App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 799 · 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?
   Back button: 44 px tall
   Done button: 72 px tall
   Cancel button: 68 px tall
   Start button: 68 px tall (a) Start (b) Cancel (c) Back (d) Done
2. 2.🖼️ In this wireframe (top to bottom), what is right below the top bar?
   [ list of items ]
   [ Add button ]
   [ top bar ]
   [ tab bar ] (a) list of items (b) Add button (c) tab bar
3. 3.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Pens → Address → Shop → Pay → Confirm → Item
   Design B: Home → Menu → Cart (a) Design A (b) Design B
4. 4.True or false: a big, easy tap area is good button design. (a) False (b) True
5. 5.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
6. 6.🧭 Which part of navigation switches main sections? (a) a menu button (b) the back button (c) a tab bar
7. 7.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) captions on videos (d) icons with no labels
8. 8.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Badges”
   2. tap Back
   3. open “Help page”
   4. open “Video”
   5. tap the Feed tab
   Which screen are you on now? (a) Help page (b) Feed (c) Video (d) Badges
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 18 px
   Footer: 9 px
   Hint: 23 px (a) Hint (b) Title (c) Footer
10. 10.True or false: a tiny 20 px button is poor button design. (a) False (b) True
11. 11.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Pay → Shop → Menu
    Design B: Home → Pens → Results → Pay → Shop → Confirm
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 52 px tall
    Cancel button: 52 px tall
    Done button: 36 px tall
    Save button: 56 px tall (a) Send (b) Done (c) Cancel (d) Save
13. 13.🔢 In a sign-up flow, what comes right after “make a password”? (a) see the home screen (b) tap “Sign up” (c) enter the code sent (d) open the app
14. 14.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Confirm → Offers → Menu
    Design B: Home → Menu → Pens
16. 16.Which of these is true of a final design? (a) shows the real fonts (b) shows where things go (c) is a quick sketch (d) has no real colours
17. 17.💾 What number does this code show?
    let lives = 9;
    lives = lives - 3;
    lives = lives + 2;
    show(lives);
18. 18.🖼️ How many parts (boxes) does this wireframe have?
    [ tab bar ]
    [ top bar ]
    [ filter buttons ]
    [ Save button ]
19. 19.💾 What is a variable? (a) a phone setting (b) a picture (c) a type of screen (d) a named box for a value
20. 20.Which of these is true of a tab bar? (a) goes to the last screen (b) switches main sections (c) opens a list of pages (d) hides extra links
21. 21.🔀 A screen with no way forward or back is called a ___. (a) shortcut (b) tab bar (c) dead end (d) home screen
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 21 px
    Caption: 10 px
    Label: 19 px
23. 23.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Video”
    3. tap Back
    4. open “Badges”
    5. tap Back
    Which screen are you on now? (a) Search (b) Home (c) Badges (d) Video
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 24 px
    Body text: 25 px
    Menu: 23 px
    Caption: 10 px (a) Menu (b) Body text (c) Footer (d) Caption
25. 25.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) the font size (d) how users feel after
26. 26.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
27. 27.💾 pop() takes off the last item. What does this code show?
    let songs = ["Kites", "Sunrise", "Rain", "Ocean", "Stars"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Rain (b) Sunrise (c) Ocean (d) Kites
28. 28.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) on the phone (b) in the cloud
29. 29.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
30. 30.🖼️ How many parts (boxes) does this wireframe have?
    [ filter buttons ]
    [ menu icon ]
    [ search box ]
    [ tab bar ]
31. 31.🔢 In a food-order flow, which comes first: “open the menu” or “pick a dish”? (a) open the menu (b) pick a dish
32. 32.🔀 What is a user flow? (a) a type of font (b) a charging cable (c) the path through screens (d) a colour theme
33. 33.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Menu → Confirm → Item
    Design B: Home → Pens → Menu
34. 34.🖼️ How many parts (boxes) does this wireframe have?
    [ title text ]
    [ Save button ]
    [ top bar ]
    [ filter buttons ]
    [ search box ]
35. 35.Which of these is true of a wireframe? (a) has the real colours (b) uses plain grey boxes (c) shows the real fonts (d) looks like the real app
36. 36.🖼️ In this wireframe (top to bottom), what is right below the Save button?
    [ Save button ]
    [ filter buttons ]
    [ tab bar ]
    [ Add button ]
    [ title text ]
    [ big picture ] (a) tab bar (b) big picture (c) title text (d) filter buttons
37. 37.💾 What number does this code show?
    let notes = ["Music", "Maths", "Sports"];
    notes.push("Science");
    notes.push("Art");
    show(notes.length);
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 17 px
    Caption: 10 px
    Menu: 16 px (a) Label (b) Caption (c) Menu
39. 39.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a final design (b) a wireframe
40. 40.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read

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