App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 751 · 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.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
2. 2.💾 What number does this code show?
   let friends = ["Aman", "Meera", "Zoya"];
   friends.push("Riya");
   friends.push("Arjun");
   show(friends.length);
3. 3.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 24 px
   Body text: 20 px
   Hint: 16 px
   Menu: 20 px
   Label: 18 px
5. 5.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) the back button (c) a tab bar
6. 6.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Menu → Shop → Cart
   Design B: Home → Menu → Address → Cart → Shop → Item → Results
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Friend list”
   2. tap Back
   3. tap the Chat tab
   4. open “Edit photo”
   5. tap Back
   Which screen are you on now? (a) Edit photo (b) Friend list (c) Feed (d) Chat
8. 8.Which of these makes the app harder to use? (a) sudden loud sounds (b) text that can grow (c) captions on videos (d) labels on every icon
9. 9.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Help page”
   2. tap Back
   3. open “Map”
   4. tap the Search tab
   How many times must you tap Back to reach the main screen of this tab?
10. 10.True or false: your last game level fits saving in the cloud. (a) False (b) True
11. 11.💾 What number does this code show?
    let friends = ["Arjun", "Meera", "Riya"];
    friends.push("Kabir");
    show(friends.length);
12. 12.🖼️ How many parts (boxes) does this wireframe have?
    [ list of items ]
    [ menu icon ]
    [ Add button ]
    [ title text ]
    [ top bar ]
    [ Save button ]
13. 13.Which of these is about UX (the experience)? (a) the font size (b) the icon shapes (c) the theme colours (d) whether users get lost
14. 14.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
15. 15.True or false: whether users get lost is about UX (the experience). (a) True (b) False
16. 16.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. open “Friend list”
    3. tap Back
    4. open “Friend list”
    5. tap the Search tab
    How many times must you tap Back to reach the main screen of this tab?
17. 17.💾 pop() takes off the last item. What does this code show?
    let notes = ["Art", "Science", "Music"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Science (c) Art
18. 18.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
19. 19.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Item → Cart → Shop → Offers → Address
    Design B: Home → Size → Results → Item → Pens
20. 20.♿ A screen has 6 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
21. 21.True or false: a wireframe has the real colours. (a) False (b) True
22. 22.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Cart → Pay → Address → Size
    Design B: Home → Shop → Pens → Cart → Address → Offers → Search
23. 23.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 36 px tall
    Next button: 60 px tall
    Save button: 64 px tall
    Help button: 64 px tall (a) Cancel (b) Help (c) Save (d) Next
24. 24.💾 What number does this code show?
    let songs = ["Ocean", "Stars", "Monsoon", "Kites"];
    songs.push("Sunrise");
    show(songs.length);
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 18 px
    Menu: 10 px
    Body text: 18 px
    Hint: 26 px
    Title: 26 px (a) Hint (b) Body text (c) Menu (d) Caption
26. 26.True or false: the icon shapes is about UX (the experience). (a) True (b) False
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 24 px
    Label: 13 px
    Footer: 10 px
28. 28.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a dead end (c) the same screen (d) a clear next step
29. 29.💾 Which can hold many values in order? (a) a list (b) a single number (c) a button (d) a switch
30. 30.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Results → Shop → Offers
    Design B: Home → Pay → Search → Shop → Confirm → Item → Offers
32. 32.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 12 px
    Caption: 10 px
    Footer: 23 px
    Label: 17 px
    Body text: 19 px
33. 33.🖼️ In this wireframe (top to bottom), what is right below the title text?
    [ tab bar ]
    [ Save button ]
    [ title text ]
    [ list of items ] (a) tab bar (b) list of items (c) Save button
34. 34.True or false: how many taps it takes is about UX (the experience). (a) True (b) False
35. 35.Which of these fits saving in the cloud? (a) notes to read offline (b) your last game level (c) the sound on/off setting (d) a shared to-do list
36. 36.Which colour pair is hard to read? (a) white on black (b) yellow on white (c) black on pale grey (d) white on dark green
37. 37.True or false: a wireframe shows where things go. (a) False (b) True
38. 38.True or false: notes to read offline fits saving on the phone. (a) True (b) False
39. 39.💾 Which works with no internet at all? (a) a shared chat (b) a cloud backup (c) a cloud leaderboard (d) data saved on the phone
40. 40.Which of these is true of a wireframe? (a) has the real colours (b) looks like the real app (c) is a quick sketch (d) uses the final pictures

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