App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 998 · 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.💾 What is a variable? (a) a named box for a value (b) a picture (c) a phone setting (d) a type of screen
2. 2.✏️ What is a wireframe? (a) the finished app (b) a simple screen sketch (c) a charging cable (d) a type of password
3. 3.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Results → Search
   Design B: Home → Pens → Search → Shop
4. 4.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
   Design A: Home → Confirm → Shop → Search → Cart → Offers → Pens
   Design B: Home → Offers → Item → Cart → Confirm (a) Design B (b) Design A
5. 5.💾 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
6. 6.Which of these is about UI (the look)? (a) the button colours (b) how easy sign-up is (c) how users feel after (d) how many taps it takes
7. 7.🔢 In a photo-post flow, what comes right after “add a filter”? (a) post the photo (b) take the photo (c) write a caption (d) open the camera screen
8. 8.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Next button: 60 px tall
   Back button: 44 px tall
   Cancel button: 44 px tall
   Help button: 56 px tall
10. 10.🔀 Why plan the user flow before building? (a) to skip testing (b) to add more taps (c) to hide the buttons (d) so each step is clear
11. 11.💾 What does this code show? (Positions start at 0.)
    let friends = ["Arjun", "Aman", "Riya", "Zoya", "Kabir"];
    show(friends[2]); (a) Aman (b) Zoya (c) Arjun (d) Riya
12. 12.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
13. 13.🔍 Which is the odd one out? (a) sudden loud sounds (b) big touch targets (c) colour as the only clue (d) icons with no labels
14. 14.♿ A screen has 7 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
15. 15.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. open “Video”
    3. tap the Quiz tab
    How many times must you tap Back to reach the main screen of this tab?
16. 16.Which of these is about UX (the experience)? (a) the button colours (b) the font size (c) the screen layout (d) how easy sign-up is
17. 17.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 19 px
    Menu: 19 px
    Hint: 14 px
    Footer: 10 px
    Body text: 15 px
18. 18.True or false: whether users get lost is about UX (the experience). (a) False (b) True
19. 19.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
20. 20.Which of these is about UX (the experience)? (a) the button colours (b) the screen layout (c) how many taps it takes (d) the theme colours
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Address → Shop
    Design B: Home → Item → Pay → Menu → Search → Size
22. 22.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Search → Offers → Address
    Design B: Home → Pens → Item → Address → Menu → Shop → Offers
23. 23.🧭 What does the back button usually do? (a) closes all apps (b) deletes the page (c) opens settings (d) goes to the last screen
24. 24.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) to add colour (d) so anyone can follow
25. 25.Which of these is true of a final design? (a) shows where things go (b) has no real colours (c) looks like the real app (d) uses plain grey boxes
26. 26.Which of these fits saving in the cloud? (a) notes to read offline (b) photos on two devices (c) your last game level (d) a draft you are typing
27. 27.Which of these fits saving in the cloud? (a) your last game level (b) notes to read offline (c) a shared to-do list (d) the sound on/off setting
28. 28.Which of these is about UI (the look)? (a) how users feel after (b) how fast a task is done (c) the theme colours (d) whether users get lost
29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 60 px tall
    Start button: 44 px tall
    Back button: 60 px tall
30. 30.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ top bar ]
    [ list of items ]
    [ tab bar ]
    [ Save button ]
    [ Add button ] (a) Save button (b) top bar (c) Add button (d) tab bar
31. 31.True or false: a big, easy tap area is poor button design. (a) True (b) False
32. 32.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Badges”
    3. tap Back
    4. open “Help page”
    Which screen are you on now? (a) Help page (b) Home (c) Badges (d) Search
33. 33.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Video”
    2. tap the Search tab
    3. open “Edit photo”
    Which screen are you on now? (a) Search (b) Video (c) Edit photo (d) Home
34. 34.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Confirm → Size
    Design B: Home → Pens → Offers → Menu → Item → Confirm (a) Design B (b) Design A
35. 35.🔢 In a sign-up flow, which comes first: “type name and email” or “make a password”? (a) type name and email (b) make a password
36. 36.🔢 In a food-order flow, which comes first: “open the menu” or “pick a dish”? (a) pick a dish (b) open the menu
37. 37.🔢 In a photo-post flow, which comes FIRST? (a) post the photo (b) open the camera screen (c) write a caption (d) add a filter
38. 38.Which of these makes the app harder to use? (a) fast-flashing lights (b) big touch targets (c) strong colour contrast (d) captions on videos
39. 39.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 32 px tall
    Start button: 64 px tall
    Next button: 64 px tall (a) Next (b) Save (c) Start
40. 40.🔍 Which is the odd one out? (a) how many taps it takes (b) how users feel after (c) how fast a task is done (d) the button colours

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