App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 853 · 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.💾 pop() takes off the last item. What does this code show?
   let friends = ["Arjun", "Aman", "Zoya", "Kabir", "Meera"];
   friends.pop();
   show(friends[friends.length - 1]); (a) Aman (b) Arjun (c) Zoya (d) Kabir
2. 2.🔢 In a sign-up flow, what comes right after “enter the code sent”? (a) type name and email (b) tap “Sign up” (c) open the app (d) see the home screen
3. 3.🔍 Which is the odd one out? (a) the theme colours (b) how many taps it takes (c) the icon shapes (d) the font size
4. 4.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
5. 5.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
6. 6.💾 What number does this code show?
   let friends = ["Arjun", "Riya"];
   friends.push("Meera");
   show(friends.length);
7. 7.True or false: a wireframe uses plain grey boxes. (a) False (b) True
8. 8.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Map”
   2. open “Edit photo”
   3. tap the Profile tab
   How many times must you tap Back to reach the main screen of this tab?
9. 9.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Next button: 24 px tall
   Back button: 60 px tall
   Cancel button: 56 px tall
   Start button: 52 px tall (a) Next (b) Cancel (c) Back (d) Start
10. 10.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 10 px
    Title: 24 px
    Body text: 22 px
11. 11.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Help page”
    3. tap Back
    Which screen are you on now? (a) Help page (b) Search (c) Profile (d) Home
12. 12.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a final design (b) a wireframe
13. 13.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Size → Search → Menu → Address → Pens → Item
    Design B: Home → Address → Shop → Results → Item (a) Design B (b) Design A
14. 14.Which of these is true of a menu button? (a) shows 3 to 5 icons (b) switches main sections (c) undoes one move (d) hides extra links
15. 15.🔢 In a food-order flow, which comes FIRST? (a) check the cart (b) open the menu (c) pick a dish (d) add it to the cart
16. 16.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. tap the Lessons tab
    3. open “Edit photo”
    4. tap Back
    5. open “Help page”
    Which screen are you on now? (a) Help page (b) Edit photo (c) Lessons (d) Quiz
17. 17.🔢 In a photo-post flow, what comes right after “write a caption”? (a) take the photo (b) add a filter (c) post the photo (d) open the camera screen
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 19 px
    Menu: 11 px
    Caption: 22 px
    Title: 21 px (a) Caption (b) Title (c) Hint (d) Menu
19. 19.True or false: how many taps it takes is about UI (the look). (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) the button colours (b) whether users get lost (c) the theme colours (d) the screen layout
21. 21.Which colour pair is easy to read? (a) red on green (b) pale pink on white (c) light grey on white (d) black on yellow
22. 22.🔍 Which is the odd one out? (a) icons with no labels (b) text that can grow (c) strong colour contrast (d) captions on videos
23. 23.True or false: icons with no meaning is poor button design. (a) False (b) True
24. 24.True or false: grey text on grey is good button design. (a) True (b) False
25. 25.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
26. 26.Which of these fits saving in the cloud? (a) a shared to-do list (b) notes to read offline (c) your last game level (d) a draft you are typing
27. 27.Which colour pair is easy to read? (a) yellow on white (b) black on pale grey (c) pale pink on white (d) light grey on white
28. 28.💾 What number does this code show?
    let points = 5;
    points = points - 3;
    points = points + 5;
    show(points);
29. 29.🖼️ In this wireframe (top to bottom), what is right above the tab bar?
    [ list of items ]
    [ search box ]
    [ tab bar ]
    [ Add button ]
    [ top bar ] (a) search box (b) top bar (c) Add button (d) list of items
30. 30.True or false: a wireframe looks like the real app. (a) False (b) True
31. 31.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Confirm → Shop
    Design B: Home → Cart → Pay → Confirm → Results → Pens
32. 32.🧭 About how many tabs suit a tab bar best? (a) 20 (b) 3 to 5 (c) 10 to 12 (d) 1
33. 33.✏️ What is the easiest way to draw a first wireframe? (a) pencil and paper (b) a 3D printer (c) a microphone (d) a phone case
34. 34.🔢 In a photo-post flow, what comes right after “take the photo”? (a) open the camera screen (b) add a filter (c) post the photo (d) write a caption
35. 35.Which of these is true of a final design? (a) has no real colours (b) is a quick sketch (c) has the real colours (d) uses plain grey boxes
36. 36.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
37. 37.🧭 Which part of navigation switches main sections? (a) a menu button (b) a tab bar (c) the back button
38. 38.🌗 Is yellow on white easy or hard to read on a button? (a) easy to read (b) hard to read
39. 39.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) fast-flashing lights (d) labels on every icon
40. 40.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Results → Item → Pens → Size → Cart
    Design B: Home → Menu → Shop → Cart (a) Design A (b) Design B

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