App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 265 · 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. How many of these buttons follow the rule?
   Back button: 32 px tall
   Help button: 44 px tall
   Send button: 60 px tall
   Start button: 56 px tall
2. 2.🧭 What does the back button usually do? (a) closes all apps (b) deletes the page (c) goes to the last screen (d) opens settings
3. 3.🔢 In a photo-post flow, what comes right after “add a filter”? (a) write a caption (b) take the photo (c) post the photo (d) open the camera screen
4. 4.Which of these makes the app harder to use? (a) captions on videos (b) big touch targets (c) fast-flashing lights (d) labels on every icon
5. 5.🔢 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) enter the code sent
6. 6.🔢 In a photo-post flow, which comes first: “open the camera screen” or “take the photo”? (a) take the photo (b) open the camera screen
7. 7.True or false: a final design uses plain grey boxes. (a) False (b) True
8. 8.✏️ Why draw a wireframe before coding? (a) it runs the app (b) changes are quick (c) it saves data (d) it adds colours
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Menu → Cart
   Design B: Home → Offers → Pay → Menu → Address → Confirm → Results
10. 10.True or false: how fast a task is done is about UX (the experience). (a) False (b) True
11. 11.Which of these is about UX (the experience)? (a) the font size (b) the theme colours (c) the button colours (d) how fast a task is done
12. 12.💾 What number does this code show?
    let notes = ["Art", "Sports"];
    notes.push("Science");
    notes.push("Hindi");
    show(notes.length);
13. 13.🖼️ In this wireframe (top to bottom), what is right above the Save button?
    [ filter buttons ]
    [ list of items ]
    [ Save button ]
    [ search box ] (a) list of items (b) filter buttons (c) search box
14. 14.Which of these is about UX (the experience)? (a) the font size (b) the button colours (c) the theme colours (d) whether users get lost
15. 15.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Results → Item → Confirm → Search → Address → Shop
    Design B: Home → Confirm → Search → Results (a) Design A (b) Design B
16. 16.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
17. 17.🧭 Why should every screen show where you are? (a) to hide the menu (b) to use more battery (c) to look busy (d) so users do not get lost
18. 18.✏️ What is a wireframe? (a) a simple screen sketch (b) the finished app (c) a type of password (d) a charging cable
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 14 px
    Label: 22 px
    Caption: 10 px
20. 20.Which of these is true of a final design? (a) shows where things go (b) looks like the real app (c) uses plain grey boxes (d) is a quick sketch
21. 21.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) you send a message (c) the phone is lost (d) the app is closed
22. 22.True or false: space between buttons is good button design. (a) False (b) True
23. 23.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Help page”
    3. tap Back
    How many times must you tap Back to reach the main screen of this tab?
24. 24.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. open “Badges”
    3. tap the Quiz tab
    4. tap the Lessons tab
    Which screen are you on now? (a) Quiz (b) Badges (c) Lessons (d) Me
25. 25.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) in the cloud (b) on the phone
26. 26.Which of these is true of a tab bar? (a) hides extra links (b) goes to the last screen (c) shows 3 to 5 icons (d) undoes one move
27. 27.💾 What is a variable? (a) a type of screen (b) a phone setting (c) a picture (d) a named box for a value
28. 28.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. open “Video”
    3. tap the Feed tab
    4. open “Map”
    5. open “Help page”
    Which screen are you on now? (a) Feed (b) Map (c) Video (d) Help page
29. 29.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Confirm → Item → Search → Offers
    Design B: Home → Address → Results → Item → Menu → Confirm
30. 30.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 60 px tall
    Next button: 48 px tall
    Back button: 60 px tall
    Cancel button: 40 px tall (a) Save (b) Back (c) Next (d) Cancel
31. 31.True or false: a big, easy tap area is good button design. (a) False (b) True
32. 32.Which of these is true of the back button? (a) shows 3 to 5 icons (b) goes to the last screen (c) switches main sections (d) sits at the bottom
33. 33.🔍 Which is the odd one out? (a) the screen layout (b) how many taps it takes (c) the theme colours (d) the icon shapes
34. 34.🎨 Is this about UI or UX: the font size? (a) UI (b) UX
35. 35.True or false: a wireframe looks like the real app. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) icons with no labels (b) captions on videos (c) text that can grow (d) strong colour contrast
37. 37.💾 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
38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 56 px tall
    Done button: 64 px tall
    Save button: 60 px tall
    Cancel button: 48 px tall
39. 39.🔍 Which is the odd one out? (a) tiny tap areas (b) text that can grow (c) sudden loud sounds (d) icons with no labels
40. 40.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False

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