App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 736 · 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 5 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
2. 2.💾 What number does this code show?
   let notes = ["Sports", "Music"];
   notes.push("Maths");
   show(notes.length);
3. 3.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 15 px
   Body text: 19 px
   Menu: 12 px
   Caption: 20 px
   Footer: 24 px
5. 5.Which of these is about UI (the look)? (a) how users feel after (b) how easy sign-up is (c) how fast a task is done (d) the icon shapes
6. 6.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Next button: 52 px tall
   Back button: 44 px tall
   Save button: 52 px tall (a) Save (b) Next (c) Back
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Map”
   2. tap Back
   3. tap the Settings tab
   4. tap the Chat tab
   5. tap the Chat tab
   Which screen are you on now? (a) Map (b) Chat (c) Settings (d) Feed
8. 8.True or false: a wireframe looks like the real app. (a) True (b) False
9. 9.🔢 In a food-order flow, which comes FIRST? (a) pay for the order (b) check the cart (c) add it to the cart (d) open the menu
10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 56 px tall
    Help button: 48 px tall
    Done button: 52 px tall
    Save button: 36 px tall
11. 11.True or false: a wireframe uses plain grey boxes. (a) False (b) True
12. 12.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Video”
    3. open “Friend list”
    How many times must you tap Back to reach the main screen of this tab?
13. 13.🔍 Which is the odd one out? (a) fast-flashing lights (b) colour as the only clue (c) labels on every icon (d) sudden loud sounds
14. 14.True or false: a wireframe uses the final pictures. (a) False (b) True
15. 15.🔀 Why plan the user flow before building? (a) to add more taps (b) to hide the buttons (c) to skip testing (d) so each step is clear
16. 16.Which of these helps everyone use the app? (a) big touch targets (b) sudden loud sounds (c) fast-flashing lights (d) tiny tap areas
17. 17.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Size → Address
    Design B: Home → Pens → Size → Menu → Offers → Pay → Cart (a) Design A (b) Design B
18. 18.Which of these is true of a wireframe? (a) looks like the real app (b) has the real colours (c) has no real colours (d) uses the final pictures
19. 19.Which of these is true of the back button? (a) hides extra links (b) switches main sections (c) goes to the last screen (d) sits at the bottom
20. 20.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Results → Menu → Offers → Address
    Design B: Home → Menu → Search → Shop → Address (a) Design A (b) Design B
21. 21.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 24 px tall
    Done button: 60 px tall
    Back button: 48 px tall
    Help button: 48 px tall (a) Help (b) Done (c) Start (d) Back
22. 22.🖼️ How many parts (boxes) does this wireframe have?
    [ menu icon ]
    [ top bar ]
    [ big picture ]
    [ list of items ]
    [ Add button ]
    [ Save button ]
23. 23.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
24. 24.Which of these is true of a final design? (a) is a quick sketch (b) has no real colours (c) uses plain grey boxes (d) shows the real fonts
25. 25.Which of these is about UX (the experience)? (a) the font size (b) the theme colours (c) how many taps it takes (d) the icon shapes
26. 26.🖼️ In this wireframe (top to bottom), what is right below the big picture?
    [ title text ]
    [ search box ]
    [ big picture ]
    [ top bar ]
    [ Save button ]
    [ list of items ] (a) search box (b) Save button (c) top bar (d) title text
27. 27.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Size → Address → Search → Shop
    Design B: Home → Results → Item
28. 28.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. tap the Lessons tab
    3. open “Help page”
    4. tap the Quiz tab
    5. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
29. 29.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 52 px tall
    Save button: 48 px tall
    Help button: 44 px tall (a) Next (b) Help (c) Save
30. 30.🔍 Which is the odd one out? (a) the theme colours (b) the button colours (c) how fast a task is done (d) the font size
31. 31.True or false: a clear word like Save is poor button design. (a) True (b) False
32. 32.True or false: a tiny 20 px button is good button design. (a) True (b) False
33. 33.🔢 In a quiz-app flow, which comes first: “see the final score” or “read a question”? (a) read a question (b) see the final score
34. 34.💾 What is a variable? (a) a phone setting (b) a picture (c) a type of screen (d) a named box for a value
35. 35.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a dead end (c) a clear next step (d) the same screen
36. 36.🔘 Our rule: buttons are at least 48 px tall. The Help button is 24 px tall. How many px taller must it be?
37. 37.Which of these is true of a final design? (a) has no real colours (b) uses the final pictures (c) shows where things go (d) is a quick sketch
38. 38.🖼️ How many parts (boxes) does this wireframe have?
    [ Save button ]
    [ menu icon ]
    [ filter buttons ]
    [ list of items ]
    [ search box ]
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 17 px
    Footer: 19 px
    Title: 13 px
40. 40.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?

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