App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 640 · 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.🖼️ In this wireframe (top to bottom), what is right below the list of items?
   [ list of items ]
   [ tab bar ]
   [ search box ]
   [ big picture ]
   [ Add button ] (a) Add button (b) tab bar (c) big picture (d) search box
2. 2.Which of these is true of a tab bar? (a) hides extra links (b) sits at the bottom (c) goes to the last screen (d) undoes one move
3. 3.💾 What does this code show? (Positions start at 0.)
   let songs = ["Stars", "Rain", "Sunrise"];
   show(songs[0]); (a) Stars (b) Rain (c) Sunrise
4. 4.True or false: a final design uses the final pictures. (a) True (b) False
5. 5.True or false: grey text on grey is good button design. (a) True (b) False
6. 6.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
7. 7.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) take the photo (c) add a filter (d) post the photo
8. 8.Which of these fits saving on the phone? (a) a class leaderboard (b) photos on two devices (c) chat messages to friends (d) notes to read offline
9. 9.🔘 Our rule: buttons are at least 48 px tall. The Done button is 28 px tall. How many px taller must it be?
10. 10.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. tap Back
    3. open “Badges”
    4. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
11. 11.🔍 Which is the odd one out? (a) the theme colours (b) how many taps it takes (c) the button colours (d) the icon shapes
12. 12.True or false: how easy sign-up is is about UI (the look). (a) False (b) True
13. 13.True or false: a final design shows where things go. (a) False (b) True
14. 14.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Item
    Design B: Home → Confirm → Shop → Pay
16. 16.🔢 In a food-order flow, which comes first: “pick a dish” or “add it to the cart”? (a) pick a dish (b) add it to the cart
17. 17.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap the Search tab
    3. tap the Profile tab
    4. tap the Home tab
    5. open “Friend list”
    Which screen are you on now? (a) Friend list (b) Profile (c) Home (d) Search
18. 18.True or false: grey text on grey is poor button design. (a) True (b) False
19. 19.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 56 px tall
    Cancel button: 64 px tall
    Save button: 32 px tall (a) Cancel (b) Help (c) Save
20. 20.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
21. 21.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 48 px tall
    Cancel button: 44 px tall
    Send button: 60 px tall
    Back button: 72 px tall (a) Done (b) Send (c) Back (d) Cancel
22. 22.True or false: a wireframe has the real colours. (a) True (b) False
23. 23.🔢 In a sign-up flow, which comes first: “see the home screen” or “open the app”? (a) see the home screen (b) open the app
24. 24.💾 What does this code show? (Positions start at 0.)
    let friends = ["Kabir", "Arjun", "Riya"];
    show(friends[1]); (a) Arjun (b) Kabir (c) Riya
25. 25.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) the same screen (c) a clear next step (d) a dead end
26. 26.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) the phone is lost (c) you send a message (d) the app is closed
27. 27.Which of these is true of a wireframe? (a) has the real colours (b) shows where things go (c) looks like the real app (d) shows the real fonts
28. 28.Which of these fits saving in the cloud? (a) notes to read offline (b) the sound on/off setting (c) photos on two devices (d) a draft you are typing
29. 29.🔢 In a food-order flow, which comes first: “add it to the cart” or “pay for the order”? (a) add it to the cart (b) pay for the order
30. 30.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) read a question (c) see if it is right (d) tap “Start quiz”
31. 31.🧭 Which part of navigation goes to the last screen? (a) a menu button (b) the back button (c) a tab bar
32. 32.💾 What number does this code show?
    let songs = ["Kites", "Sunrise", "Stars", "Ocean"];
    songs.push("Rain");
    show(songs.length);
33. 33.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) write a caption (b) take the photo (c) post the photo (d) add a filter
34. 34.Which of these is about UI (the look)? (a) how fast a task is done (b) the theme colours (c) how easy sign-up is (d) how users feel after
35. 35.True or false: a class leaderboard fits saving on the phone. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) the icon shapes (b) how many taps it takes (c) how users feel after (d) how easy sign-up is
37. 37.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Address → Offers → Menu
    Design B: Home → Cart → Offers → Confirm
38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 32 px tall
    Help button: 56 px tall
    Done button: 52 px tall
39. 39.🎨 UI stands for user ___. (a) internet (b) idea (c) interface (d) input
40. 40.🔢 In a sign-up flow, which comes FIRST? (a) type name and email (b) enter the code sent (c) open the app (d) tap “Sign up”

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