App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 126 · 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. How many of these buttons follow the rule?
   Cancel button: 48 px tall
   Back button: 40 px tall
   Next button: 32 px tall
   Send button: 52 px tall
2. 2.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) check the cart (c) open the menu (d) add it to the cart
3. 3.Which colour pair is easy to read? (a) light grey on white (b) yellow on white (c) white on dark green (d) pale pink on white
4. 4.💾 What number does this code show?
   let stars = 3;
   stars = stars - 3;
   stars = stars + 3;
   show(stars);
5. 5.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
6. 6.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ big picture ]
   [ Add button ]
   [ title text ]
   [ list of items ]
   [ top bar ] (a) Add button (b) big picture (c) list of items (d) top bar
7. 7.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Back button: 64 px tall
   Send button: 56 px tall
   Save button: 32 px tall
8. 8.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Offers → Item
   Design B: Home → Confirm → Shop → Search → Pens → Item → Menu (a) Design B (b) Design A
9. 9.🔘 Our rule: buttons are at least 48 px tall. The Save button is 28 px tall. How many px taller must it be?
10. 10.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Quiz tab
    2. open “Video”
    3. tap Back
    4. tap the Quiz tab
    5. open “Match report”
    Which screen are you on now? (a) Lessons (b) Video (c) Quiz (d) Match report
11. 11.🔢 In a photo-post flow, which comes first: “take the photo” or “post the photo”? (a) take the photo (b) post the photo
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 12 px
    Label: 12 px
    Title: 17 px
    Caption: 24 px
    Body text: 19 px
13. 13.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. tap Back
    3. open “Help page”
    Which screen are you on now? (a) Quiz (b) Help page (c) Lessons (d) Badges
14. 14.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. open “Map”
    3. open “Video”
    4. tap the Lessons tab
    5. open “Edit photo”
    Which screen are you on now? (a) Video (b) Map (c) Edit photo (d) Help page
15. 15.True or false: a class leaderboard fits saving on the phone. (a) True (b) False
16. 16.🔘 Our rule: buttons are at least 48 px tall. The Send button is 32 px tall. How many px taller must it be?
17. 17.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
18. 18.🔘 Our rule: buttons are at least 48 px tall. The Done button is 44 px tall. How many px taller must it be?
19. 19.True or false: space between buttons is poor button design. (a) False (b) True
20. 20.✏️ What is a wireframe? (a) the finished app (b) a type of password (c) a simple screen sketch (d) a charging cable
21. 21.🔢 In a food-order flow, what comes right after “open the menu”? (a) pay for the order (b) add it to the cart (c) pick a dish (d) track the order
22. 22.True or false: a final design looks like the real app. (a) True (b) False
23. 23.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Map”
    3. tap the Chat tab
    4. tap the Chat tab
    5. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
24. 24.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) so anyone can follow (d) to slow them down
25. 25.🔀 A screen with no way forward or back is called a ___. (a) dead end (b) shortcut (c) home screen (d) tab bar
26. 26.Which of these is true of a tab bar? (a) goes to the last screen (b) switches main sections (c) hides extra links (d) opens a list of pages
27. 27.🔢 In a photo-post flow, which comes FIRST? (a) add a filter (b) take the photo (c) post the photo (d) open the camera screen
28. 28.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
29. 29.Which colour pair is easy to read? (a) pale pink on white (b) black on yellow (c) dark blue on black (d) red on green
30. 30.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
31. 31.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Pay → Cart → Results
    Design B: Home → Shop → Size → Menu (a) Design A (b) Design B
32. 32.🔍 Which is the odd one out? (a) how many taps it takes (b) whether users get lost (c) the screen layout (d) how fast a task is done
33. 33.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Video”
    2. tap Back
    3. tap the Chat tab
    How many times must you tap Back to reach the main screen of this tab?
34. 34.🧭 Why should every screen show where you are? (a) to use more battery (b) to hide the menu (c) so users do not get lost (d) to look busy
35. 35.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
36. 36.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) strong colour contrast (d) sudden loud sounds
37. 37.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) see the final score (c) tap “Start quiz” (d) see if it is right
38. 38.True or false: how fast a task is done is about UX (the experience). (a) True (b) False
39. 39.True or false: the screen layout is about UI (the look). (a) True (b) False
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 12 px
    Title: 19 px
    Menu: 25 px (a) Title (b) Body text (c) Menu

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