App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 127 · 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. Which button is too small?
   Send button: 48 px tall
   Next button: 60 px tall
   Help button: 32 px tall (a) Send (b) Help (c) Next
2. 2.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
3. 3.🔀 What is a user flow? (a) the path through screens (b) a colour theme (c) a charging cable (d) a type of font
4. 4.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) track the order (b) pick a dish (c) check the cart (d) pay for the order
5. 5.🔢 In a sign-up flow, what comes right after “type name and email”? (a) see the home screen (b) enter the code sent (c) open the app (d) make a password
6. 6.Which of these fits saving on the phone? (a) a shared to-do list (b) chat messages to friends (c) a draft you are typing (d) a class leaderboard
7. 7.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Map”
   2. tap the Home tab
   3. open “Video”
   4. open “Help page”
   5. open “Map”
   Which screen are you on now? (a) Help page (b) Map (c) Video (d) Home
8. 8.🔢 In a sign-up flow, what comes right after “tap “Sign up””? (a) type name and email (b) make a password (c) open the app (d) see the home screen
9. 9.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a final design (b) a wireframe
10. 10.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read
11. 11.🔢 In a sign-up flow, which comes first: “enter the code sent” or “open the app”? (a) enter the code sent (b) open the app
12. 12.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
13. 13.💾 Where should the app save your last game level: on the phone or in the cloud? (a) in the cloud (b) on the phone
14. 14.♿ Why add captions to videos? (a) so anyone can follow (b) to add colour (c) to hide the sound (d) to slow them down
15. 15.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
16. 16.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) the back button (c) a tab bar
17. 17.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
18. 18.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Address → Size → Search
    Design B: Home → Cart → Offers
19. 19.True or false: a final design uses plain grey boxes. (a) True (b) False
20. 20.💾 In most code, the first item of a list is at position ___. (a) 2 (b) 10 (c) 0 (d) 1
21. 21.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 32 px tall. How many px taller must it be?
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 24 px
    Footer: 21 px
    Title: 17 px
23. 23.🖼️ In this wireframe (top to bottom), what is right below the search box?
    [ Add button ]
    [ search box ]
    [ title text ]
    [ menu icon ]
    [ tab bar ] (a) menu icon (b) title text (c) Add button (d) tab bar
24. 24.🎨 Is this about UI or UX: how easy sign-up is? (a) UX (b) UI
25. 25.💾 Data saved only on the phone is lost when ___. (a) the app is closed (b) the phone is lost (c) the screen turns off (d) you send a message
26. 26.🔍 Which is the odd one out? (a) how many taps it takes (b) how easy sign-up is (c) how fast a task is done (d) the font size
27. 27.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a text label (c) a long animation (d) a sound
28. 28.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 24 px tall
    Back button: 60 px tall
    Start button: 64 px tall (a) Back (b) Help (c) Start
29. 29.💾 What number does this code show?
    let songs = ["Rain", "Sunrise", "Ocean"];
    songs.push("Stars");
    songs.push("Monsoon");
    show(songs.length);
30. 30.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) colour-blind users (d) fast typists
31. 31.🔢 In a photo-post flow, what comes right after “take the photo”? (a) post the photo (b) open the camera screen (c) add a filter (d) write a caption
32. 32.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Offers → Confirm → Shop
    Design B: Home → Menu → Size
33. 33.🔢 In a food-order flow, what comes right after “pick a dish”? (a) check the cart (b) pay for the order (c) track the order (d) add it to the cart
34. 34.True or false: a wireframe looks like the real app. (a) True (b) False
35. 35.🧭 Why should every screen show where you are? (a) to use more battery (b) so users do not get lost (c) to hide the menu (d) to look busy
36. 36.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
37. 37.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
38. 38.True or false: a final design shows where things go. (a) False (b) True
39. 39.Which of these is about UI (the look)? (a) how users feel after (b) the theme colours (c) how fast a task is done (d) whether users get lost
40. 40.True or false: the theme colours is about UI (the look). (a) False (b) True

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