App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 984 · 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.True or false: how fast a task is done is about UX (the experience). (a) False (b) True
2. 2.🧭 What does the back button usually do? (a) deletes the page (b) closes all apps (c) opens settings (d) goes to the last screen
3. 3.🔍 Which is the odd one out? (a) the theme colours (b) how users feel after (c) the font size (d) the icon shapes
4. 4.🔍 Which is the odd one out? (a) how users feel after (b) whether users get lost (c) how many taps it takes (d) the screen layout
5. 5.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Save button: 60 px tall
   Help button: 36 px tall
   Back button: 48 px tall
   Next button: 60 px tall (a) Next (b) Help (c) Save (d) Back
6. 6.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Lessons tab
   2. open “Help page”
   3. tap Back
   Which screen are you on now? (a) Help page (b) Quiz (c) Me (d) Lessons
7. 7.🔍 Which is the odd one out? (a) how fast a task is done (b) the font size (c) the icon shapes (d) the button colours
8. 8.💾 What does this code show? (Positions start at 0.)
   let songs = ["Kites", "Rain", "Monsoon", "Stars"];
   show(songs[0]); (a) Stars (b) Monsoon (c) Rain (d) Kites
9. 9.🧭 Which part of navigation hides extra links? (a) a menu button (b) the back button (c) a tab bar
10. 10.♿ A screen has 10 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
11. 11.True or false: space between buttons is poor button design. (a) True (b) False
12. 12.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) you send a message (c) the phone is lost (d) the app is closed
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Results → Pens → Shop → Address → Pay → Cart
    Design B: Home → Pens → Item
14. 14.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Item → Search → Offers → Confirm → Pens
    Design B: Home → Menu → Pens
15. 15.🔢 In a photo-post flow, which comes first: “open the camera screen” or “add a filter”? (a) add a filter (b) open the camera screen
16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Size → Pens → Menu → Cart
    Design B: Home → Menu → Results → Size
17. 17.🎨 Is this about UI or UX: the font size? (a) UI (b) UX
18. 18.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. tap the Settings tab
    3. open “Video”
    Which screen are you on now? (a) Chat (b) Settings (c) Video (d) Feed
19. 19.True or false: your last game level fits saving in the cloud. (a) False (b) True
20. 20.Which of these is true of a final design? (a) has no real colours (b) shows where things go (c) is a quick sketch (d) shows the real fonts
21. 21.🔢 In a quiz-app flow, which comes LAST? (a) read a question (b) see the final score (c) pick an answer (d) tap “Start quiz”
22. 22.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) home screen (c) dead end (d) shortcut
23. 23.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
24. 24.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 32 px tall. How many px taller must it be?
25. 25.🎨 Is this about UI or UX: how fast a task is done? (a) UX (b) UI
26. 26.Which of these fits saving on the phone? (a) your last game level (b) a class leaderboard (c) a shared to-do list (d) chat messages to friends
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 18 px
    Body text: 10 px
    Label: 23 px (a) Body text (b) Label (c) Menu
28. 28.💾 What number does this code show?
    let notes = ["Art", "Sports"];
    notes.push("Music");
    show(notes.length);
29. 29.Which of these helps everyone use the app? (a) strong colour contrast (b) icons with no labels (c) colour as the only clue (d) fast-flashing lights
30. 30.🔍 Which is the odd one out? (a) the button colours (b) the icon shapes (c) how easy sign-up is (d) the font size
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Shop
    Design B: Home → Search → Pens → Pay → Item → Offers
32. 32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Pens → Results
    Design B: Home → Offers → Cart → Results → Item → Search → Confirm (a) Design A (b) Design B
33. 33.True or false: a tiny 20 px button is good button design. (a) True (b) False
34. 34.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
35. 35.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
36. 36.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap the Home tab
    3. open “Score card”
    4. open “Badges”
    5. open “Map”
    Which screen are you on now? (a) Score card (b) Map (c) Match report (d) Badges
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 28 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?
    Footer: 22 px
    Hint: 24 px
    Title: 11 px
    Body text: 23 px (a) Title (b) Body text (c) Footer (d) Hint
39. 39.🔘 Our rule: buttons are at least 48 px tall. The Save button is 36 px tall. How many px taller must it be?
40. 40.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder

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