App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 707 · 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 makes the app harder to use? (a) text that can grow (b) big touch targets (c) labels on every icon (d) colour as the only clue
2. 2.✏️ What is a wireframe? (a) a simple screen sketch (b) the finished app (c) a type of password (d) a charging cable
3. 3.🧭 About how many tabs suit a tab bar best? (a) 10 to 12 (b) 1 (c) 20 (d) 3 to 5
4. 4.🧭 Where is a tab bar usually placed in a phone app? (a) at the bottom (b) inside a button (c) in the middle (d) nowhere
5. 5.✏️ Why draw a wireframe before coding? (a) it saves data (b) it adds colours (c) it runs the app (d) changes are quick
6. 6.🔢 In a food-order flow, which comes first: “check the cart” or “add it to the cart”? (a) add it to the cart (b) check the cart
7. 7.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Score card”
   2. open “Badges”
   3. tap Back
   Which screen are you on now? (a) Search (b) Home (c) Score card (d) Badges
8. 8.True or false: strong colour contrast is good button design. (a) True (b) False
9. 9.🖼️ In this wireframe (top to bottom), what is right below the title text?
   [ top bar ]
   [ filter buttons ]
   [ title text ]
   [ big picture ] (a) top bar (b) filter buttons (c) big picture
10. 10.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Pay → Results → Address
    Design B: Home → Cart → Menu → Search → Address → Results → Shop
11. 11.💾 What number does this code show?
    let notes = ["Science", "Art", "Music", "Maths"];
    notes.push("Sports");
    show(notes.length);
12. 12.🖼️ In this wireframe (top to bottom), what is right above the big picture?
    [ tab bar ]
    [ top bar ]
    [ big picture ]
    [ filter buttons ]
    [ menu icon ] (a) menu icon (b) tab bar (c) filter buttons (d) top bar
13. 13.🔢 In a food-order flow, which comes FIRST? (a) track the order (b) open the menu (c) pick a dish (d) pay for the order
14. 14.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) on the phone (b) in the cloud
15. 15.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a final design (b) a wireframe
16. 16.True or false: a wireframe shows where things go. (a) True (b) False
17. 17.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
18. 18.Which of these helps everyone use the app? (a) labels on every icon (b) colour as the only clue (c) sudden loud sounds (d) tiny tap areas
19. 19.True or false: a final design shows the real fonts. (a) False (b) True
20. 20.🔢 In a photo-post flow, which comes FIRST? (a) add a filter (b) write a caption (c) post the photo (d) open the camera screen
21. 21.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 60 px tall
    Save button: 40 px tall
    Done button: 52 px tall
    Cancel button: 48 px tall (a) Done (b) Next (c) Cancel (d) Save
22. 22.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
23. 23.Which of these is true of a tab bar? (a) undoes one move (b) sits at the bottom (c) opens a list of pages (d) hides extra links
24. 24.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap Back
    3. open “Friend list”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
25. 25.True or false: a tiny 20 px button is good button design. (a) True (b) False
26. 26.Which of these is true of a final design? (a) shows where things go (b) uses the final pictures (c) uses plain grey boxes (d) has no real colours
27. 27.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Address → Item
    Design B: Home → Results → Menu → Offers
28. 28.🔢 In a quiz-app flow, which comes first: “pick an answer” or “tap “Start quiz””? (a) tap “Start quiz” (b) pick an answer
29. 29.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap the Home tab
    3. tap the Profile tab
    4. tap the Profile tab
    How many times must you tap Back to reach the main screen of this tab?
30. 30.💾 What is a variable? (a) a phone setting (b) a named box for a value (c) a type of screen (d) a picture
31. 31.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
32. 32.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) tap “Start quiz” (c) see if it is right (d) see the final score
33. 33.🔢 In a sign-up flow, which comes first: “type name and email” or “open the app”? (a) open the app (b) type name and email
34. 34.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
35. 35.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. tap Back
    3. open “Friend list”
    Which screen are you on now? (a) Friend list (b) Map (c) Quiz (d) Lessons
36. 36.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ search box ]
    [ top bar ]
    [ tab bar ]
    [ menu icon ]
    [ title text ] (a) tab bar (b) search box (c) title text (d) top bar
37. 37.🔘 Our rule: buttons are at least 48 px tall. The Help button is 24 px tall. How many px taller must it be?
38. 38.Which of these is about UX (the experience)? (a) how easy sign-up is (b) the button colours (c) the theme colours (d) the screen layout
39. 39.🔀 What is a user flow? (a) a charging cable (b) a colour theme (c) a type of font (d) the path through screens
40. 40.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True

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