App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 445 · 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: text is at least 16 px. How many texts on this screen are too small?
   Caption: 21 px
   Label: 10 px
   Title: 20 px
   Footer: 18 px
   Hint: 23 px
2. 2.🔢 In a food-order flow, what comes right after “check the cart”? (a) open the menu (b) add it to the cart (c) pick a dish (d) pay for the order
3. 3.💾 What number does this code show?
   let lives = 8;
   lives = lives - 7;
   lives = lives + 3;
   show(lives);
4. 4.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Help page”
   2. tap the Search tab
   3. tap the Profile tab
   4. open “Edit photo”
   5. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Me tab
   2. tap the Lessons tab
   3. open “Map”
   4. tap the Quiz tab
   5. tap the Me tab
   How many times must you tap Back to reach the main screen of this tab?
6. 6.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
7. 7.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Pay → Item
   Design B: Home → Pens → Confirm → Cart → Offers → Shop (a) Design B (b) Design A
8. 8.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Done button: 52 px tall
   Save button: 40 px tall
   Help button: 52 px tall
9. 9.🔢 In a sign-up flow, which comes LAST? (a) tap “Sign up” (b) enter the code sent (c) type name and email (d) see the home screen
10. 10.✏️ What is a wireframe? (a) the finished app (b) a charging cable (c) a simple screen sketch (d) a type of password
11. 11.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
12. 12.True or false: grey text on grey is good button design. (a) True (b) False
13. 13.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. open “Map”
    3. tap Back
    4. open “Video”
    5. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
14. 14.Which of these fits saving on the phone? (a) a shared to-do list (b) photos on two devices (c) a draft you are typing (d) chat messages to friends
15. 15.💾 Which works with no internet at all? (a) data saved on the phone (b) a cloud leaderboard (c) a shared chat (d) a cloud backup
16. 16.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) the app is closed (c) you send a message (d) the phone is lost
17. 17.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
18. 18.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) big touch targets (d) fast-flashing lights
19. 19.🎨 Fewer taps to finish a task usually means ___. (a) worse UX (b) a bigger app (c) more colours (d) better UX
20. 20.🔘 Our rule: buttons are at least 48 px tall. The Next button is 20 px tall. How many px taller must it be?
21. 21.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
22. 22.🔢 In a quiz-app flow, which comes FIRST? (a) see the final score (b) read a question (c) pick an answer (d) tap “Start quiz”
23. 23.Which colour pair is hard to read? (a) black on pale grey (b) white on dark green (c) dark blue on black (d) white on black
24. 24.💾 What is a variable? (a) a phone setting (b) a picture (c) a named box for a value (d) a type of screen
25. 25.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) pick a dish (c) add it to the cart (d) check the cart
26. 26.🎨 Is this about UI or UX: the screen layout? (a) UI (b) UX
27. 27.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
28. 28.True or false: a final design uses plain grey boxes. (a) False (b) True
29. 29.True or false: how users feel after is about UX (the experience). (a) False (b) True
30. 30.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Cart → Address
    Design B: Home → Search → Size → Pens → Cart → Menu
31. 31.True or false: a class leaderboard fits saving on the phone. (a) True (b) False
32. 32.💾 What number does this code show?
    let points = 8;
    points = points - 6;
    points = points + 2;
    show(points);
33. 33.🔢 In a sign-up flow, which comes FIRST? (a) see the home screen (b) type name and email (c) tap “Sign up” (d) open the app
34. 34.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a wireframe (b) a final design
35. 35.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. tap Back
    3. tap the Feed tab
    4. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
36. 36.🔢 In a food-order flow, which comes FIRST? (a) add it to the cart (b) track the order (c) open the menu (d) pay for the order
37. 37.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Search tab
    2. open “Score card”
    3. tap Back
    4. tap the Profile tab
    5. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
38. 38.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ search box ]
    [ menu icon ]
    [ Save button ]
    [ filter buttons ]
    [ tab bar ] (a) Save button (b) filter buttons (c) search box (d) tab bar
39. 39.True or false: a tiny 20 px button is poor button design. (a) False (b) True
40. 40.Which of these fits saving in the cloud? (a) photos on two devices (b) the sound on/off setting (c) notes to read offline (d) your last game level

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