) a dead end (d) a clear next step
13. 13.🔢 In a quiz-app flow, which comes FIRST? (a) read a question (b) tap “Start quiz” (c) see if it is right (d) see the final score
14. 14.🔢 In a quiz-app flow, which comes first: “see the final score” or “tap “Start quiz””? (a) tap “Start quiz” (b) see the final score
15. 15.True or false: icons with no meaning is poor button design. (a) False (b) True
16. 16.True or false: a final design shows the real fonts. (a) False (b) True
17. 17.💾 What does this code show? (Positions start at 0.)
    let friends = ["Arjun", "Meera", "Aman", "Zoya", "Kabir"];
    show(friends[2]); (a) Meera (b) Arjun (c) Zoya (d) Aman
18. 18.True or false: a big, easy tap area is poor button design. (a) True (b) False
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 13 px
    Menu: 21 px
    Label: 12 px
    Footer: 11 px
    Body text: 15 px
20. 20.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Results → Pens → Item → Address → Shop
    Design B: Home → Address → Offers → Search (a) Design A (b) Design B
21. 21.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap the Settings tab
    3. open “Badges”
    4. tap Back
    5. tap the Chat tab
    How many times must you tap Back to reach the main screen of this tab?
22. 22.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
23. 23.True or false: how many taps it takes is about UI (the look). (a) False (b) True
24. 24.Which colour pair is hard to read? (a) yellow on white (b) dark blue on white (c) white on black (d) white on dark green
25. 25.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Match report”
    3. open “Friend list”
    4. tap the Search tab
    How many times must you tap Back to reach the main screen of this tab?
26. 26.Which of these helps everyone use the app? (a) icons with no labels (b) sudden loud sounds (c) labels on every icon (d) fast-flashing lights
27. 27.Which of these makes the app harder to use? (a) big touch targets (b) text that can grow (c) colour as the only clue (d) captions on videos
28. 28.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 32 px tall
    Back button: 64 px tall
    Help button: 40 px tall
29. 29.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
30. 30.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Size → Offers → Pay → Search → Item
    Design B: Home → Address → Menu → Results (a) Design A (b) Design B
31. 31.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 26 px
    Caption: 23 px
    Body text: 10 px (a) Footer (b) Caption (c) Body text
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 28 px
    Caption: 19 px
    Title: 14 px (a) Caption (b) Menu (c) Title
34. 34.True or false: a final design uses plain grey boxes. (a) True (b) False
35. 35.💾 What number does this code show?
    let friends = ["Zoya", "Kabir", "Meera", "Riya"];
    friends.push("Aman");
    show(friends.length);
36. 36.Which of these fits saving on the phone? (a) chat messages to friends (b) your last game level (c) a class leaderboard (d) photos on two devices
37. 37.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 32 px tall
    Back button: 64 px tall
    Cancel button: 44 px tall
    Save button: 40 px tall
38. 38.Which of these is about UX (the experience)? (a) the screen layout (b) the font size (c) the theme colours (d) how fast a task is done
39. 39.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap the Quiz tab
    3. tap the Lessons tab
    4. tap the Me tab
    5. tap the Lessons tab
    How many times must you tap Back to reach the main screen of this tab?
40. 40.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Friend list”
    3. tap Back
    4. open “Match report”
    5. tap the Search tab
    How many times must you tap Back to reach the main screen of this tab?

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