App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 622 · 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.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
2. 2.💾 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
3. 3.💾 What number does this code show?
   let stars = 9;
   stars = stars - 8;
   stars = stars + 5;
   show(stars);
4. 4.🔢 In a sign-up flow, which comes LAST? (a) enter the code sent (b) see the home screen (c) tap “Sign up” (d) open the app
5. 5.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
6. 6.True or false: a clear word like Save is good button design. (a) True (b) False
7. 7.True or false: buttons almost touching is good button design. (a) True (b) False
8. 8.🔘 Our rule: buttons are at least 48 px tall. The Save button is 36 px tall. How many px taller must it be?
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Size → Item
   Design B: Home → Confirm → Pay → Shop → Size → Search
10. 10.🔢 In a food-order flow, which comes FIRST? (a) open the menu (b) add it to the cart (c) pick a dish (d) check the cart
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 56 px tall
    Help button: 40 px tall
    Send button: 64 px tall (a) Save (b) Send (c) Help
12. 12.Which of these fits saving in the cloud? (a) notes to read offline (b) a draft you are typing (c) your last game level (d) a class leaderboard
13. 13.💾 Which works with no internet at all? (a) a cloud leaderboard (b) a shared chat (c) a cloud backup (d) data saved on the phone
14. 14.True or false: how users feel after is about UI (the look). (a) True (b) False
15. 15.💾 What does this code show? (Positions start at 0.)
    let songs = ["Sunrise", "Ocean", "Stars"];
    show(songs[2]); (a) Ocean (b) Stars (c) Sunrise
16. 16.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap the Profile tab
    3. tap the Home tab
    Which screen are you on now? (a) Friend list (b) Home (c) Profile (d) Search
17. 17.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
18. 18.True or false: a wireframe uses plain grey boxes. (a) False (b) True
19. 19.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
20. 20.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. tap Back
    3. open “Match report”
    4. tap Back
    5. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
21. 21.🧭 Tapping a tab usually takes you to ___. (a) that tab’s main screen (b) a random page (c) the last app used (d) the phone settings
22. 22.Which colour pair is easy to read? (a) white on black (b) red on green (c) pale pink on white (d) yellow on white
23. 23.💾 What number does this code show?
    let friends = ["Zoya", "Arjun", "Riya", "Meera"];
    friends.push("Aman");
    friends.push("Kabir");
    show(friends.length);
24. 24.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. open “Edit photo”
    3. tap Back
    4. tap Back
    5. tap the Settings tab
    Which screen are you on now? (a) Badges (b) Settings (c) Feed (d) Edit photo
25. 25.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ Add button ]
    [ menu icon ]
    [ list of items ]
    [ filter buttons ]
    [ tab bar ]
    [ top bar ] (a) list of items (b) filter buttons (c) tab bar (d) Add button
26. 26.🔢 In a quiz-app flow, what comes right after “read a question”? (a) see the final score (b) tap “Start quiz” (c) see if it is right (d) pick an answer
27. 27.Which of these is about UI (the look)? (a) how easy sign-up is (b) the screen layout (c) whether users get lost (d) how many taps it takes
28. 28.🔢 In a food-order flow, what comes right after “pick a dish”? (a) pay for the order (b) open the menu (c) add it to the cart (d) check the cart
29. 29.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) post the photo (b) take the photo (c) write a caption (d) add a filter
30. 30.🧭 Which part of navigation undoes one move? (a) a tab bar (b) a menu button (c) the back button
31. 31.🔢 In a photo-post flow, what comes right after “write a caption”? (a) add a filter (b) open the camera screen (c) take the photo (d) post the photo
32. 32.🔍 Which is the odd one out? (a) how users feel after (b) the button colours (c) the theme colours (d) the font size
33. 33.🔢 In a sign-up flow, which comes first: “enter the code sent” or “make a password”? (a) make a password (b) enter the code sent
34. 34.Which of these is true of a wireframe? (a) is a quick sketch (b) has the real colours (c) shows the real fonts (d) uses the final pictures
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Address → Pens → Results → Cart → Search → Item
    Design B: Home → Pens → Shop → Search → Offers → Item
36. 36.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Menu → Shop → Offers
    Design B: Home → Search → Shop (a) Design A (b) Design B
37. 37.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. tap the Settings tab
    3. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
38. 38.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Size → Item → Menu
    Design B: Home → Cart → Results → Shop (a) Design A (b) Design B
39. 39.🎨 Is this about UI or UX: whether users get lost? (a) UX (b) UI
40. 40.Which of these makes the app harder to use? (a) colour as the only clue (b) labels on every icon (c) big touch targets (d) captions on videos

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