App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 839 · 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: the screen layout is about UX (the experience). (a) True (b) False
2. 2.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. tap the Home tab
   3. tap the Profile tab
   Which screen are you on now? (a) Search (b) Home (c) Profile
3. 3.True or false: a wireframe shows the real fonts. (a) False (b) True
4. 4.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) in the cloud (b) on the phone
5. 5.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
6. 6.Which of these is about UI (the look)? (a) how easy sign-up is (b) whether users get lost (c) the button colours (d) how fast a task is done
7. 7.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Help button: 56 px tall
   Back button: 36 px tall
   Cancel button: 64 px tall
8. 8.✏️ A box with a cross in a wireframe usually means ___. (a) a closed app (b) an error (c) delete this (d) a picture goes here
9. 9.🔢 In a food-order flow, which comes LAST? (a) pay for the order (b) add it to the cart (c) track the order (d) pick a dish
10. 10.True or false: space between buttons is poor button design. (a) True (b) False
11. 11.💾 What does this code show? (Positions start at 0.)
    let notes = ["Science", "Maths", "Sports", "Music", "Art"];
    show(notes[0]); (a) Maths (b) Music (c) Sports (d) Science
12. 12.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
13. 13.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a dead end (c) a clear next step (d) a random page
14. 14.💾 pop() takes off the last item. What does this code show?
    let songs = ["Monsoon", "Rain", "Stars"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Monsoon (b) Stars (c) Rain
15. 15.🔢 In a photo-post flow, which comes first: “take the photo” or “post the photo”? (a) post the photo (b) take the photo
16. 16.♿ Why add captions to videos? (a) so anyone can follow (b) to add colour (c) to hide the sound (d) to slow them down
17. 17.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
18. 18.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
19. 19.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Pens → Pay → Address → Search → Item
    Design B: Home → Results → Offers → Pay → Menu → Address → Shop
20. 20.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 48 px tall
    Start button: 28 px tall
    Done button: 56 px tall (a) Start (b) Back (c) Done
21. 21.💾 Where should the app save your last game level: on the phone or in the cloud? (a) in the cloud (b) on the phone
22. 22.True or false: your last game level fits saving in the cloud. (a) False (b) True
23. 23.♿ A screen has 9 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
24. 24.Which of these is true of a final design? (a) is a quick sketch (b) uses plain grey boxes (c) has no real colours (d) looks like the real app
25. 25.💾 In most code, the first item of a list is at position ___. (a) 10 (b) 2 (c) 0 (d) 1
26. 26.True or false: the sound on/off setting fits saving in the cloud. (a) False (b) True
27. 27.True or false: a final design shows the real fonts. (a) True (b) False
28. 28.True or false: a final design has no real colours. (a) True (b) False
29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 48 px tall
    Cancel button: 60 px tall
    Help button: 52 px tall
30. 30.🔢 In a sign-up flow, which comes first: “see the home screen” or “type name and email”? (a) see the home screen (b) type name and email
31. 31.Which of these is about UI (the look)? (a) how users feel after (b) how fast a task is done (c) whether users get lost (d) the theme colours
32. 32.🔢 In a sign-up flow, which comes first: “type name and email” or “tap “Sign up””? (a) tap “Sign up” (b) type name and email
33. 33.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
34. 34.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
35. 35.True or false: a wireframe uses the final pictures. (a) True (b) False
36. 36.🧭 Where is a tab bar usually placed in a phone app? (a) nowhere (b) in the middle (c) inside a button (d) at the bottom
37. 37.🔢 In a food-order flow, what comes right after “pick a dish”? (a) open the menu (b) add it to the cart (c) pay for the order (d) check the cart
38. 38.🎨 A beautiful app that confuses everyone has ___. (a) good UI but poor UX (b) perfect UX (c) good UX but poor UI (d) no UI at all
39. 39.Which of these is about UX (the experience)? (a) the font size (b) the theme colours (c) whether users get lost (d) the screen layout
40. 40.Which of these makes the app harder to use? (a) labels on every icon (b) tiny tap areas (c) strong colour contrast (d) captions on videos

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