App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 297 · 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 a quiz-app flow, which comes first: “read a question” or “see the final score”? (a) see the final score (b) read a question
2. 2.🔀 Why plan the user flow before building? (a) so each step is clear (b) to add more taps (c) to skip testing (d) to hide the buttons
3. 3.✏️ A box with a cross in a wireframe usually means ___. (a) an error (b) a closed app (c) a picture goes here (d) delete this
4. 4.True or false: a wireframe uses plain grey boxes. (a) False (b) True
5. 5.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. open “Badges”
   3. open “Video”
   Which screen are you on now? (a) Search (b) Home (c) Badges (d) Video
6. 6.🎨 UI stands for user ___. (a) interface (b) idea (c) input (d) internet
7. 7.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Match report”
   2. open “Friend list”
   3. tap the Profile tab
   4. tap the Search tab
   How many times must you tap Back to reach the main screen of this tab?
9. 9.True or false: the font size is about UI (the look). (a) True (b) False
10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 52 px tall
    Done button: 64 px tall
    Save button: 64 px tall
    Start button: 52 px tall
11. 11.🔢 In a photo-post flow, which comes FIRST? (a) post the photo (b) add a filter (c) open the camera screen (d) take the photo
12. 12.💾 What number does this code show?
    let notes = ["Art", "Hindi", "Science", "Music"];
    notes.push("Maths");
    notes.push("Sports");
    show(notes.length);
13. 13.🧭 Which part of navigation sits at the bottom? (a) a tab bar (b) the back button (c) a menu button
14. 14.🔢 In a sign-up flow, which comes first: “make a password” or “enter the code sent”? (a) make a password (b) enter the code sent
15. 15.True or false: how fast a task is done is about UI (the look). (a) True (b) False
16. 16.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
17. 17.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) icons with no labels (d) strong colour contrast
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 16 px
    Title: 15 px
    Hint: 15 px
    Body text: 10 px
19. 19.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a wireframe (b) a final design
20. 20.🔢 In a food-order flow, which comes first: “pay for the order” or “add it to the cart”? (a) add it to the cart (b) pay for the order
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Address → Results → Search → Pay → Pens → Confirm
    Design B: Home → Confirm → Pens → Size → Cart
22. 22.🔍 Which is the odd one out? (a) tiny tap areas (b) strong colour contrast (c) icons with no labels (d) sudden loud sounds
23. 23.Which of these is about UI (the look)? (a) how fast a task is done (b) whether users get lost (c) the font size (d) how easy sign-up is
24. 24.🔍 Which is the odd one out? (a) how users feel after (b) the icon shapes (c) how easy sign-up is (d) how fast a task is done
25. 25.🔍 Which is the odd one out? (a) how users feel after (b) the theme colours (c) the screen layout (d) the button colours
26. 26.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. tap Back
    3. open “Edit photo”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
27. 27.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a wireframe (b) a final design
28. 28.🔢 In a food-order flow, what comes right after “pay for the order”? (a) track the order (b) check the cart (c) open the menu (d) pick a dish
29. 29.♿ A screen has 8 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
30. 30.💾 In most code, the first item of a list is at position ___. (a) 1 (b) 0 (c) 2 (d) 10
31. 31.Which of these is true of a final design? (a) is a quick sketch (b) has the real colours (c) shows where things go (d) has no real colours
32. 32.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Menu → Results → Address → Size → Offers → Search
    Design B: Home → Size → Shop
33. 33.💾 pop() takes off the last item. What does this code show?
    let friends = ["Arjun", "Zoya", "Aman"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Aman (b) Arjun (c) Zoya
34. 34.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Results → Confirm → Shop → Item → Size
    Design B: Home → Offers → Pay → Cart → Results → Pens
35. 35.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) check the cart (c) open the menu (d) add it to the cart
36. 36.💾 What number does this code show?
    let score = 7;
    score = score - 7;
    score = score + 5;
    show(score);
37. 37.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. open “Match report”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
38. 38.True or false: how fast a task is done is about UX (the experience). (a) True (b) False
39. 39.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. tap Back
    3. tap the Lessons tab
    Which screen are you on now? (a) Lessons (b) Me (c) Quiz (d) Score card
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 21 px
    Label: 18 px
    Hint: 19 px

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