App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 23 · 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.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) a class leaderboard (d) your last game level
2. 2.🧭 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
3. 3.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
4. 4.True or false: a wireframe uses the final pictures. (a) True (b) False
5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Match report”
   2. open “Help page”
   3. tap Back
   Which screen are you on now? (a) Lessons (b) Quiz (c) Help page (d) Match report
6. 6.🎨 Is this about UI or UX: how many taps it takes? (a) UX (b) UI
7. 7.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Start button: 64 px tall
   Send button: 32 px tall
   Back button: 64 px tall
   Done button: 52 px tall (a) Send (b) Done (c) Back (d) Start
8. 8.🔀 What is a user flow? (a) a type of font (b) a charging cable (c) the path through screens (d) a colour theme
9. 9.True or false: a final design has the real colours. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) whether users get lost (b) the icon shapes (c) the font size (d) the screen layout
11. 11.Which of these makes the app harder to use? (a) icons with no labels (b) captions on videos (c) strong colour contrast (d) big touch targets
12. 12.🔢 In a quiz-app flow, what comes right after “read a question”? (a) pick an answer (b) see if it is right (c) tap “Start quiz” (d) see the final score
13. 13.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Confirm → Results → Size
    Design B: Home → Results → Size
14. 14.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 28 px tall
    Save button: 64 px tall
    Start button: 64 px tall
    Cancel button: 48 px tall (a) Next (b) Start (c) Save (d) Cancel
15. 15.✏️ What is a wireframe? (a) a type of password (b) the finished app (c) a simple screen sketch (d) a charging cable
16. 16.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. tap the Home tab
    3. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
17. 17.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) colour as the only clue (d) captions on videos
18. 18.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ menu icon ]
    [ filter buttons ]
    [ Add button ]
    [ Save button ]
    [ top bar ] (a) Save button (b) top bar (c) filter buttons (d) Add button
19. 19.Which of these is about UI (the look)? (a) how many taps it takes (b) how easy sign-up is (c) how fast a task is done (d) the button colours
20. 20.🖼️ In this wireframe (top to bottom), what is right below the list of items?
    [ list of items ]
    [ Save button ]
    [ filter buttons ]
    [ Add button ]
    [ top bar ] (a) Save button (b) Add button (c) filter buttons (d) top bar
21. 21.💾 What is a variable? (a) a named box for a value (b) a type of screen (c) a picture (d) a phone setting
22. 22.🔘 Our rule: buttons are at least 48 px tall. The Start button is 36 px tall. How many px taller must it be?
23. 23.🔍 Which is the odd one out? (a) how users feel after (b) how many taps it takes (c) the icon shapes (d) how fast a task is done
24. 24.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Size → Search → Menu → Pens
    Design B: Home → Results → Offers → Pens → Size → Shop → Confirm (a) Design A (b) Design B
25. 25.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 19 px
    Menu: 10 px
    Footer: 21 px
26. 26.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
27. 27.💾 What number does this code show?
    let songs = ["Kites", "Stars", "Rain"];
    songs.push("Ocean");
    songs.push("Sunrise");
    show(songs.length);
28. 28.True or false: a shared to-do list fits saving in the cloud. (a) False (b) True
29. 29.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. tap the Home tab
    3. tap the Search tab
    4. open “Friend list”
    5. open “Match report”
    Which screen are you on now? (a) Badges (b) Match report (c) Friend list (d) Home
30. 30.💾 Which works with no internet at all? (a) a cloud leaderboard (b) a shared chat (c) a cloud backup (d) data saved on the phone
31. 31.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) on the phone (b) in the cloud
32. 32.🔢 In a food-order flow, which comes FIRST? (a) pay for the order (b) open the menu (c) pick a dish (d) add it to the cart
33. 33.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. tap the Lessons tab
    3. open “Video”
    How many times must you tap Back to reach the main screen of this tab?
34. 34.Which colour pair is easy to read? (a) black on pale grey (b) yellow on white (c) red on green (d) light grey on white
35. 35.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a final design (b) a wireframe
36. 36.True or false: a clear word like Save is good button design. (a) True (b) False
37. 37.🧭 Which part of navigation switches main sections? (a) the back button (b) a menu button (c) a tab bar
38. 38.💾 In most code, the first item of a list is at position ___. (a) 1 (b) 0 (c) 10 (d) 2
39. 39.💾 pop() takes off the last item. What does this code show?
    let friends = ["Arjun", "Kabir", "Aman", "Meera"];
    friends.pop();
    show(friends[friends.length - 1]); (a) Kabir (b) Meera (c) Aman (d) Arjun
40. 40.🎨 A beautiful app that confuses everyone has ___. (a) good UI but poor UX (b) no UI at all (c) good UX but poor UI (d) perfect UX

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