App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 420 · 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.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 17 px
   Label: 14 px
   Body text: 11 px
2. 2.💾 What number does this code show?
   let songs = ["Sunrise", "Kites"];
   songs.push("Rain");
   show(songs.length);
3. 3.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Back button: 28 px tall
   Help button: 48 px tall
   Next button: 64 px tall
   Save button: 68 px tall (a) Help (b) Back (c) Save (d) Next
4. 4.True or false: a wireframe shows where things go. (a) True (b) False
5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Video”
   2. tap Back
   3. open “Friend list”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.Which of these fits saving in the cloud? (a) a class leaderboard (b) the sound on/off setting (c) a draft you are typing (d) your last game level
7. 7.🖼️ In this wireframe (top to bottom), what is right below the search box?
   [ search box ]
   [ filter buttons ]
   [ list of items ]
   [ title text ]
   [ top bar ] (a) title text (b) list of items (c) filter buttons (d) top bar
8. 8.🧭 Which part of navigation goes to the last screen? (a) the back button (b) a tab bar (c) a menu button
9. 9.True or false: a wireframe looks like the real app. (a) True (b) False
10. 10.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a wireframe (b) a final design
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 17 px
    Label: 25 px
    Footer: 14 px
    Title: 21 px
    Body text: 18 px (a) Title (b) Footer (c) Label (d) Menu
12. 12.💾 What number does this code show?
    let songs = ["Sunrise", "Ocean"];
    songs.push("Monsoon");
    songs.push("Kites");
    show(songs.length);
13. 13.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. tap the Quiz tab
    3. tap the Quiz tab
    How many times must you tap Back to reach the main screen of this tab?
14. 14.Which of these is about UX (the experience)? (a) the button colours (b) the icon shapes (c) how fast a task is done (d) the theme colours
15. 15.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) a shared to-do list (d) the sound on/off setting
16. 16.True or false: how users feel after is about UI (the look). (a) True (b) False
17. 17.Which colour pair is easy to read? (a) dark blue on black (b) pale pink on white (c) white on black (d) red on green
18. 18.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a long animation (c) a sound (d) a text label
19. 19.♿ Why add captions to videos? (a) to hide the sound (b) so anyone can follow (c) to slow them down (d) to add colour
20. 20.🧭 Where is a tab bar usually placed in a phone app? (a) at the bottom (b) nowhere (c) in the middle (d) inside a button
21. 21.🔍 Which is the odd one out? (a) labels on every icon (b) text that can grow (c) captions on videos (d) tiny tap areas
22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 28 px tall
    Done button: 56 px tall
    Next button: 60 px tall (a) Cancel (b) Next (c) Done
23. 23.🔍 Which is the odd one out? (a) how easy sign-up is (b) the icon shapes (c) the theme colours (d) the screen layout
24. 24.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a wireframe (b) a final design
25. 25.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
26. 26.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap Back
    3. tap the Search tab
    4. open “Friend list”
    5. tap the Home tab
    Which screen are you on now? (a) Home (b) Video (c) Search (d) Friend list
27. 27.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Menu → Results
    Design B: Home → Size → Pens → Shop → Confirm (a) Design B (b) Design A
28. 28.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) in the cloud (b) on the phone
29. 29.Which of these is true of the back button? (a) opens a list of pages (b) shows 3 to 5 icons (c) goes to the last screen (d) sits at the bottom
30. 30.🖼️ In this wireframe (top to bottom), what is right below the big picture?
    [ tab bar ]
    [ top bar ]
    [ big picture ]
    [ Save button ] (a) Save button (b) tab bar (c) top bar
31. 31.True or false: how many taps it takes is about UX (the experience). (a) True (b) False
32. 32.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
33. 33.True or false: a final design is a quick sketch. (a) True (b) False
34. 34.💾 Data saved only on the phone is lost when ___. (a) you send a message (b) the phone is lost (c) the app is closed (d) the screen turns off
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Menu → Shop
    Design B: Home → Results → Confirm → Offers → Pay
36. 36.True or false: the theme colours is about UX (the experience). (a) False (b) True
37. 37.🔢 In a sign-up flow, which comes FIRST? (a) enter the code sent (b) open the app (c) type name and email (d) tap “Sign up”
38. 38.🖼️ In this wireframe (top to bottom), what is right above the search box?
    [ Save button ]
    [ tab bar ]
    [ list of items ]
    [ search box ]
    [ filter buttons ] (a) Save button (b) filter buttons (c) tab bar (d) list of items
39. 39.Which of these fits saving on the phone? (a) chat messages to friends (b) a class leaderboard (c) notes to read offline (d) photos on two devices
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 24 px tall
    Cancel button: 60 px tall
    Next button: 52 px tall (a) Cancel (b) Next (c) Help

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