App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 903 · 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.True or false: photos on two devices fits saving in the cloud. (a) True (b) False
2. 2.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
3. 3.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) strong colour contrast (d) fast-flashing lights
4. 4.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Feed tab
   2. open “Edit photo”
   3. open “Help page”
   Which screen are you on now? (a) Feed (b) Edit photo (c) Chat (d) Help page
5. 5.✏️ Why draw a wireframe before coding? (a) it adds colours (b) changes are quick (c) it saves data (d) it runs the app
6. 6.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Profile tab
   2. tap the Home tab
   3. tap the Home tab
   Which screen are you on now? (a) Profile (b) Search (c) Home
7. 7.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) the app is closed (c) you send a message (d) the phone is lost
8. 8.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) in the cloud (b) on the phone
9. 9.Which colour pair is easy to read? (a) light grey on white (b) yellow on white (c) black on pale grey (d) dark blue on black
10. 10.🎨 Who should you test the UX with? (a) nobody (b) real users (c) the app icon (d) only yourself
11. 11.💾 What number does this code show?
    let points = 3;
    points = points - 1;
    points = points + 2;
    show(points);
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 72 px tall
    Start button: 36 px tall
    Back button: 52 px tall (a) Back (b) Send (c) Start
13. 13.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) colour as the only clue (d) text that can grow
14. 14.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Offers → Size
    Design B: Home → Shop → Pens → Search → Cart (a) Design B (b) Design A
15. 15.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. tap Back
    3. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
16. 16.Which of these is true of a final design? (a) shows where things go (b) uses plain grey boxes (c) uses the final pictures (d) has no real colours
17. 17.♿ Why add captions to videos? (a) so anyone can follow (b) to slow them down (c) to add colour (d) to hide the sound
18. 18.💾 Which works with no internet at all? (a) data saved on the phone (b) a cloud backup (c) a cloud leaderboard (d) a shared chat
19. 19.True or false: the sound on/off setting fits saving on the phone. (a) False (b) True
20. 20.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 52 px tall
    Cancel button: 72 px tall
    Next button: 28 px tall
    Save button: 60 px tall (a) Start (b) Next (c) Save (d) Cancel
21. 21.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Item → Search → Menu → Shop → Confirm
    Design B: Home → Results → Search → Pens → Cart
22. 22.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ list of items ]
    [ search box ]
    [ filter buttons ]
    [ tab bar ]
    [ title text ] (a) tab bar (b) filter buttons (c) list of items (d) title text
23. 23.True or false: a final design shows where things go. (a) True (b) False
24. 24.Which of these makes the app harder to use? (a) strong colour contrast (b) labels on every icon (c) sudden loud sounds (d) text that can grow
25. 25.🔍 Which is the odd one out? (a) fast-flashing lights (b) sudden loud sounds (c) captions on videos (d) tiny tap areas
26. 26.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Map”
    2. tap Back
    3. open “Score card”
    4. tap Back
    5. open “Video”
    Which screen are you on now? (a) Video (b) Score card (c) Lessons (d) Map
27. 27.💾 What does this code show? (Positions start at 0.)
    let friends = ["Arjun", "Riya", "Zoya", "Aman"];
    show(friends[2]); (a) Zoya (b) Arjun (c) Aman (d) Riya
28. 28.🔍 Which is the odd one out? (a) sudden loud sounds (b) colour as the only clue (c) strong colour contrast (d) tiny tap areas
29. 29.Which of these is true of a final design? (a) shows where things go (b) is a quick sketch (c) uses plain grey boxes (d) has the real colours
30. 30.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap Back
    3. open “Friend list”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
31. 31.Which colour pair is hard to read? (a) white on dark green (b) black on yellow (c) red on green (d) black on pale grey
32. 32.True or false: a shared to-do list fits saving on the phone. (a) True (b) False
33. 33.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
34. 34.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
35. 35.🧭 Tapping a tab usually takes you to ___. (a) the phone settings (b) a random page (c) that tab’s main screen (d) the last app used
36. 36.🧭 Which part of navigation sits at the bottom? (a) the back button (b) a tab bar (c) a menu button
37. 37.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) in the cloud (b) on the phone
38. 38.🖼️ How many parts (boxes) does this wireframe have?
    [ big picture ]
    [ tab bar ]
    [ top bar ]
    [ Add button ]
    [ list of items ]
    [ search box ]
39. 39.True or false: a wireframe has the real colours. (a) False (b) True
40. 40.🔢 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

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