App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 579 · 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?
   Send button: 44 px tall
   Start button: 60 px tall
   Back button: 36 px tall
   Save button: 56 px tall
2. 2.🔢 In a sign-up flow, what comes right after “type name and email”? (a) open the app (b) tap “Sign up” (c) enter the code sent (d) make a password
3. 3.🔢 In a food-order flow, which comes first: “pay for the order” or “pick a dish”? (a) pay for the order (b) pick a dish
4. 4.💾 Which works with no internet at all? (a) a cloud leaderboard (b) data saved on the phone (c) a shared chat (d) a cloud backup
5. 5.True or false: the sound on/off setting fits saving on the phone. (a) False (b) True
6. 6.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Confirm → Cart → Shop
   Design B: Home → Confirm → Pay → Size → Pens → Cart → Address (a) Design A (b) Design B
7. 7.Which of these is true of a menu button? (a) goes to the last screen (b) opens a list of pages (c) undoes one move (d) switches main sections
8. 8.🔢 In a photo-post flow, what comes right after “add a filter”? (a) open the camera screen (b) post the photo (c) write a caption (d) take the photo
9. 9.🖼️ In this wireframe (top to bottom), what is right above the big picture?
   [ menu icon ]
   [ Add button ]
   [ big picture ]
   [ tab bar ]
   [ title text ]
   [ filter buttons ] (a) Add button (b) menu icon (c) filter buttons (d) title text
10. 10.Which of these is about UI (the look)? (a) how users feel after (b) how many taps it takes (c) the theme colours (d) how fast a task is done
11. 11.Which of these is true of a wireframe? (a) shows the real fonts (b) uses the final pictures (c) has the real colours (d) is a quick sketch
12. 12.💾 What number does this code show?
    let stars = 8;
    stars = stars - 1;
    stars = stars + 1;
    show(stars);
13. 13.🔍 Which is the odd one out? (a) captions on videos (b) tiny tap areas (c) fast-flashing lights (d) colour as the only clue
14. 14.True or false: a wireframe uses plain grey boxes. (a) True (b) False
15. 15.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Menu → Size → Pay
    Design B: Home → Size → Address → Menu → Pens
16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Item → Confirm → Shop
    Design B: Home → Confirm → Item
17. 17.🎨 Fewer taps to finish a task usually means ___. (a) a bigger app (b) more colours (c) better UX (d) worse UX
18. 18.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) on the phone (b) in the cloud
19. 19.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
20. 20.🧭 Which part of navigation sits at the bottom? (a) the back button (b) a tab bar (c) a menu button
21. 21.🧭 Where is a tab bar usually placed in a phone app? (a) inside a button (b) nowhere (c) at the bottom (d) in the middle
22. 22.Which of these fits saving in the cloud? (a) the sound on/off setting (b) a draft you are typing (c) photos on two devices (d) notes to read offline
23. 23.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 18 px
    Footer: 24 px
    Menu: 12 px
24. 24.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
25. 25.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
26. 26.💾 What number does this code show?
    let notes = ["Music", "Maths", "Art", "Sports"];
    notes.push("Science");
    notes.push("Hindi");
    show(notes.length);
27. 27.Which of these fits saving in the cloud? (a) notes to read offline (b) a class leaderboard (c) the sound on/off setting (d) a draft you are typing
28. 28.💾 What number does this code show?
    let songs = ["Sunrise", "Rain", "Monsoon"];
    songs.push("Ocean");
    show(songs.length);
29. 29.🔢 In a photo-post flow, which comes LAST? (a) open the camera screen (b) add a filter (c) take the photo (d) post the photo
30. 30.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap the Profile tab
    3. open “Badges”
    Which screen are you on now? (a) Search (b) Badges (c) Video (d) Home
31. 31.✏️ What is a wireframe? (a) a type of password (b) a simple screen sketch (c) a charging cable (d) the finished app
32. 32.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ Add button ]
    [ menu icon ]
    [ filter buttons ]
    [ Save button ] (a) menu icon (b) filter buttons (c) Add button
33. 33.🔍 Which is the odd one out? (a) whether users get lost (b) how users feel after (c) the screen layout (d) how many taps it takes
34. 34.🔢 In a quiz-app flow, which comes first: “see if it is right” or “see the final score”? (a) see the final score (b) see if it is right
35. 35.🎨 Is this about UI or UX: how fast a task is done? (a) UX (b) UI
36. 36.🎨 A beautiful app that confuses everyone has ___. (a) good UI but poor UX (b) no UI at all (c) good UX but poor UI (d) perfect UX
37. 37.True or false: a big, easy tap area is good button design. (a) True (b) False
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 16 px
    Title: 23 px
    Hint: 11 px (a) Footer (b) Hint (c) Title
39. 39.🧭 About how many tabs suit a tab bar best? (a) 3 to 5 (b) 1 (c) 10 to 12 (d) 20
40. 40.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. tap Back
    3. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?

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