App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 438 · 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.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Match report”
   2. open “Help page”
   3. tap the Home tab
   4. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
2. 2.🌗 Is white on dark green easy or hard to read on a button? (a) easy to read (b) hard to read
3. 3.💾 What number does this code show?
   let friends = ["Aman", "Arjun", "Meera", "Zoya"];
   friends.push("Riya");
   friends.push("Kabir");
   show(friends.length);
4. 4.True or false: the screen layout is about UX (the experience). (a) False (b) True
5. 5.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
6. 6.💾 What number does this code show?
   let songs = ["Monsoon", "Ocean", "Rain"];
   songs.push("Sunrise");
   show(songs.length);
7. 7.🔢 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
8. 8.🎨 Is this about UI or UX: how users feel after? (a) UX (b) UI
9. 9.💾 In most code, the first item of a list is at position ___. (a) 10 (b) 1 (c) 0 (d) 2
10. 10.🎨 Who should you test the UX with? (a) only yourself (b) the app icon (c) nobody (d) real users
11. 11.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
12. 12.True or false: how easy sign-up is is about UX (the experience). (a) False (b) True
13. 13.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a sound (c) a text label (d) a bright colour
14. 14.💾 What number does this code show?
    let notes = ["Music", "Hindi", "Art"];
    notes.push("Sports");
    show(notes.length);
15. 15.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Match report”
    3. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
16. 16.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 32 px tall
    Save button: 72 px tall
    Help button: 48 px tall
    Next button: 72 px tall (a) Send (b) Save (c) Help (d) Next
17. 17.💾 What number does this code show?
    let friends = ["Aman", "Meera"];
    friends.push("Kabir");
    show(friends.length);
18. 18.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Shop → Offers
    Design B: Home → Pens → Offers → Item → Shop → Results
19. 19.🔍 Which is the odd one out? (a) the button colours (b) whether users get lost (c) the font size (d) the icon shapes
20. 20.Which of these helps everyone use the app? (a) colour as the only clue (b) strong colour contrast (c) fast-flashing lights (d) sudden loud sounds
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Confirm → Results → Search → Pens → Size → Pay
    Design B: Home → Size → Pay → Item
22. 22.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
23. 23.💾 What does this code show? (Positions start at 0.)
    let songs = ["Stars", "Ocean", "Sunrise"];
    show(songs[1]); (a) Stars (b) Ocean (c) Sunrise
24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 32 px tall
    Save button: 40 px tall
    Help button: 36 px tall
    Next button: 40 px tall
25. 25.💾 What number does this code show?
    let songs = ["Rain", "Monsoon"];
    songs.push("Ocean");
    songs.push("Kites");
    show(songs.length);
26. 26.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
27. 27.♿ Accessibility means an app works for ___. (a) nobody (b) only the coder (c) everyone (d) only experts
28. 28.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a menu button (c) a tab bar
29. 29.Which of these is about UI (the look)? (a) how many taps it takes (b) the theme colours (c) how users feel after (d) how easy sign-up is
30. 30.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. open “Badges”
    3. tap the Settings tab
    4. open “Video”
    5. tap Back
    Which screen are you on now? (a) Video (b) Settings (c) Badges (d) Feed
31. 31.Which of these is true of the back button? (a) sits at the bottom (b) shows 3 to 5 icons (c) hides extra links (d) undoes one move
32. 32.Which of these fits saving on the phone? (a) photos on two devices (b) a shared to-do list (c) notes to read offline (d) chat messages to friends
33. 33.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Cart → Size → Search
    Design B: Home → Size → Shop → Pay → Cart → Menu → Item
34. 34.🧭 Which part of navigation hides extra links? (a) a menu button (b) a tab bar (c) the back button
35. 35.💾 Which can hold many values in order? (a) a button (b) a list (c) a switch (d) a single number
36. 36.🔢 In a photo-post flow, which comes first: “open the camera screen” or “write a caption”? (a) open the camera screen (b) write a caption
37. 37.🔢 In a sign-up flow, which comes LAST? (a) make a password (b) enter the code sent (c) see the home screen (d) tap “Sign up”
38. 38.🖼️ In this wireframe (top to bottom), what is right below the big picture?
    [ Save button ]
    [ Add button ]
    [ search box ]
    [ big picture ]
    [ list of items ]
    [ top bar ] (a) top bar (b) list of items (c) Add button (d) Save button
39. 39.🔢 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
40. 40.True or false: your last game level fits saving in the cloud. (a) False (b) True

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students