App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 305 · 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.💾 What does this code show? (Positions start at 0.)
   let notes = ["Maths", "Music", "Sports", "Art"];
   show(notes[0]); (a) Maths (b) Sports (c) Art (d) Music
2. 2.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Friend list”
   2. tap Back
   3. open “Help page”
   4. tap the Profile tab
   5. open “Friend list”
   How many times must you tap Back to reach the main screen of this tab?
3. 3.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
4. 4.🖼️ How many parts (boxes) does this wireframe have?
   [ filter buttons ]
   [ title text ]
   [ top bar ]
   [ search box ]
   [ tab bar ]
   [ big picture ]
5. 5.💾 What number does this code show?
   let score = 5;
   score = score - 4;
   score = score + 5;
   show(score);
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 13 px
   Title: 24 px
   Menu: 28 px
   Footer: 21 px (a) Menu (b) Title (c) Body text (d) Footer
7. 7.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Match report”
   2. tap the Quiz tab
   3. open “Video”
   4. open “Help page”
   5. tap Back
   How many times must you tap Back to reach the main screen of this tab?
8. 8.Which of these fits saving in the cloud? (a) the sound on/off setting (b) chat messages to friends (c) notes to read offline (d) a draft you are typing
9. 9.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) take the photo (c) post the photo (d) add a filter
10. 10.🔢 In a quiz-app flow, which comes FIRST? (a) see if it is right (b) pick an answer (c) tap “Start quiz” (d) read a question
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 25 px
    Hint: 10 px
    Body text: 27 px (a) Hint (b) Label (c) Body text
12. 12.🔢 In a photo-post flow, which comes first: “write a caption” or “take the photo”? (a) take the photo (b) write a caption
13. 13.True or false: buttons almost touching is good button design. (a) True (b) False
14. 14.✏️ What is a wireframe? (a) a simple screen sketch (b) a charging cable (c) a type of password (d) the finished app
15. 15.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 40 px tall
    Cancel button: 48 px tall
    Save button: 48 px tall
16. 16.♿ A screen has 12 icon buttons. Only 11 of them have a text label for screen readers. How many still need a label?
17. 17.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Pay → Menu → Results
    Design B: Home → Item → Shop → Pay (a) Design A (b) Design B
18. 18.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 10 to 12 (c) 3 to 5 (d) 1
19. 19.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
20. 20.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
21. 21.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. tap the Feed tab
    3. open “Edit photo”
    4. open “Badges”
    5. tap the Chat tab
    How many times must you tap Back to reach the main screen of this tab?
22. 22.True or false: icons with no meaning is poor button design. (a) True (b) False
23. 23.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 48 px tall
    Save button: 32 px tall
    Cancel button: 64 px tall (a) Cancel (b) Done (c) Save
24. 24.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
25. 25.🧭 Why should every screen show where you are? (a) to use more battery (b) to hide the menu (c) so users do not get lost (d) to look busy
26. 26.✏️ Why draw a wireframe before coding? (a) it runs the app (b) it adds colours (c) changes are quick (d) it saves data
27. 27.Which colour pair is easy to read? (a) black on pale grey (b) pale pink on white (c) red on green (d) light grey on white
28. 28.🔢 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
29. 29.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
30. 30.Which of these makes the app harder to use? (a) big touch targets (b) captions on videos (c) labels on every icon (d) tiny tap areas
31. 31.Which of these is true of a final design? (a) shows the real fonts (b) is a quick sketch (c) has no real colours (d) uses plain grey boxes
32. 32.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
33. 33.🧭 Which part of navigation sits at the bottom? (a) a tab bar (b) the back button (c) a menu button
34. 34.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 32 px tall
    Save button: 48 px tall
    Next button: 48 px tall
    Cancel button: 60 px tall
35. 35.💾 What number does this code show?
    let friends = ["Arjun", "Riya"];
    friends.push("Zoya");
    friends.push("Aman");
    show(friends.length);
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 12 px
    Label: 17 px
    Menu: 13 px
    Caption: 23 px
37. 37.🎨 Fewer taps to finish a task usually means ___. (a) a bigger app (b) worse UX (c) more colours (d) better UX
38. 38.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 68 px tall
    Next button: 48 px tall
    Start button: 36 px tall
    Cancel button: 52 px tall (a) Cancel (b) Help (c) Start (d) Next
39. 39.♿ A screen has 11 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
40. 40.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Cart → Item → Menu → Pens → Search → Size
    Design B: Home → Pay → Shop → Address → Results → Size

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