App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 149 · 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 class leaderboard fits saving in the cloud. (a) False (b) True
2. 2.💾 What does this code show? (Positions start at 0.)
   let friends = ["Meera", "Aman", "Arjun"];
   show(friends[2]); (a) Meera (b) Arjun (c) Aman
3. 3.🧭 Which part of navigation sits at the bottom? (a) the back button (b) a tab bar (c) a menu button
4. 4.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Menu → Pens → Pay → Size
   Design B: Home → Menu → Shop
5. 5.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) home screen (c) shortcut (d) dead end
6. 6.🔢 In a quiz-app flow, what comes right after “read a question”? (a) pick an answer (b) see the final score (c) see if it is right (d) tap “Start quiz”
7. 7.🔢 In a food-order flow, which comes first: “check the cart” or “pay for the order”? (a) pay for the order (b) check the cart
8. 8.🧭 Which part of navigation switches main sections? (a) the back button (b) a menu button (c) a tab bar
9. 9.🔀 What is a user flow? (a) a type of font (b) a colour theme (c) a charging cable (d) the path through screens
10. 10.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Badges”
    3. tap Back
    4. open “Help page”
    5. tap Back
    Which screen are you on now? (a) Badges (b) Help page (c) Search (d) Home
11. 11.Which of these is true of a menu button? (a) hides extra links (b) shows 3 to 5 icons (c) switches main sections (d) sits at the bottom
12. 12.Which of these is true of a tab bar? (a) opens a list of pages (b) hides extra links (c) switches main sections (d) goes to the last screen
13. 13.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) on the phone (b) in the cloud
14. 14.🔍 Which is the odd one out? (a) fast-flashing lights (b) text that can grow (c) strong colour contrast (d) captions on videos
15. 15.Which of these is about UI (the look)? (a) whether users get lost (b) the theme colours (c) how easy sign-up is (d) how many taps it takes
16. 16.💾 Which can hold many values in order? (a) a button (b) a single number (c) a switch (d) a list
17. 17.🔢 In a sign-up flow, which comes first: “type name and email” or “tap “Sign up””? (a) type name and email (b) tap “Sign up”
18. 18.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
19. 19.🔢 In a photo-post flow, what comes right after “take the photo”? (a) open the camera screen (b) add a filter (c) post the photo (d) write a caption
20. 20.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) text that can grow (d) tiny tap areas
21. 21.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Search
    Design B: Home → Results → Pens → Search (a) Design A (b) Design B
22. 22.🔘 Our rule: buttons are at least 48 px tall. The Next button is 20 px tall. How many px taller must it be?
23. 23.Which of these fits saving in the cloud? (a) your last game level (b) notes to read offline (c) a class leaderboard (d) the sound on/off setting
24. 24.✏️ Why draw a wireframe before coding? (a) it runs the app (b) it adds colours (c) changes are quick (d) it saves data
25. 25.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
26. 26.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a tab bar (c) a menu button
27. 27.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) the battery (c) the server (d) fast typists
28. 28.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) to hide the buttons (d) so each step is clear
29. 29.Which of these makes the app harder to use? (a) colour as the only clue (b) text that can grow (c) big touch targets (d) strong colour contrast
30. 30.🔘 Our rule: buttons are at least 48 px tall. The Save button is 24 px tall. How many px taller must it be?
31. 31.True or false: the sound on/off setting fits saving in the cloud. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) sudden loud sounds (d) text that can grow
33. 33.🧭 Why should every screen show where you are? (a) to use more battery (b) to look busy (c) to hide the menu (d) so users do not get lost
34. 34.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. tap the Search tab
    3. open “Edit photo”
    Which screen are you on now? (a) Home (b) Search (c) Badges (d) Edit photo
35. 35.💾 pop() takes off the last item. What does this code show?
    let friends = ["Kabir", "Arjun", "Riya", "Meera"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Arjun (b) Riya (c) Meera (d) Kabir
36. 36.💾 pop() takes off the last item. What does this code show?
    let songs = ["Ocean", "Sunrise", "Rain", "Kites"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Ocean (b) Rain (c) Sunrise (d) Kites
37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 64 px tall
    Send button: 56 px tall
    Save button: 28 px tall
    Next button: 60 px tall (a) Next (b) Save (c) Help (d) Send
38. 38.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Menu → Pay → Confirm
    Design B: Home → Search → Pens → Offers → Results → Menu → Size
39. 39.🔀 In a good flow, each screen should lead to ___. (a) a clear next step (b) the same screen (c) a random page (d) a dead end
40. 40.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder

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