App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 349 · 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.🧭 Why should every screen show where you are? (a) to hide the menu (b) so users do not get lost (c) to look busy (d) to use more battery
2. 2.🔢 In a food-order flow, which comes first: “add it to the cart” or “pay for the order”? (a) add it to the cart (b) pay for the order
3. 3.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a final design (b) a wireframe
4. 4.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
5. 5.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) on the phone (b) in the cloud
6. 6.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) takes photos (d) reads the screen aloud
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Help page”
   2. tap Back
   3. tap the Feed tab
   4. open “Help page”
   How many times must you tap Back to reach the main screen of this tab?
8. 8.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
   Design A: Home → Item → Address → Offers → Confirm
   Design B: Home → Results → Shop → Search
9. 9.True or false: a big, easy tap area is good button design. (a) False (b) True
10. 10.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) tiny tap areas (d) text that can grow
11. 11.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Item → Address → Pay → Shop
    Design B: Home → Pay → Results
12. 12.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ Save button ]
    [ title text ]
    [ top bar ]
    [ tab bar ] (a) title text (b) top bar (c) tab bar (d) Save button
13. 13.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
14. 14.True or false: the icon shapes is about UX (the experience). (a) True (b) False
15. 15.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) the server (c) fast typists (d) the battery
16. 16.Which of these is about UI (the look)? (a) how easy sign-up is (b) the button colours (c) whether users get lost (d) how many taps it takes
17. 17.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
18. 18.🔀 In a good flow, each screen should lead to ___. (a) the same screen (b) a clear next step (c) a random page (d) a dead end
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 19 px
    Title: 26 px
    Hint: 10 px (a) Body text (b) Title (c) Hint
20. 20.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. tap the Settings tab
    3. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
21. 21.Which of these makes the app harder to use? (a) big touch targets (b) strong colour contrast (c) labels on every icon (d) icons with no labels
22. 22.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
23. 23.💾 What does this code show? (Positions start at 0.)
    let songs = ["Stars", "Monsoon", "Rain", "Kites", "Sunrise"];
    show(songs[3]); (a) Monsoon (b) Stars (c) Kites (d) Rain
24. 24.♿ A screen has 12 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
25. 25.Which of these is true of a tab bar? (a) hides extra links (b) goes to the last screen (c) undoes one move (d) switches main sections
26. 26.Which of these is true of a wireframe? (a) has no real colours (b) looks like the real app (c) shows the real fonts (d) has the real colours
27. 27.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
28. 28.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
29. 29.🔀 What is a user flow? (a) the path through screens (b) a type of font (c) a charging cable (d) a colour theme
30. 30.Which colour pair is hard to read? (a) black on pale grey (b) white on dark green (c) light grey on white (d) dark blue on white
31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Map”
    3. tap the Search tab
    4. tap the Profile tab
    Which screen are you on now? (a) Map (b) Search (c) Profile (d) Home
32. 32.🔢 In a photo-post flow, which comes first: “post the photo” or “open the camera screen”? (a) open the camera screen (b) post the photo
33. 33.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
34. 34.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 28 px tall. How many px taller must it be?
35. 35.🎨 Fewer taps to finish a task usually means ___. (a) better UX (b) more colours (c) worse UX (d) a bigger app
36. 36.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
37. 37.Which of these is true of the back button? (a) switches main sections (b) goes to the last screen (c) sits at the bottom (d) hides extra links
38. 38.🖼️ In this wireframe (top to bottom), what is right below the Save button?
    [ title text ]
    [ filter buttons ]
    [ tab bar ]
    [ Add button ]
    [ Save button ]
    [ menu icon ] (a) tab bar (b) menu icon (c) filter buttons (d) Add button
39. 39.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) how easy sign-up is (d) the icon shapes
40. 40.💾 Saving data in the cloud lets you ___. (a) never need a password (b) shrink the app (c) skip the internet (d) use it on any device

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