App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 112 · 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 wireframe? (a) a simple screen sketch (b) a type of password (c) the finished app (d) a charging cable
2. 2.True or false: the screen layout is about UX (the experience). (a) True (b) False
3. 3.Which colour pair is hard to read? (a) yellow on white (b) black on pale grey (c) black on yellow (d) white on dark green
4. 4.💾 Saving data in the cloud lets you ___. (a) skip the internet (b) never need a password (c) shrink the app (d) use it on any device
5. 5.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
6. 6.🖼️ In this wireframe (top to bottom), what is right below the search box?
   [ search box ]
   [ Add button ]
   [ list of items ]
   [ filter buttons ] (a) list of items (b) filter buttons (c) Add button
7. 7.💾 What is a variable? (a) a type of screen (b) a phone setting (c) a picture (d) a named box for a value
8. 8.✏️ A box with a cross in a wireframe usually means ___. (a) a picture goes here (b) delete this (c) an error (d) a closed app
9. 9.💾 What does this code show? (Positions start at 0.)
   let notes = ["Art", "Sports", "Maths", "Music", "Hindi"];
   show(notes[0]); (a) Art (b) Maths (c) Music (d) Sports
10. 10.True or false: your last game level fits saving on the phone. (a) True (b) False
11. 11.💾 What number does this code show?
    let notes = ["Maths", "Art", "Music", "Sports"];
    notes.push("Science");
    notes.push("Hindi");
    show(notes.length);
12. 12.True or false: “captions on videos” helps everyone use the app. (a) False (b) True
13. 13.True or false: the sound on/off setting fits saving on the phone. (a) False (b) True
14. 14.🧭 What does the back button usually do? (a) closes all apps (b) goes to the last screen (c) deletes the page (d) opens settings
15. 15.🎨 A beautiful app that confuses everyone has ___. (a) perfect UX (b) no UI at all (c) good UI but poor UX (d) good UX but poor UI
16. 16.🔘 Our rule: buttons are at least 48 px tall. The Save button is 32 px tall. How many px taller must it be?
17. 17.🎨 Is this about UI or UX: the theme colours? (a) UI (b) UX
18. 18.Which of these is about UI (the look)? (a) the theme colours (b) how easy sign-up is (c) whether users get lost (d) how fast a task is done
19. 19.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. tap Back
    3. open “Map”
    4. tap the Profile tab
    5. open “Score card”
    Which screen are you on now? (a) Map (b) Home (c) Search (d) Score card
20. 20.🔢 In a sign-up flow, which comes FIRST? (a) make a password (b) open the app (c) see the home screen (d) tap “Sign up”
21. 21.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
22. 22.🔢 In a sign-up flow, which comes LAST? (a) enter the code sent (b) make a password (c) tap “Sign up” (d) see the home screen
23. 23.Which of these fits saving on the phone? (a) chat messages to friends (b) notes to read offline (c) a shared to-do list (d) photos on two devices
24. 24.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) everyone (d) nobody
25. 25.Which of these is true of a wireframe? (a) has the real colours (b) shows the real fonts (c) shows where things go (d) looks like the real app
26. 26.🖼️ In this wireframe (top to bottom), what is right above the list of items?
    [ Save button ]
    [ title text ]
    [ search box ]
    [ list of items ]
    [ top bar ] (a) top bar (b) title text (c) Save button (d) search box
27. 27.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) on the phone (b) in the cloud
28. 28.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 13 px
    Body text: 21 px
    Hint: 24 px
    Label: 21 px
    Footer: 15 px
29. 29.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) colour-blind users (d) fast typists
30. 30.🔢 In a quiz-app flow, which comes first: “tap “Start quiz”” or “see the final score”? (a) tap “Start quiz” (b) see the final score
31. 31.🔍 Which is the odd one out? (a) fast-flashing lights (b) colour as the only clue (c) sudden loud sounds (d) text that can grow
32. 32.Which of these fits saving in the cloud? (a) a draft you are typing (b) the sound on/off setting (c) notes to read offline (d) chat messages to friends
33. 33.🧭 Where is a tab bar usually placed in a phone app? (a) nowhere (b) in the middle (c) at the bottom (d) inside a button
34. 34.True or false: a shared to-do list fits saving on the phone. (a) True (b) False
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.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Size
    Design B: Home → Pay → Shop → Size → Results → Cart (a) Design A (b) Design B
37. 37.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
38. 38.Which of these makes the app harder to use? (a) colour as the only clue (b) strong colour contrast (c) text that can grow (d) big touch targets
39. 39.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
40. 40.Which of these is true of a wireframe? (a) shows the real fonts (b) uses plain grey boxes (c) has the real colours (d) uses the final pictures

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