App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 973 · 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 fits saving on the phone? (a) chat messages to friends (b) the sound on/off setting (c) photos on two devices (d) a shared to-do list
2. 2.🎨 Is this about UI or UX: how many taps it takes? (a) UX (b) UI
3. 3.🔍 Which is the odd one out? (a) the font size (b) the icon shapes (c) how users feel after (d) the button colours
4. 4.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Search tab
   2. open “Badges”
   3. tap the Home tab
   4. open “Help page”
   5. open “Badges”
   Which screen are you on now? (a) Home (b) Search (c) Help page (d) Badges
5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. tap Back
   3. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
6. 6.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Help page”
   2. open “Map”
   3. tap the Me tab
   4. tap the Lessons tab
   5. open “Edit photo”
   How many times must you tap Back to reach the main screen of this tab?
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Badges”
   2. tap Back
   3. tap the Settings tab
   4. open “Help page”
   Which screen are you on now? (a) Help page (b) Chat (c) Badges (d) Feed
8. 8.True or false: buttons almost touching is poor button design. (a) True (b) False
9. 9.🔘 Our rule: buttons are at least 48 px tall. The Done button is 40 px tall. How many px taller must it be?
10. 10.Which of these is about UX (the experience)? (a) the font size (b) how easy sign-up is (c) the screen layout (d) the theme colours
11. 11.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. open “Match report”
    3. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
12. 12.Which colour pair is easy to read? (a) black on yellow (b) yellow on white (c) red on green (d) dark blue on black
13. 13.♿ A screen has 9 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
14. 14.Which of these is about UI (the look)? (a) how users feel after (b) how fast a task is done (c) the icon shapes (d) how easy sign-up is
15. 15.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 60 px tall
    Help button: 48 px tall
    Cancel button: 48 px tall
    Start button: 40 px tall (a) Cancel (b) Help (c) Start (d) Save
16. 16.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Friend list”
    3. tap the Chat tab
    How many times must you tap Back to reach the main screen of this tab?
17. 17.True or false: space between buttons is poor button design. (a) True (b) False
18. 18.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap the Search tab
    3. tap the Profile tab
    4. open “Help page”
    5. open “Help page”
    Which screen are you on now? (a) Help page (b) Search (c) Friend list (d) Home
19. 19.Which colour pair is hard to read? (a) black on yellow (b) light grey on white (c) white on dark green (d) black on pale grey
20. 20.True or false: the font size is about UX (the experience). (a) True (b) False
21. 21.💾 pop() takes off the last item. What does this code show?
    let friends = ["Kabir", "Riya", "Zoya", "Meera", "Arjun"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Meera (b) Kabir (c) Zoya (d) Riya
22. 22.🎨 Is this about UI or UX: the font size? (a) UI (b) UX
23. 23.Which of these is true of a tab bar? (a) opens a list of pages (b) goes to the last screen (c) undoes one move (d) switches main sections
24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 36 px tall
    Cancel button: 40 px tall
    Help button: 64 px tall
    Done button: 40 px tall
25. 25.🔀 A screen with no way forward or back is called a ___. (a) dead end (b) home screen (c) tab bar (d) shortcut
26. 26.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) so each step is clear (d) to hide the buttons
27. 27.True or false: a final design uses the final pictures. (a) False (b) True
28. 28.🔢 In a food-order flow, what comes right after “open the menu”? (a) pick a dish (b) check the cart (c) track the order (d) add it to the cart
29. 29.🔢 In a sign-up flow, what comes right after “enter the code sent”? (a) tap “Sign up” (b) see the home screen (c) open the app (d) make a password
30. 30.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
31. 31.🔍 Which is the odd one out? (a) the screen layout (b) how easy sign-up is (c) how fast a task is done (d) how users feel after
32. 32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Results
    Design B: Home → Item → Menu → Size → Shop → Address (a) Design A (b) Design B
33. 33.💾 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
34. 34.💾 Data saved only on the phone is lost when ___. (a) you send a message (b) the phone is lost (c) the screen turns off (d) the app is closed
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 23 px
    Caption: 14 px
    Menu: 20 px
    Footer: 12 px
36. 36.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Shop → Pens → Offers
    Design B: Home → Pens → Pay (a) Design A (b) Design B
37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 24 px tall
    Back button: 48 px tall
    Done button: 72 px tall
    Start button: 56 px tall (a) Done (b) Back (c) Cancel (d) Start
38. 38.💾 What does this code show? (Positions start at 0.)
    let notes = ["Maths", "Hindi", "Music", "Science", "Sports"];
    show(notes[4]); (a) Sports (b) Music (c) Hindi (d) Maths
39. 39.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. open “Score card”
    3. tap Back
    Which screen are you on now? (a) Score card (b) Search (c) Home (d) Help page
40. 40.🔢 In a food-order flow, which comes first: “open the menu” or “add it to the cart”? (a) open the menu (b) add it to the cart

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