App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 625 · 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.♿ A screen has 7 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
2. 2.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
3. 3.🧭 Which part of navigation undoes one move? (a) a tab bar (b) the back button (c) a menu button
4. 4.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Lessons tab
   2. open “Help page”
   3. tap Back
   4. tap the Me tab
   Which screen are you on now? (a) Lessons (b) Quiz (c) Help page (d) Me
5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Map”
   2. tap Back
   3. open “Friend list”
   Which screen are you on now? (a) Map (b) Friend list (c) Chat (d) Feed
6. 6.🔀 What is a user flow? (a) a charging cable (b) a type of font (c) a colour theme (d) the path through screens
7. 7.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Start button: 44 px tall
   Next button: 64 px tall
   Cancel button: 52 px tall
   Done button: 48 px tall (a) Next (b) Done (c) Start (d) Cancel
8. 8.💾 What number does this code show?
   let lives = 3;
   lives = lives - 3;
   lives = lives + 5;
   show(lives);
9. 9.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
10. 10.🔢 In a quiz-app flow, which comes LAST? (a) see if it is right (b) see the final score (c) pick an answer (d) tap “Start quiz”
11. 11.🖼️ In this wireframe (top to bottom), what is right above the top bar?
    [ big picture ]
    [ top bar ]
    [ search box ]
    [ filter buttons ]
    [ menu icon ]
    [ tab bar ] (a) menu icon (b) big picture (c) filter buttons (d) tab bar
12. 12.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) reads the screen aloud (d) takes photos
13. 13.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Shop
    Design B: Home → Shop → Pens → Search → Size → Confirm (a) Design B (b) Design A
14. 14.True or false: the icon shapes is about UI (the look). (a) False (b) True
15. 15.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
16. 16.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
17. 17.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) in the cloud (b) on the phone
18. 18.🔢 In a sign-up flow, which comes first: “make a password” or “tap “Sign up””? (a) make a password (b) tap “Sign up”
19. 19.💾 pop() takes off the last item. What does this code show?
    let notes = ["Art", "Science", "Music", "Hindi", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Hindi (c) Science (d) Art
20. 20.🔢 In a sign-up flow, what comes right after “type name and email”? (a) open the app (b) enter the code sent (c) make a password (d) tap “Sign up”
21. 21.🔢 In a sign-up flow, which comes first: “see the home screen” or “open the app”? (a) open the app (b) see the home screen
22. 22.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ top bar ]
    [ search box ]
    [ Save button ]
    [ tab bar ] (a) top bar (b) Save button (c) search box (d) tab bar
23. 23.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ title text ]
    [ top bar ]
    [ list of items ]
    [ big picture ]
    [ search box ]
    [ tab bar ] (a) big picture (b) search box (c) title text (d) top bar
24. 24.🎨 Fewer taps to finish a task usually means ___. (a) worse UX (b) more colours (c) better UX (d) a bigger app
25. 25.🎨 UX stands for user ___. (a) experience (b) express (c) example (d) extra
26. 26.Which of these is true of a final design? (a) has no real colours (b) is a quick sketch (c) has the real colours (d) shows where things go
27. 27.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. tap the Chat tab
    3. open “Map”
    Which screen are you on now? (a) Map (b) Edit photo (c) Feed (d) Chat
28. 28.True or false: strong colour contrast is good button design. (a) True (b) False
29. 29.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
30. 30.🔘 Our rule: buttons are at least 48 px tall. The Help button is 24 px tall. How many px taller must it be?
31. 31.🖼️ In this wireframe (top to bottom), what is right above the filter buttons?
    [ title text ]
    [ Save button ]
    [ search box ]
    [ filter buttons ] (a) Save button (b) search box (c) title text
32. 32.Which of these is about UX (the experience)? (a) whether users get lost (b) the theme colours (c) the screen layout (d) the button colours
33. 33.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 48 px tall
    Help button: 52 px tall
    Start button: 32 px tall
    Save button: 40 px tall
34. 34.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
35. 35.🔢 In a food-order flow, what comes right after “check the cart”? (a) track the order (b) open the menu (c) pay for the order (d) pick a dish
36. 36.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. tap Back
    3. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Back button is 24 px tall. How many px taller must it be?
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 20 px
    Caption: 10 px
    Footer: 21 px
    Title: 21 px
    Menu: 17 px (a) Body text (b) Caption (c) Footer (d) Title
39. 39.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Feed tab
    2. tap the Feed tab
    3. open “Score card”
    Which screen are you on now? (a) Settings (b) Score card (c) Chat (d) Feed
40. 40.🔍 Which is the odd one out? (a) the button colours (b) the font size (c) the icon shapes (d) how many taps it takes

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