App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 8 · 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: how fast a task is done is about UI (the look). (a) False (b) True
2. 2.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) everyone (d) nobody
3. 3.True or false: a final design has no real colours. (a) False (b) True
4. 4.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Friend list”
   2. tap Back
   3. open “Match report”
   4. open “Edit photo”
   Which screen are you on now? (a) Friend list (b) Match report (c) Edit photo (d) Home
5. 5.🔢 In a food-order flow, what comes right after “pay for the order”? (a) check the cart (b) add it to the cart (c) open the menu (d) track the order
6. 6.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) see the final score (b) read a question (c) see if it is right (d) pick an answer
7. 7.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) pay for the order (c) track the order (d) open the menu
8. 8.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. tap the Feed tab
   2. open “Edit photo”
   3. open “Match report”
   How many times must you tap Back to reach the main screen of this tab?
9. 9.Which of these is true of a tab bar? (a) hides extra links (b) undoes one move (c) shows 3 to 5 icons (d) goes to the last screen
10. 10.🧭 Where is a tab bar usually placed in a phone app? (a) in the middle (b) inside a button (c) at the bottom (d) nowhere
11. 11.Which of these is true of a menu button? (a) sits at the bottom (b) goes to the last screen (c) opens a list of pages (d) switches main sections
12. 12.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
13. 13.🧭 What does the back button usually do? (a) goes to the last screen (b) deletes the page (c) closes all apps (d) opens settings
14. 14.🎨 UI stands for user ___. (a) internet (b) idea (c) input (d) interface
15. 15.Which of these is about UX (the experience)? (a) the icon shapes (b) the button colours (c) the screen layout (d) whether users get lost
16. 16.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
17. 17.🎨 UX stands for user ___. (a) express (b) extra (c) example (d) experience
18. 18.True or false: the sound on/off setting fits saving on the phone. (a) False (b) True
19. 19.💾 What does this code show? (Positions start at 0.)
    let friends = ["Arjun", "Zoya", "Kabir", "Aman", "Riya"];
    show(friends[0]); (a) Aman (b) Zoya (c) Kabir (d) Arjun
20. 20.Which colour pair is easy to read? (a) yellow on white (b) pale pink on white (c) red on green (d) black on pale grey
21. 21.🎨 Is this about UI or UX: the icon shapes? (a) UI (b) UX
22. 22.🔢 In a photo-post flow, what comes right after “take the photo”? (a) open the camera screen (b) post the photo (c) add a filter (d) write a caption
23. 23.True or false: photos on two devices fits saving in the cloud. (a) False (b) True
24. 24.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
25. 25.🖼️ In this wireframe (top to bottom), what is right below the list of items?
    [ search box ]
    [ list of items ]
    [ Save button ]
    [ title text ] (a) search box (b) Save button (c) title text
26. 26.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a wireframe (b) a final design
27. 27.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
28. 28.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 40 px tall
    Back button: 56 px tall
    Start button: 32 px tall
    Next button: 60 px tall
29. 29.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap Back
    3. open “Map”
    Which screen are you on now? (a) Search (b) Home (c) Help page (d) Map
30. 30.True or false: buttons almost touching is poor button design. (a) True (b) False
31. 31.✏️ What is a wireframe? (a) a type of password (b) a simple screen sketch (c) the finished app (d) a charging cable
32. 32.True or false: a final design looks like the real app. (a) True (b) False
33. 33.Which of these is true of the back button? (a) undoes one move (b) sits at the bottom (c) shows 3 to 5 icons (d) opens a list of pages
34. 34.🔢 In a quiz-app flow, what comes right after “see if it is right”? (a) pick an answer (b) tap “Start quiz” (c) see the final score (d) read a question
35. 35.Which colour pair is easy to read? (a) light grey on white (b) black on yellow (c) pale pink on white (d) dark blue on black
36. 36.🔘 Our rule: buttons are at least 48 px tall. The Back button is 32 px tall. How many px taller must it be?
37. 37.♿ What does a screen reader do? (a) makes text tiny (b) takes photos (c) plays music (d) reads the screen aloud
38. 38.🔢 In a food-order flow, which comes first: “track the order” or “check the cart”? (a) check the cart (b) track the order
39. 39.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
40. 40.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Pay
    Design B: Home → Menu → Confirm → Address

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