App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 634 · 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.🔀 What is a user flow? (a) a charging cable (b) the path through screens (c) a colour theme (d) a type of font
2. 2.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
3. 3.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) dead end (c) home screen (d) shortcut
4. 4.🎨 Is this about UI or UX: the icon shapes? (a) UI (b) UX
5. 5.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Help page”
   2. open “Map”
   3. open “Score card”
   4. open “Edit photo”
   5. tap Back
   How many times must you tap Back to reach the main screen of this tab?
6. 6.True or false: buttons almost touching is poor button design. (a) True (b) False
7. 7.True or false: a tiny 20 px button is good button design. (a) False (b) True
8. 8.True or false: a big, easy tap area is poor button design. (a) False (b) True
9. 9.💾 Which can hold many values in order? (a) a list (b) a single number (c) a button (d) a switch
10. 10.🖼️ In this wireframe (top to bottom), what is right below the tab bar?
    [ filter buttons ]
    [ top bar ]
    [ tab bar ]
    [ list of items ]
    [ search box ]
    [ title text ] (a) list of items (b) top bar (c) search box (d) filter buttons
11. 11.Which of these is true of a tab bar? (a) goes to the last screen (b) hides extra links (c) shows 3 to 5 icons (d) undoes one move
12. 12.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. open “Badges”
    3. open “Map”
    4. open “Badges”
    5. tap the Profile tab
    Which screen are you on now? (a) Profile (b) Score card (c) Badges (d) Map
13. 13.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Feed tab
    2. open “Match report”
    3. open “Badges”
    4. tap Back
    Which screen are you on now? (a) Badges (b) Match report (c) Chat (d) Feed
14. 14.💾 What number does this code show?
    let score = 7;
    score = score - 1;
    score = score + 4;
    show(score);
15. 15.Which of these makes the app harder to use? (a) labels on every icon (b) tiny tap areas (c) text that can grow (d) captions on videos
16. 16.True or false: space between buttons is poor button design. (a) True (b) False
17. 17.Which colour pair is hard to read? (a) black on yellow (b) light grey on white (c) black on pale grey (d) white on black
18. 18.💾 What does this code show? (Positions start at 0.)
    let notes = ["Maths", "Art", "Science", "Sports", "Hindi"];
    show(notes[0]); (a) Science (b) Maths (c) Sports (d) Art
19. 19.💾 What does this code show? (Positions start at 0.)
    let friends = ["Aman", "Riya", "Zoya"];
    show(friends[0]); (a) Riya (b) Zoya (c) Aman
20. 20.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 60 px tall
    Done button: 28 px tall
    Send button: 72 px tall (a) Send (b) Done (c) Cancel
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Search
    Design B: Home → Search → Shop → Size → Confirm → Cart
22. 22.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) the phone is lost (c) the app is closed (d) you send a message
23. 23.True or false: how many taps it takes is about UI (the look). (a) False (b) True
24. 24.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) everyone (d) nobody
25. 25.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. tap the Home tab
    3. tap the Profile tab
    4. open “Score card”
    Which screen are you on now? (a) Score card (b) Edit photo (c) Search (d) Home
26. 26.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 60 px tall
    Next button: 32 px tall
    Start button: 72 px tall (a) Back (b) Start (c) Next
27. 27.♿ What should every icon-only button have for screen readers? (a) a text label (b) a sound (c) a bright colour (d) a long animation
28. 28.🖼️ In this wireframe (top to bottom), what is right above the Add button?
    [ Save button ]
    [ list of items ]
    [ Add button ]
    [ big picture ] (a) big picture (b) list of items (c) Save button
29. 29.✏️ A box with a cross in a wireframe usually means ___. (a) a closed app (b) a picture goes here (c) delete this (d) an error
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 14 px
    Hint: 18 px
    Body text: 23 px
    Footer: 24 px
    Label: 11 px
31. 31.🔢 In a food-order flow, which comes first: “add it to the cart” or “pick a dish”? (a) add it to the cart (b) pick a dish
32. 32.True or false: how easy sign-up is is about UI (the look). (a) True (b) False
33. 33.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Search → Menu → Offers → Address → Confirm → Shop
    Design B: Home → Menu → Cart → Address → Shop
34. 34.🔍 Which is the odd one out? (a) colour as the only clue (b) icons with no labels (c) strong colour contrast (d) sudden loud sounds
35. 35.💾 What number does this code show?
    let friends = ["Zoya", "Kabir", "Aman", "Arjun"];
    friends.push("Meera");
    friends.push("Riya");
    show(friends.length);
36. 36.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Item → Address → Menu
    Design B: Home → Search → Address → Shop → Menu → Results → Confirm (a) Design A (b) Design B
37. 37.True or false: a final design has the real colours. (a) False (b) True
38. 38.🧭 Tapping a tab usually takes you to ___. (a) the last app used (b) the phone settings (c) that tab’s main screen (d) a random page
39. 39.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a wireframe (b) a final design
40. 40.True or false: the screen layout is about UX (the experience). (a) False (b) True

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