App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 300 · 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 Home, Search, Profile. You start on Home, then:
   1. open “Edit photo”
   2. open “Video”
   3. tap Back
   4. open “Help page”
   How many times must you tap Back to reach the main screen of this tab?
2. 2.🔍 Which is the odd one out? (a) captions on videos (b) fast-flashing lights (c) text that can grow (d) labels on every icon
3. 3.🔢 In a sign-up flow, which comes first: “open the app” or “tap “Sign up””? (a) open the app (b) tap “Sign up”
4. 4.🔢 In a food-order flow, which comes first: “add it to the cart” or “pick a dish”? (a) add it to the cart (b) pick a dish
5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Edit photo”
   2. tap Back
   3. open “Score card”
   4. open “Badges”
   Which screen are you on now? (a) Edit photo (b) Badges (c) Lessons (d) Score card
6. 6.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ big picture ]
   [ search box ]
   [ filter buttons ]
   [ list of items ]
   [ Save button ]
   [ tab bar ] (a) filter buttons (b) tab bar (c) list of items (d) big picture
7. 7.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Friend list”
   2. tap the Profile tab
   3. open “Edit photo”
   4. open “Score card”
   How many times must you tap Back to reach the main screen of this tab?
9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Save button: 60 px tall
   Start button: 56 px tall
   Cancel button: 56 px tall
10. 10.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 48 px tall
    Next button: 40 px tall
    Send button: 68 px tall (a) Start (b) Send (c) Next
12. 12.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 20 px
    Body text: 14 px
    Title: 28 px (a) Body text (b) Caption (c) Title
13. 13.💾 What does this code show? (Positions start at 0.)
    let songs = ["Kites", "Stars", "Rain", "Monsoon", "Ocean"];
    show(songs[4]); (a) Rain (b) Kites (c) Stars (d) Ocean
14. 14.🖼️ In this wireframe (top to bottom), what is right below the Save button?
    [ top bar ]
    [ menu icon ]
    [ filter buttons ]
    [ Save button ]
    [ tab bar ] (a) menu icon (b) filter buttons (c) top bar (d) tab bar
15. 15.Which colour pair is hard to read? (a) white on black (b) white on dark green (c) pale pink on white (d) black on pale grey
16. 16.♿ A screen has 9 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
17. 17.✏️ What is a wireframe? (a) a simple screen sketch (b) a type of password (c) a charging cable (d) the finished app
18. 18.True or false: the screen layout is about UI (the look). (a) False (b) True
19. 19.🌗 Is light grey on white easy or hard to read on a button? (a) easy to read (b) hard to read
20. 20.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. tap the Me tab
    3. open “Video”
    4. tap Back
    Which screen are you on now? (a) Me (b) Video (c) Lessons (d) Badges
21. 21.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Save button ]
    [ menu icon ]
    [ list of items ]
    [ tab bar ] (a) list of items (b) menu icon (c) Save button (d) tab bar
22. 22.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a menu button (c) a tab bar
23. 23.🔢 In a food-order flow, which comes first: “pick a dish” or “pay for the order”? (a) pay for the order (b) pick a dish
24. 24.True or false: a wireframe has the real colours. (a) True (b) False
25. 25.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 24 px
    Menu: 21 px
    Label: 13 px
    Hint: 13 px
    Caption: 13 px
26. 26.🎨 A beautiful app that confuses everyone has ___. (a) perfect UX (b) no UI at all (c) good UX but poor UI (d) good UI but poor UX
27. 27.🔢 In a sign-up flow, which comes first: “tap “Sign up”” or “enter the code sent”? (a) tap “Sign up” (b) enter the code sent
28. 28.🎨 Is this about UI or UX: the screen layout? (a) UX (b) UI
29. 29.True or false: buttons almost touching is good button design. (a) True (b) False
30. 30.🖼️ How many parts (boxes) does this wireframe have?
    [ tab bar ]
    [ Save button ]
    [ menu icon ]
    [ big picture ]
31. 31.✏️ What is the easiest way to draw a first wireframe? (a) a phone case (b) a microphone (c) a 3D printer (d) pencil and paper
32. 32.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
33. 33.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
34. 34.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) colour as the only clue (d) text that can grow
35. 35.Which colour pair is hard to read? (a) light grey on white (b) white on dark green (c) black on yellow (d) black on pale grey
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Pens → Menu → Results → Offers → Size
    Design B: Home → Pay → Confirm → Cart → Size → Item
37. 37.True or false: a final design has no real colours. (a) True (b) False
38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 60 px tall
    Send button: 60 px tall
    Done button: 36 px tall
39. 39.🔍 Which is the odd one out? (a) how easy sign-up is (b) the icon shapes (c) the font size (d) the button colours
40. 40.🔍 Which is the odd one out? (a) how fast a task is done (b) the theme colours (c) the icon shapes (d) the button colours

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