App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 430 · 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.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Cancel button: 60 px tall
   Done button: 28 px tall
   Save button: 64 px tall (a) Save (b) Cancel (c) Done
2. 2.🖼️ In this wireframe (top to bottom), what is right above the top bar?
   [ Add button ]
   [ tab bar ]
   [ top bar ]
   [ filter buttons ]
   [ menu icon ] (a) Add button (b) tab bar (c) filter buttons (d) menu icon
3. 3.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
4. 4.🔢 In a quiz-app flow, which comes first: “read a question” or “see if it is right”? (a) read a question (b) see if it is right
5. 5.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 13 px
   Title: 18 px
   Caption: 17 px
   Body text: 28 px (a) Title (b) Footer (c) Caption (d) Body text
6. 6.🖼️ In this wireframe (top to bottom), what is right above the tab bar?
   [ list of items ]
   [ tab bar ]
   [ menu icon ]
   [ Add button ] (a) Add button (b) menu icon (c) list of items
7. 7.💾 What does this code show? (Positions start at 0.)
   let notes = ["Sports", "Science", "Music", "Hindi"];
   show(notes[0]); (a) Science (b) Hindi (c) Sports (d) Music
8. 8.Which of these is about UX (the experience)? (a) the font size (b) the theme colours (c) the icon shapes (d) how many taps it takes
9. 9.🔀 Why plan the user flow before building? (a) so each step is clear (b) to skip testing (c) to hide the buttons (d) to add more taps
10. 10.🔍 Which is the odd one out? (a) the screen layout (b) the icon shapes (c) the button colours (d) whether users get lost
11. 11.🔘 Our rule: buttons are at least 48 px tall. The Next button is 40 px tall. How many px taller must it be?
12. 12.💾 What number does this code show?
    let friends = ["Aman", "Kabir"];
    friends.push("Arjun");
    show(friends.length);
13. 13.💾 What does this code show? (Positions start at 0.)
    let notes = ["Maths", "Sports", "Hindi", "Music"];
    show(notes[0]); (a) Music (b) Maths (c) Sports (d) Hindi
14. 14.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 11 px
    Footer: 24 px
    Menu: 23 px
    Caption: 24 px (a) Menu (b) Title (c) Caption (d) Footer
15. 15.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. open “Match report”
    3. tap Back
    4. tap the Settings tab
    Which screen are you on now? (a) Feed (b) Match report (c) Chat (d) Settings
16. 16.🖼️ In this wireframe (top to bottom), what is right below the filter buttons?
    [ search box ]
    [ filter buttons ]
    [ list of items ]
    [ top bar ] (a) search box (b) top bar (c) list of items
17. 17.✏️ Why draw a wireframe before coding? (a) it runs the app (b) it adds colours (c) changes are quick (d) it saves data
18. 18.Which colour pair is hard to read? (a) black on pale grey (b) dark blue on black (c) white on dark green (d) white on black
19. 19.🔀 A screen with no way forward or back is called a ___. (a) shortcut (b) home screen (c) dead end (d) tab bar
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 11 px
    Caption: 24 px
    Menu: 21 px
21. 21.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Address → Menu → Shop → Pay
    Design B: Home → Pay → Shop (a) Design A (b) Design B
22. 22.🔍 Which is the odd one out? (a) how users feel after (b) the font size (c) the button colours (d) the icon shapes
23. 23.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a dead end (c) a clear next step (d) the same screen
24. 24.🔢 In a food-order flow, which comes FIRST? (a) add it to the cart (b) check the cart (c) open the menu (d) track the order
25. 25.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a menu button (c) a tab bar
26. 26.🎨 Is this about UI or UX: the icon shapes? (a) UX (b) UI
27. 27.Which of these fits saving in the cloud? (a) your last game level (b) chat messages to friends (c) a draft you are typing (d) notes to read offline
28. 28.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) see the final score (b) pick an answer (c) tap “Start quiz” (d) read a question
29. 29.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 13 px
    Footer: 22 px
    Label: 23 px
    Menu: 11 px
    Title: 10 px
30. 30.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Add button ]
    [ list of items ]
    [ search box ]
    [ top bar ]
    [ filter buttons ] (a) list of items (b) top bar (c) search box (d) filter buttons
31. 31.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
32. 32.🧭 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
33. 33.💾 What is a variable? (a) a type of screen (b) a picture (c) a phone setting (d) a named box for a value
34. 34.🧭 Which part of navigation undoes one move? (a) the back button (b) a tab bar (c) a menu button
35. 35.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. tap Back
    3. open “Video”
    4. open “Badges”
    How many times must you tap Back to reach the main screen of this tab?
36. 36.True or false: the screen layout is about UX (the experience). (a) False (b) True
37. 37.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap the Home tab
    3. open “Video”
    4. open “Edit photo”
    5. tap the Home tab
    Which screen are you on now? (a) Edit photo (b) Video (c) Home (d) Match report
38. 38.🌗 Is red on green easy or hard to read on a button? (a) hard to read (b) easy to read
39. 39.🔢 In a photo-post flow, what comes right after “add a filter”? (a) write a caption (b) take the photo (c) open the camera screen (d) post the photo
40. 40.♿ Why add captions to videos? (a) so anyone can follow (b) to slow them down (c) to hide the sound (d) to add colour

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