App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 14 · 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.💾 pop() takes off the last item. What does this code show?
   let songs = ["Monsoon", "Ocean", "Rain"];
   songs.pop();
   show(songs[songs.length - 1]); (a) Rain (b) Ocean (c) Monsoon
2. 2.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Friend list”
   2. open “Edit photo”
   3. tap Back
   4. open “Video”
   Which screen are you on now? (a) Lessons (b) Edit photo (c) Video (d) Friend list
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Menu: 21 px
   Body text: 12 px
   Footer: 24 px
4. 4.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
5. 5.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Item → Menu → Offers → Results → Search → Cart
   Design B: Home → Offers → Shop → Results
6. 6.Which of these is true of the back button? (a) switches main sections (b) opens a list of pages (c) hides extra links (d) goes to the last screen
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Help page”
   2. tap Back
   3. open “Help page”
   4. open “Help page”
   5. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
8. 8.🔀 In a good flow, each screen should lead to ___. (a) a dead end (b) a random page (c) the same screen (d) a clear next step
9. 9.True or false: a wireframe has the real colours. (a) False (b) True
10. 10.🧭 Which part of navigation sits at the bottom? (a) a tab bar (b) the back button (c) a menu button
11. 11.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a final design (b) a wireframe
12. 12.🖼️ In this wireframe (top to bottom), what is right below the title text?
    [ tab bar ]
    [ Add button ]
    [ title text ]
    [ search box ]
    [ list of items ] (a) Add button (b) list of items (c) tab bar (d) search box
13. 13.💾 What number does this code show?
    let friends = ["Arjun", "Aman", "Riya", "Meera"];
    friends.push("Zoya");
    friends.push("Kabir");
    show(friends.length);
14. 14.🔢 In a sign-up flow, which comes first: “see the home screen” or “tap “Sign up””? (a) tap “Sign up” (b) see the home screen
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Shop → Results
    Design B: Home → Search → Menu
16. 16.🖼️ In this wireframe (top to bottom), what is right below the Add button?
    [ Save button ]
    [ Add button ]
    [ top bar ]
    [ search box ] (a) Save button (b) search box (c) top bar
17. 17.💾 Which works with no internet at all? (a) a cloud backup (b) a shared chat (c) data saved on the phone (d) a cloud leaderboard
18. 18.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Lessons tab
    2. tap the Me tab
    3. open “Match report”
    Which screen are you on now? (a) Match report (b) Me (c) Lessons (d) Quiz
19. 19.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) colour as the only clue (d) captions on videos
20. 20.💾 What does this code show? (Positions start at 0.)
    let songs = ["Stars", "Kites", "Monsoon", "Sunrise"];
    show(songs[1]); (a) Monsoon (b) Stars (c) Sunrise (d) Kites
21. 21.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 19 px
    Caption: 24 px
    Hint: 22 px
    Menu: 15 px
23. 23.Which of these fits saving on the phone? (a) photos on two devices (b) chat messages to friends (c) a class leaderboard (d) notes to read offline
24. 24.True or false: whether users get lost is about UI (the look). (a) False (b) True
25. 25.🔢 In a sign-up flow, which comes FIRST? (a) enter the code sent (b) type name and email (c) open the app (d) tap “Sign up”
26. 26.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 48 px tall
    Save button: 52 px tall
    Cancel button: 52 px tall
    Send button: 44 px tall (a) Send (b) Back (c) Cancel (d) Save
27. 27.True or false: the sound on/off setting fits saving in the cloud. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) captions on videos (b) text that can grow (c) tiny tap areas (d) big touch targets
29. 29.🔢 In a photo-post flow, what comes right after “write a caption”? (a) take the photo (b) add a filter (c) post the photo (d) open the camera screen
30. 30.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Friend list”
    3. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
31. 31.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 36 px tall
    Send button: 56 px tall
    Help button: 36 px tall
    Next button: 56 px tall
32. 32.🔘 Our rule: buttons are at least 48 px tall. The Next button is 32 px tall. How many px taller must it be?
33. 33.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) on the phone (b) in the cloud
34. 34.Which of these is true of a tab bar? (a) shows 3 to 5 icons (b) goes to the last screen (c) undoes one move (d) opens a list of pages
35. 35.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. open “Edit photo”
    3. open “Help page”
    4. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
36. 36.Which of these makes the app harder to use? (a) big touch targets (b) colour as the only clue (c) labels on every icon (d) text that can grow
37. 37.Which of these fits saving in the cloud? (a) a draft you are typing (b) the sound on/off setting (c) your last game level (d) photos on two devices
38. 38.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
39. 39.🔍 Which is the odd one out? (a) big touch targets (b) fast-flashing lights (c) icons with no labels (d) tiny tap areas
40. 40.🔢 In a food-order flow, which comes first: “pick a dish” or “track the order”? (a) track the order (b) pick a dish

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