App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 453 · 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.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. tap the Feed tab
   3. open “Video”
   How many times must you tap Back to reach the main screen of this tab?
2. 2.🔢 In a food-order flow, which comes first: “add it to the cart” or “track the order”? (a) add it to the cart (b) track the order
3. 3.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
4. 4.💾 What number does this code show?
   let coins = 5;
   coins = coins - 3;
   coins = coins + 2;
   show(coins);
5. 5.💾 Which works with no internet at all? (a) a cloud leaderboard (b) a cloud backup (c) data saved on the phone (d) a shared chat
6. 6.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 24 px tall. How many px taller must it be?
7. 7.True or false: a big, easy tap area is poor button design. (a) True (b) False
8. 8.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
9. 9.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
10. 10.Which of these makes the app harder to use? (a) strong colour contrast (b) colour as the only clue (c) captions on videos (d) labels on every icon
11. 11.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) an error (c) a picture goes here (d) a closed app
12. 12.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) that tab’s main screen (c) the last app used (d) a random page
13. 13.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap the Profile tab
    3. open “Friend list”
    How many times must you tap Back to reach the main screen of this tab?
14. 14.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. open “Friend list”
    3. tap the Home tab
    4. open “Edit photo”
    5. tap the Search tab
    Which screen are you on now? (a) Friend list (b) Edit photo (c) Badges (d) Search
15. 15.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
16. 16.Which of these is true of a wireframe? (a) has the real colours (b) uses the final pictures (c) uses plain grey boxes (d) looks like the real app
17. 17.True or false: grey text on grey is poor button design. (a) False (b) True
18. 18.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
19. 19.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Friend list”
    3. open “Match report”
    4. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
20. 20.Which of these is true of a menu button? (a) shows 3 to 5 icons (b) sits at the bottom (c) switches main sections (d) hides extra links
21. 21.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
22. 22.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) the back button (c) a tab bar
23. 23.🌗 Is dark blue on black easy or hard to read on a button? (a) easy to read (b) hard to read
24. 24.✏️ Why draw a wireframe before coding? (a) it saves data (b) it adds colours (c) it runs the app (d) changes are quick
25. 25.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Match report”
    2. open “Badges”
    3. open “Badges”
    Which screen are you on now? (a) Feed (b) Badges (c) Chat (d) Match report
26. 26.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
27. 27.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Sports", "Science", "Music"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Maths (c) Science (d) Sports
28. 28.Which of these helps everyone use the app? (a) big touch targets (b) fast-flashing lights (c) colour as the only clue (d) tiny tap areas
29. 29.🎨 UX stands for user ___. (a) express (b) example (c) extra (d) experience
30. 30.Which of these is true of a wireframe? (a) looks like the real app (b) shows where things go (c) uses the final pictures (d) has the real colours
31. 31.🔢 In a food-order flow, which comes FIRST? (a) add it to the cart (b) open the menu (c) pay for the order (d) track the order
32. 32.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
33. 33.🖼️ How many parts (boxes) does this wireframe have?
    [ search box ]
    [ menu icon ]
    [ big picture ]
    [ filter buttons ]
34. 34.🔀 In a good flow, each screen should lead to ___. (a) a clear next step (b) a dead end (c) a random page (d) the same screen
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Pens
    Design B: Home → Shop → Offers → Menu
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Pens → Search
    Design B: Home → Shop → Confirm
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Send button is 20 px tall. How many px taller must it be?
38. 38.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Science", "Art", "Hindi", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Hindi (b) Science (c) Art (d) Maths
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 21 px
    Menu: 14 px
    Title: 14 px
40. 40.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap Back
    3. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?

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