App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 999 · 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.🎨 A beautiful app that confuses everyone has ___. (a) no UI at all (b) perfect UX (c) good UI but poor UX (d) good UX but poor UI
2. 2.🧭 What does the back button usually do? (a) goes to the last screen (b) deletes the page (c) closes all apps (d) opens settings
3. 3.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Video”
   2. tap the Chat tab
   3. tap the Chat tab
   4. open “Map”
   How many times must you tap Back to reach the main screen of this tab?
4. 4.🔢 In a photo-post flow, which comes first: “write a caption” or “post the photo”? (a) write a caption (b) post the photo
5. 5.🔢 In a quiz-app flow, what comes right after “read a question”? (a) pick an answer (b) see if it is right (c) tap “Start quiz” (d) see the final score
6. 6.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
7. 7.🔢 In a quiz-app flow, which comes first: “read a question” or “see the final score”? (a) read a question (b) see the final score
8. 8.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Match report”
   2. tap Back
   3. open “Friend list”
   4. tap Back
   How many times must you tap Back to reach the main screen of this tab?
9. 9.🧭 Which part of navigation opens a list of pages? (a) a tab bar (b) a menu button (c) the back button
10. 10.True or false: a final design uses plain grey boxes. (a) True (b) False
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 32 px tall
    Done button: 52 px tall
    Start button: 64 px tall
    Back button: 56 px tall (a) Cancel (b) Back (c) Start (d) Done
12. 12.True or false: “tiny tap areas” helps everyone use the app. (a) False (b) True
13. 13.🔢 In a sign-up flow, which comes FIRST? (a) tap “Sign up” (b) enter the code sent (c) open the app (d) make a password
14. 14.🔢 In a food-order flow, what comes right after “check the cart”? (a) open the menu (b) pay for the order (c) track the order (d) pick a dish
15. 15.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. open “Match report”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
16. 16.Which of these is about UX (the experience)? (a) the theme colours (b) the icon shapes (c) how fast a task is done (d) the font size
17. 17.🖼️ In this wireframe (top to bottom), what is right below the search box?
    [ title text ]
    [ search box ]
    [ big picture ]
    [ list of items ] (a) big picture (b) title text (c) list of items
18. 18.💾 What number does this code show?
    let songs = ["Sunrise", "Kites", "Ocean"];
    songs.push("Rain");
    show(songs.length);
19. 19.✏️ What is a wireframe? (a) a type of password (b) a charging cable (c) a simple screen sketch (d) the finished app
20. 20.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Size
    Design B: Home → Search → Menu → Offers → Confirm → Pay
21. 21.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Edit photo”
    2. open “Friend list”
    3. open “Match report”
    4. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
22. 22.💾 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
23. 23.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
24. 24.Which of these makes the app harder to use? (a) labels on every icon (b) captions on videos (c) big touch targets (d) icons with no labels
25. 25.True or false: grey text on grey is poor button design. (a) True (b) False
26. 26.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) take the photo (b) write a caption (c) post the photo (d) add a filter
27. 27.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
28. 28.Which colour pair is easy to read? (a) red on green (b) black on pale grey (c) light grey on white (d) dark blue on black
29. 29.🧭 Why should every screen show where you are? (a) to hide the menu (b) to look busy (c) so users do not get lost (d) to use more battery
30. 30.🧭 Which part of navigation sits at the bottom? (a) a menu button (b) the back button (c) a tab bar
31. 31.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) pick an answer (b) read a question (c) tap “Start quiz” (d) see the final score
32. 32.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
33. 33.Which of these is true of a final design? (a) has no real colours (b) has the real colours (c) is a quick sketch (d) shows where things go
34. 34.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
35. 35.Which of these is true of a wireframe? (a) shows where things go (b) shows the real fonts (c) looks like the real app (d) has the real colours
36. 36.Which colour pair is easy to read? (a) white on black (b) yellow on white (c) red on green (d) light grey on white
37. 37.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
38. 38.True or false: whether users get lost is about UX (the experience). (a) True (b) False
39. 39.Which of these is true of a final design? (a) shows where things go (b) has no real colours (c) looks like the real app (d) uses plain grey boxes
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 10 px
    Caption: 11 px
    Label: 13 px
    Title: 10 px
    Hint: 21 px

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