App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 642 · 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.🔢 In a sign-up flow, which comes first: “see the home screen” or “tap “Sign up””? (a) tap “Sign up” (b) see the home screen
2. 2.🔀 In a good flow, each screen should lead to ___. (a) a random page (b) a clear next step (c) a dead end (d) the same screen
3. 3.💾 What number does this code show?
   let stars = 3;
   stars = stars - 3;
   stars = stars + 4;
   show(stars);
4. 4.🔀 A screen with no way forward or back is called a ___. (a) home screen (b) shortcut (c) dead end (d) tab bar
5. 5.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) post the photo (b) write a caption (c) take the photo (d) add a filter
6. 6.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) text that can grow (d) sudden loud sounds
7. 7.💾 What does this code show? (Positions start at 0.)
   let notes = ["Art", "Music", "Maths", "Science"];
   show(notes[3]); (a) Art (b) Maths (c) Science (d) Music
8. 8.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Friend list”
   2. tap Back
   3. tap the Me tab
   4. open “Friend list”
   How many times must you tap Back to reach the main screen of this tab?
9. 9.🔢 In a sign-up flow, which comes FIRST? (a) enter the code sent (b) make a password (c) tap “Sign up” (d) open the app
10. 10.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Results → Address → Search → Confirm → Pens
    Design B: Home → Results → Cart → Item → Address → Search → Pens (a) Design B (b) Design A
11. 11.Which colour pair is easy to read? (a) black on yellow (b) pale pink on white (c) red on green (d) dark blue on black
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.🔢 In a photo-post flow, which comes first: “take the photo” or “post the photo”? (a) post the photo (b) take the photo
14. 14.Which of these makes the app harder to use? (a) fast-flashing lights (b) big touch targets (c) labels on every icon (d) strong colour contrast
15. 15.✏️ Is this true of a wireframe or of a final design: shows the real fonts? (a) a final design (b) a wireframe
16. 16.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ list of items ]
    [ filter buttons ]
    [ tab bar ]
    [ Add button ]
    [ Save button ] (a) filter buttons (b) tab bar (c) list of items (d) Add button
17. 17.🔍 Which is the odd one out? (a) labels on every icon (b) big touch targets (c) captions on videos (d) fast-flashing lights
18. 18.🔢 In a photo-post flow, which comes LAST? (a) write a caption (b) add a filter (c) take the photo (d) post the photo
19. 19.True or false: icons with no meaning is good button design. (a) False (b) True
20. 20.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 28 px tall. How many px taller must it be?
21. 21.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Score card”
    2. tap the Settings tab
    3. open “Match report”
    Which screen are you on now? (a) Chat (b) Score card (c) Feed (d) Match report
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 23 px
    Footer: 16 px
    Body text: 28 px
    Hint: 11 px
    Menu: 18 px (a) Body text (b) Label (c) Hint (d) Footer
23. 23.♿ Accessibility means an app works for ___. (a) only experts (b) everyone (c) only the coder (d) nobody
24. 24.🧭 Which part of navigation hides extra links? (a) the back button (b) a menu button (c) a tab bar
25. 25.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 36 px tall
    Next button: 52 px tall
    Send button: 64 px tall
    Start button: 48 px tall
26. 26.🖼️ In this wireframe (top to bottom), what is right below the Save button?
    [ list of items ]
    [ search box ]
    [ title text ]
    [ Save button ]
    [ big picture ] (a) search box (b) big picture (c) title text (d) list of items
27. 27.✏️ Why draw a wireframe before coding? (a) changes are quick (b) it adds colours (c) it runs the app (d) it saves data
28. 28.🔀 Why plan the user flow before building? (a) to hide the buttons (b) so each step is clear (c) to add more taps (d) to skip testing
29. 29.Which of these fits saving on the phone? (a) your last game level (b) chat messages to friends (c) a shared to-do list (d) a class leaderboard
30. 30.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
31. 31.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
32. 32.🔍 Which is the odd one out? (a) the screen layout (b) the font size (c) how easy sign-up is (d) the icon shapes
33. 33.💾 What number does this code show?
    let friends = ["Meera", "Riya", "Kabir"];
    friends.push("Zoya");
    friends.push("Arjun");
    show(friends.length);
34. 34.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 12 px
    Caption: 15 px
    Menu: 14 px
    Label: 10 px
    Footer: 21 px
35. 35.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Pay → Pens → Confirm
    Design B: Home → Pay → Cart
36. 36.Which of these helps everyone use the app? (a) tiny tap areas (b) sudden loud sounds (c) labels on every icon (d) colour as the only clue
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 14 px
    Menu: 12 px
    Body text: 22 px
    Footer: 15 px
38. 38.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap Back
    3. tap the Chat tab
    4. tap the Settings tab
    Which screen are you on now? (a) Chat (b) Feed (c) Settings (d) Map
39. 39.Which of these makes the app harder to use? (a) big touch targets (b) colour as the only clue (c) strong colour contrast (d) labels on every icon
40. 40.🔢 In a photo-post flow, what comes right after “write a caption”? (a) take the photo (b) post the photo (c) add a filter (d) open the camera screen

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