App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 27 · 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.Which of these is about UX (the experience)? (a) the screen layout (b) the button colours (c) the icon shapes (d) how many taps it takes
2. 2.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) track the order (b) pick a dish (c) pay for the order (d) check the cart
3. 3.Which of these is true of a final design? (a) has no real colours (b) uses plain grey boxes (c) shows where things go (d) has the real colours
4. 4.🧭 Tapping a tab usually takes you to ___. (a) a random page (b) the last app used (c) the phone settings (d) that tab’s main screen
5. 5.🖼️ How many parts (boxes) does this wireframe have?
   [ top bar ]
   [ menu icon ]
   [ big picture ]
   [ list of items ]
   [ tab bar ]
6. 6.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
7. 7.💾 Where should the app save your last game level: on the phone or in the cloud? (a) on the phone (b) in the cloud
8. 8.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ Add button ]
   [ list of items ]
   [ top bar ]
   [ search box ] (a) search box (b) list of items (c) top bar (d) Add button
9. 9.True or false: grey text on grey is good button design. (a) True (b) False
10. 10.✏️ What is the easiest way to draw a first wireframe? (a) a phone case (b) a 3D printer (c) a microphone (d) pencil and paper
11. 11.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
12. 12.🖼️ In this wireframe (top to bottom), what is right above the top bar?
    [ list of items ]
    [ top bar ]
    [ Save button ]
    [ search box ]
    [ big picture ]
    [ Add button ] (a) list of items (b) search box (c) Add button (d) Save button
13. 13.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
14. 14.Which of these is true of a final design? (a) shows where things go (b) has no real colours (c) uses plain grey boxes (d) looks like the real app
15. 15.🔀 A screen with no way forward or back is called a ___. (a) home screen (b) shortcut (c) dead end (d) tab bar
16. 16.🧭 What does the back button usually do? (a) closes all apps (b) goes to the last screen (c) opens settings (d) deletes the page
17. 17.🔍 Which is the odd one out? (a) how users feel after (b) the screen layout (c) the font size (d) the button colours
18. 18.💾 pop() takes off the last item. What does this code show?
    let friends = ["Riya", "Zoya", "Kabir", "Aman"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Riya (b) Kabir (c) Zoya (d) Aman
19. 19.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
20. 20.Which of these fits saving on the phone? (a) chat messages to friends (b) a shared to-do list (c) a class leaderboard (d) notes to read offline
21. 21.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Edit photo”
    2. tap the Settings tab
    3. open “Friend list”
    Which screen are you on now? (a) Friend list (b) Chat (c) Feed (d) Edit photo
22. 22.True or false: photos on two devices fits saving on the phone. (a) False (b) True
23. 23.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 48 px tall
    Next button: 40 px tall
    Cancel button: 52 px tall
24. 24.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
25. 25.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 14 px
    Title: 18 px
    Hint: 15 px
    Label: 23 px
    Menu: 15 px
26. 26.Which colour pair is easy to read? (a) dark blue on black (b) red on green (c) white on dark green (d) yellow on white
27. 27.True or false: chat messages to friends fits saving in the cloud. (a) False (b) True
28. 28.🎨 Is this about UI or UX: how users feel after? (a) UI (b) UX
29. 29.Which of these is true of a wireframe? (a) has the real colours (b) has no real colours (c) uses the final pictures (d) shows the real fonts
30. 30.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a sound (d) a bright colour
31. 31.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Badges”
    3. tap Back
    4. tap the Feed tab
    5. tap the Chat tab
    How many times must you tap Back to reach the main screen of this tab?
32. 32.💾 pop() takes off the last item. What does this code show?
    let notes = ["Hindi", "Art", "Music", "Science", "Maths"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Art (b) Science (c) Hindi (d) Music
33. 33.True or false: a tiny 20 px button is poor button design. (a) True (b) False
34. 34.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
35. 35.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Results → Item → Address → Confirm
    Design B: Home → Size → Offers → Confirm (a) Design B (b) Design A
36. 36.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
37. 37.Which of these makes the app harder to use? (a) labels on every icon (b) fast-flashing lights (c) captions on videos (d) big touch targets
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 27 px
    Title: 10 px
    Hint: 27 px (a) Title (b) Menu (c) Hint
39. 39.Which of these is about UI (the look)? (a) how users feel after (b) the theme colours (c) how easy sign-up is (d) how many taps it takes
40. 40.🔘 Our rule: buttons are at least 48 px tall. The Done button is 28 px tall. How many px taller must it be?

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