App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 138 · 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: buttons are at least 48 px tall. Which button is too small?
   Done button: 72 px tall
   Cancel button: 44 px tall
   Back button: 68 px tall
   Start button: 68 px tall (a) Start (b) Cancel (c) Back (d) Done
2. 2.💾 What does this code show? (Positions start at 0.)
   let songs = ["Kites", "Ocean", "Sunrise", "Stars", "Rain"];
   show(songs[2]); (a) Stars (b) Kites (c) Sunrise (d) Ocean
3. 3.Which of these helps everyone use the app? (a) sudden loud sounds (b) strong colour contrast (c) fast-flashing lights (d) colour as the only clue
4. 4.👆 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 → Size → Shop → Address → Confirm → Pay → Menu
5. 5.🖼️ How many parts (boxes) does this wireframe have?
   [ search box ]
   [ tab bar ]
   [ Save button ]
   [ menu icon ]
   [ list of items ]
6. 6.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
7. 7.Which colour pair is easy to read? (a) dark blue on white (b) dark blue on black (c) red on green (d) light grey on white
8. 8.🔢 In a sign-up flow, which comes first: “enter the code sent” or “make a password”? (a) make a password (b) enter the code sent
9. 9.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
10. 10.🎨 UI stands for user ___. (a) idea (b) input (c) interface (d) internet
11. 11.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) home screen (c) dead end (d) shortcut
12. 12.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Video”
    3. tap the Profile tab
    4. open “Edit photo”
    Which screen are you on now? (a) Home (b) Video (c) Search (d) Edit photo
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 12 px
    Label: 12 px
    Footer: 20 px
    Caption: 17 px
    Hint: 16 px
14. 14.Which of these makes the app harder to use? (a) text that can grow (b) fast-flashing lights (c) big touch targets (d) labels on every icon
15. 15.🧭 Which part of navigation undoes one move? (a) the back button (b) a tab bar (c) a menu button
16. 16.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. open “Help page”
    3. tap Back
    4. tap the Home tab
    5. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
17. 17.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) track the order (b) check the cart (c) pick a dish (d) open the menu
18. 18.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Save button ]
    [ list of items ]
    [ menu icon ]
    [ big picture ] (a) big picture (b) list of items (c) Save button (d) menu icon
19. 19.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
20. 20.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
21. 21.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) open the menu (c) add it to the cart (d) track the order
22. 22.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
23. 23.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. tap Back
    3. open “Match report”
    4. open “Friend list”
    How many times must you tap Back to reach the main screen of this tab?
24. 24.🔢 In a sign-up flow, which comes FIRST? (a) open the app (b) tap “Sign up” (c) enter the code sent (d) see the home screen
25. 25.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
26. 26.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
27. 27.💾 In most code, the first item of a list is at position ___. (a) 2 (b) 1 (c) 0 (d) 10
28. 28.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 56 px tall
    Save button: 64 px tall
    Back button: 40 px tall (a) Start (b) Back (c) Save
29. 29.Which of these is true of a wireframe? (a) uses the final pictures (b) has the real colours (c) looks like the real app (d) uses plain grey boxes
30. 30.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Shop → Size → Offers → Cart
    Design B: Home → Cart → Menu
31. 31.True or false: a final design uses the final pictures. (a) False (b) True
32. 32.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Size → Offers → Results → Shop → Pens → Pay
    Design B: Home → Shop → Results
33. 33.Which of these is about UI (the look)? (a) how many taps it takes (b) the icon shapes (c) whether users get lost (d) how easy sign-up is
34. 34.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 32 px tall
    Done button: 68 px tall
    Start button: 60 px tall (a) Help (b) Start (c) Done
35. 35.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a final design (b) a wireframe
36. 36.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Item → Pens → Offers → Search → Confirm → Results
    Design B: Home → Shop → Item → Cart (a) Design B (b) Design A
37. 37.Which of these is true of a final design? (a) has no real colours (b) is a quick sketch (c) shows the real fonts (d) uses plain grey boxes
38. 38.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap Back
    3. tap the Home tab
    4. open “Help page”
    Which screen are you on now? (a) Help page (b) Match report (c) Home (d) Search
39. 39.🎨 Is this about UI or UX: the icon shapes? (a) UX (b) UI
40. 40.🧭 Which part of navigation hides extra links? (a) the back button (b) a tab bar (c) a menu button

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