App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 151 · 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 part of navigation opens a list of pages? (a) a tab bar (b) the back button (c) a menu button
2. 2.🎨 A beautiful app that confuses everyone has ___. (a) perfect UX (b) good UX but poor UI (c) good UI but poor UX (d) no UI at all
3. 3.🔢 In a sign-up flow, which comes LAST? (a) enter the code sent (b) type name and email (c) open the app (d) see the home screen
4. 4.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Shop → Size → Pay → Offers
   Design B: Home → Shop → Offers → Menu → Search → Address → Size
5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Help page”
   2. tap the Settings tab
   3. open “Edit photo”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Badges”
   2. open “Friend list”
   3. tap the Home tab
   How many times must you tap Back to reach the main screen of this tab?
7. 7.True or false: a final design uses plain grey boxes. (a) True (b) False
8. 8.🔢 In a photo-post flow, which comes first: “open the camera screen” or “post the photo”? (a) post the photo (b) open the camera screen
9. 9.✏️ What is a wireframe? (a) the finished app (b) a charging cable (c) a type of password (d) a simple screen sketch
10. 10.🔢 In a food-order flow, which comes first: “track the order” or “pick a dish”? (a) track the order (b) pick a dish
11. 11.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. open “Video”
    3. tap the Home tab
    4. open “Friend list”
    5. open “Help page”
    Which screen are you on now? (a) Video (b) Friend list (c) Match report (d) Help page
12. 12.Which colour pair is hard to read? (a) white on dark green (b) white on black (c) yellow on white (d) black on pale grey
13. 13.Which of these is true of a tab bar? (a) goes to the last screen (b) undoes one move (c) sits at the bottom (d) opens a list of pages
14. 14.True or false: grey text on grey is good button design. (a) True (b) False
15. 15.Which of these is true of a final design? (a) has no real colours (b) uses plain grey boxes (c) uses the final pictures (d) is a quick sketch
16. 16.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
17. 17.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 21 px
    Menu: 17 px
    Title: 18 px
    Footer: 11 px
18. 18.True or false: a tiny 20 px button is good button design. (a) False (b) True
19. 19.💾 What does this code show? (Positions start at 0.)
    let songs = ["Kites", "Ocean", "Monsoon", "Stars", "Sunrise"];
    show(songs[0]); (a) Ocean (b) Monsoon (c) Stars (d) Kites
20. 20.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. open “Help page”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
21. 21.🔘 Our rule: buttons are at least 48 px tall. The Send button is 44 px tall. How many px taller must it be?
22. 22.Which of these fits saving on the phone? (a) the sound on/off setting (b) a class leaderboard (c) a shared to-do list (d) photos on two devices
23. 23.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ filter buttons ]
    [ Save button ]
    [ menu icon ]
    [ list of items ] (a) list of items (b) Save button (c) filter buttons (d) menu icon
24. 24.Which of these is about UX (the experience)? (a) the screen layout (b) the font size (c) the button colours (d) how many taps it takes
25. 25.♿ A screen has 5 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
26. 26.🧭 Where is a tab bar usually placed in a phone app? (a) at the bottom (b) nowhere (c) inside a button (d) in the middle
27. 27.True or false: a wireframe is a quick sketch. (a) True (b) False
28. 28.True or false: how easy sign-up is is about UI (the look). (a) False (b) True
29. 29.True or false: strong colour contrast is good button design. (a) False (b) True
30. 30.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ tab bar ]
    [ big picture ]
    [ search box ]
    [ Save button ]
    [ top bar ] (a) top bar (b) big picture (c) search box (d) tab bar
31. 31.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) the same screen (c) a dead end (d) a clear next step
32. 32.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Menu → Results → Address
    Design B: Home → Offers → Search
33. 33.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 68 px tall
    Save button: 64 px tall
    Help button: 72 px tall
    Cancel button: 28 px tall (a) Help (b) Cancel (c) Save (d) Done
34. 34.Which of these is true of a menu button? (a) switches main sections (b) opens a list of pages (c) undoes one move (d) goes to the last screen
35. 35.💾 What number does this code show?
    let songs = ["Monsoon", "Sunrise", "Ocean", "Rain"];
    songs.push("Kites");
    show(songs.length);
36. 36.🔢 In a photo-post flow, which comes first: “open the camera screen” or “write a caption”? (a) write a caption (b) open the camera screen
37. 37.🎨 Is this about UI or UX: the screen layout? (a) UX (b) UI
38. 38.🔢 In a food-order flow, which comes LAST? (a) track the order (b) check the cart (c) add it to the cart (d) open the menu
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Pay → Pens → Search
    Design B: Home → Address → Cart → Confirm
40. 40.💾 What number does this code show?
    let stars = 8;
    stars = stars - 6;
    stars = stars + 1;
    show(stars);

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