App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 790 · 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.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Video”
   2. open “Edit photo”
   3. tap the Search tab
   How many times must you tap Back to reach the main screen of this tab?
2. 2.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Cart → Results
   Design B: Home → Cart → Confirm → Search → Pens → Results → Pay
3. 3.🔍 Which is the odd one out? (a) the theme colours (b) whether users get lost (c) how users feel after (d) how fast a task is done
4. 4.🔢 In a sign-up flow, what comes right after “make a password”? (a) type name and email (b) enter the code sent (c) see the home screen (d) tap “Sign up”
5. 5.True or false: a draft you are typing fits saving in the cloud. (a) True (b) False
6. 6.✏️ What is the easiest way to draw a first wireframe? (a) a microphone (b) a phone case (c) a 3D printer (d) pencil and paper
7. 7.🎨 UI stands for user ___. (a) internet (b) interface (c) idea (d) input
8. 8.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Help page”
   2. open “Match report”
   3. open “Help page”
   How many times must you tap Back to reach the main screen of this tab?
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 17 px
   Body text: 9 px
   Menu: 18 px
   Footer: 24 px (a) Hint (b) Footer (c) Body text (d) Menu
10. 10.🔢 In a sign-up flow, which comes first: “type name and email” or “enter the code sent”? (a) type name and email (b) enter the code sent
11. 11.💾 pop() takes off the last item. What does this code show?
    let friends = ["Riya", "Zoya", "Kabir"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Kabir (b) Riya (c) Zoya
12. 12.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
13. 13.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
14. 14.🔍 Which is the odd one out? (a) the theme colours (b) how easy sign-up is (c) the icon shapes (d) the font size
15. 15.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 22 px
    Hint: 23 px
    Footer: 13 px (a) Footer (b) Body text (c) Hint
16. 16.True or false: notes to read offline fits saving in the cloud. (a) False (b) True
17. 17.True or false: a big, easy tap area is poor button design. (a) True (b) False
18. 18.True or false: buttons almost touching is poor button design. (a) True (b) False
19. 19.✏️ Why draw a wireframe before coding? (a) changes are quick (b) it runs the app (c) it saves data (d) it adds colours
20. 20.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) the last app used (c) that tab’s main screen (d) a random page
21. 21.Which of these is true of a wireframe? (a) uses the final pictures (b) shows the real fonts (c) has the real colours (d) uses plain grey boxes
22. 22.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
23. 23.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True
24. 24.🔢 In a photo-post flow, which comes LAST? (a) write a caption (b) add a filter (c) open the camera screen (d) post the photo
25. 25.Which colour pair is easy to read? (a) dark blue on black (b) pale pink on white (c) dark blue on white (d) light grey on white
26. 26.🎨 Fewer taps to finish a task usually means ___. (a) worse UX (b) a bigger app (c) better UX (d) more colours
27. 27.🔢 In a food-order flow, what comes right after “pay for the order”? (a) pick a dish (b) check the cart (c) track the order (d) add it to the cart
28. 28.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) so each step is clear (d) to hide the buttons
29. 29.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) in the cloud (b) on the phone
30. 30.True or false: the theme colours is about UI (the look). (a) True (b) False
31. 31.♿ 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
32. 32.🔢 In a food-order flow, which comes first: “pay for the order” or “add it to the cart”? (a) pay for the order (b) add it to the cart
33. 33.🧭 Which part of navigation hides extra links? (a) the back button (b) a tab bar (c) a menu button
34. 34.🔢 In a photo-post flow, what comes right after “take the photo”? (a) open the camera screen (b) write a caption (c) post the photo (d) add a filter
35. 35.🔢 In a food-order flow, which comes first: “track the order” or “pick a dish”? (a) pick a dish (b) track the order
36. 36.🖼️ How many parts (boxes) does this wireframe have?
    [ tab bar ]
    [ list of items ]
    [ title text ]
    [ Save button ]
    [ menu icon ]
    [ Add button ]
37. 37.Which of these is about UX (the experience)? (a) the screen layout (b) the icon shapes (c) how many taps it takes (d) the button colours
38. 38.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) in the cloud (b) on the phone
39. 39.💾 What number does this code show?
    let songs = ["Kites", "Rain", "Stars"];
    songs.push("Sunrise");
    show(songs.length);
40. 40.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. open “Friend list”
    3. tap Back
    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