App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 728 · 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.♿ Accessibility means an app works for ___. (a) everyone (b) only experts (c) nobody (d) only the coder
2. 2.🔢 In a food-order flow, what comes right after “pick a dish”? (a) track the order (b) add it to the cart (c) check the cart (d) pay for the order
3. 3.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) takes photos (d) reads the screen aloud
4. 4.True or false: “strong colour contrast” helps everyone use the app. (a) False (b) True
5. 5.💾 Which can hold many values in order? (a) a single number (b) a switch (c) a list (d) a button
6. 6.🔀 Why plan the user flow before building? (a) to skip testing (b) so each step is clear (c) to hide the buttons (d) to add more taps
7. 7.🔍 Which is the odd one out? (a) strong colour contrast (b) colour as the only clue (c) labels on every icon (d) big touch targets
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 23 px
   Label: 16 px
   Hint: 14 px (a) Footer (b) Label (c) Hint
9. 9.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Map”
   2. tap the Home tab
   3. open “Friend list”
   4. tap the Search tab
   Which screen are you on now? (a) Friend list (b) Search (c) Home (d) Map
10. 10.True or false: a shared to-do list fits saving on the phone. (a) True (b) False
11. 11.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. open “Badges”
    3. open “Friend list”
    4. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
12. 12.💾 What number does this code show?
    let score = 6;
    score = score - 1;
    score = score + 4;
    show(score);
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Search → Pens → Cart → Menu
    Design B: Home → Pens → Shop → Pay
14. 14.🔍 Which is the odd one out? (a) the button colours (b) the theme colours (c) the screen layout (d) how many taps it takes
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. open “Edit photo”
    3. tap the Home tab
    4. open “Badges”
    5. tap the Search tab
    Which screen are you on now? (a) Badges (b) Search (c) Home (d) Edit photo
16. 16.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 44 px tall
    Start button: 64 px tall
    Done button: 56 px tall
    Cancel button: 36 px tall
17. 17.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 17 px
    Title: 23 px
    Body text: 19 px
    Caption: 12 px
    Label: 22 px
19. 19.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
20. 20.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Pay → Cart
    Design B: Home → Menu → Pens → Confirm
21. 21.🎨 Is this about UI or UX: how users feel after? (a) UI (b) UX
22. 22.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) in the cloud (b) on the phone
23. 23.🔢 In a sign-up flow, what comes right after “open the app”? (a) see the home screen (b) enter the code sent (c) make a password (d) tap “Sign up”
24. 24.🎨 Fewer taps to finish a task usually means ___. (a) worse UX (b) more colours (c) a bigger app (d) better UX
25. 25.Which of these is true of a menu button? (a) undoes one move (b) sits at the bottom (c) goes to the last screen (d) opens a list of pages
26. 26.✏️ What is a wireframe? (a) a type of password (b) a charging cable (c) a simple screen sketch (d) the finished app
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 14 px
    Body text: 25 px
    Title: 16 px
    Caption: 16 px (a) Title (b) Label (c) Body text (d) Caption
28. 28.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
29. 29.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. tap the Search tab
    3. open “Help page”
    4. open “Map”
    5. tap the Search tab
    Which screen are you on now? (a) Help page (b) Map (c) Search (d) Home
30. 30.🔢 In a quiz-app flow, which comes first: “see the final score” or “tap “Start quiz””? (a) see the final score (b) tap “Start quiz”
31. 31.🔍 Which is the odd one out? (a) fast-flashing lights (b) big touch targets (c) text that can grow (d) captions on videos
32. 32.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
33. 33.Which of these fits saving in the cloud? (a) your last game level (b) notes to read offline (c) a draft you are typing (d) chat messages to friends
34. 34.🧭 Why should every screen show where you are? (a) to look busy (b) to use more battery (c) so users do not get lost (d) to hide the menu
35. 35.🔍 Which is the odd one out? (a) the screen layout (b) the button colours (c) how easy sign-up is (d) the font size
36. 36.🧭 Tapping a tab usually takes you to ___. (a) the last app used (b) the phone settings (c) that tab’s main screen (d) a random page
37. 37.💾 pop() takes off the last item. What does this code show?
    let songs = ["Stars", "Kites", "Ocean"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Stars (b) Kites (c) Ocean
38. 38.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. open “Video”
    3. tap the Me tab
    4. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
39. 39.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
40. 40.Which of these is true of a final design? (a) has no real colours (b) shows where things go (c) looks like the real app (d) is a quick sketch

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