App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 775 · 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.True or false: a tiny 20 px button is good button design. (a) False (b) True
2. 2.🖼️ How many parts (boxes) does this wireframe have?
   [ Save button ]
   [ big picture ]
   [ list of items ]
   [ title text ]
3. 3.🖼️ How many parts (boxes) does this wireframe have?
   [ big picture ]
   [ list of items ]
   [ Add button ]
   [ filter buttons ]
   [ tab bar ]
   [ title text ]
4. 4.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Help page”
   2. tap the Lessons tab
   3. open “Edit photo”
   4. tap the Lessons tab
   5. tap the Lessons tab
   Which screen are you on now? (a) Help page (b) Quiz (c) Edit photo (d) Lessons
5. 5.True or false: strong colour contrast is good button design. (a) True (b) False
6. 6.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
7. 7.🎨 Is this about UI or UX: whether users get lost? (a) UX (b) UI
8. 8.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) open the menu (b) pay for the order (c) track the order (d) check the cart
9. 9.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) the last app used (c) that tab’s main screen (d) a random page
10. 10.True or false: a big, easy tap area is poor button design. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) the button colours (b) how users feel after (c) how easy sign-up is (d) how fast a task is done
12. 12.🔘 Our rule: buttons are at least 48 px tall. The Start button is 28 px tall. How many px taller must it be?
13. 13.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) the icon shapes (b) the button colours (c) how fast a task is done (d) the screen layout
15. 15.♿ A screen has 11 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Cart → Item → Pens → Confirm
    Design B: Home → Confirm → Offers → Item → Pay → Address
17. 17.True or false: chat messages to friends fits saving on the phone. (a) True (b) False
18. 18.Which of these fits saving in the cloud? (a) a draft you are typing (b) notes to read offline (c) your last game level (d) a class leaderboard
19. 19.🎨 Is this about UI or UX: how users feel after? (a) UX (b) UI
20. 20.Which of these fits saving in the cloud? (a) a draft you are typing (b) chat messages to friends (c) the sound on/off setting (d) your last game level
21. 21.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
22. 22.🔢 In a quiz-app flow, which comes first: “tap “Start quiz”” or “see if it is right”? (a) tap “Start quiz” (b) see if it is right
23. 23.🧭 Which part of navigation goes to the last screen? (a) a menu button (b) the back button (c) a tab bar
24. 24.True or false: the font size is about UI (the look). (a) True (b) False
25. 25.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 56 px tall
    Send button: 28 px tall
    Save button: 48 px tall (a) Save (b) Send (c) Next
26. 26.True or false: a final design uses plain grey boxes. (a) True (b) False
27. 27.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Shop → Address
    Design B: Home → Pens → Cart → Pay → Size → Address
28. 28.♿ A screen has 11 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 40 px tall
    Help button: 40 px tall
    Cancel button: 44 px tall
30. 30.🔢 In a photo-post flow, what comes right after “write a caption”? (a) post the photo (b) take the photo (c) add a filter (d) open the camera screen
31. 31.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) fast typists (d) colour-blind users
32. 32.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
33. 33.💾 What number does this code show?
    let songs = ["Stars", "Monsoon", "Sunrise"];
    songs.push("Ocean");
    show(songs.length);
34. 34.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Cart → Size → Item
    Design B: Home → Pens → Cart → Confirm (a) Design A (b) Design B
35. 35.🎨 UX stands for user ___. (a) example (b) extra (c) experience (d) express
36. 36.True or false: a draft you are typing fits saving on the phone. (a) False (b) True
37. 37.🎨 Is this about UI or UX: the icon shapes? (a) UX (b) UI
38. 38.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
39. 39.True or false: a big, easy tap area is good button design. (a) True (b) False
40. 40.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. tap the Lessons tab
    3. open “Badges”
    4. tap the Quiz tab
    5. open “Video”
    Which screen are you on now? (a) Edit photo (b) Badges (c) Video (d) Lessons

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