App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 650 · 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.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) write a caption (b) take the photo (c) add a filter (d) post the photo
2. 2.🧭 What does the back button usually do? (a) deletes the page (b) goes to the last screen (c) opens settings (d) closes all apps
3. 3.Which of these is true of a final design? (a) has the real colours (b) uses plain grey boxes (c) shows where things go (d) has no real colours
4. 4.💾 What number does this code show?
   let friends = ["Arjun", "Aman", "Meera"];
   friends.push("Kabir");
   friends.push("Riya");
   show(friends.length);
5. 5.🧭 Why should every screen show where you are? (a) to use more battery (b) so users do not get lost (c) to look busy (d) to hide the menu
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 14 px
   Body text: 24 px
   Menu: 16 px
   Label: 28 px (a) Title (b) Menu (c) Body text (d) Label
7. 7.True or false: the button colours is about UX (the experience). (a) False (b) True
8. 8.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Pens → Menu → Results → Pay
   Design B: Home → Menu → Confirm
9. 9.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Pay → Menu
   Design B: Home → Results → Shop → Pay → Offers
10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 56 px tall
    Back button: 40 px tall
    Save button: 44 px tall
11. 11.Which of these is true of a tab bar? (a) opens a list of pages (b) switches main sections (c) undoes one move (d) hides extra links
12. 12.Which of these is true of the back button? (a) sits at the bottom (b) hides extra links (c) goes to the last screen (d) switches main sections
13. 13.🎨 UI stands for user ___. (a) input (b) interface (c) idea (d) internet
14. 14.✏️ What is the easiest way to draw a first wireframe? (a) a 3D printer (b) a phone case (c) a microphone (d) pencil and paper
15. 15.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
16. 16.💾 What number does this code show?
    let friends = ["Riya", "Kabir", "Arjun", "Meera"];
    friends.push("Zoya");
    show(friends.length);
17. 17.🔍 Which is the odd one out? (a) how easy sign-up is (b) how fast a task is done (c) how many taps it takes (d) the font size
18. 18.🔢 In a quiz-app flow, which comes FIRST? (a) tap “Start quiz” (b) see the final score (c) see if it is right (d) pick an answer
19. 19.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
20. 20.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) read a question (b) see if it is right (c) pick an answer (d) see the final score
21. 21.Which of these is true of a tab bar? (a) opens a list of pages (b) goes to the last screen (c) undoes one move (d) sits at the bottom
22. 22.Which of these is true of the back button? (a) hides extra links (b) sits at the bottom (c) undoes one move (d) shows 3 to 5 icons
23. 23.🌗 Is dark blue on black easy or hard to read on a button? (a) easy to read (b) hard to read
24. 24.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a final design (b) a wireframe
25. 25.🔀 Why plan the user flow before building? (a) to add more taps (b) to skip testing (c) so each step is clear (d) to hide the buttons
26. 26.🎨 Is this about UI or UX: how fast a task is done? (a) UX (b) UI
27. 27.Which colour pair is hard to read? (a) black on pale grey (b) white on black (c) black on yellow (d) red on green
28. 28.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. tap Back
    3. open “Help page”
    Which screen are you on now? (a) Search (b) Badges (c) Help page (d) Home
29. 29.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
30. 30.🎨 Is this about UI or UX: the screen layout? (a) UI (b) UX
31. 31.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) read a question (b) tap “Start quiz” (c) see the final score (d) see if it is right
32. 32.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Me tab
    2. open “Video”
    3. tap Back
    4. open “Friend list”
    5. open “Badges”
    How many times must you tap Back to reach the main screen of this tab?
33. 33.Which of these fits saving in the cloud? (a) notes to read offline (b) the sound on/off setting (c) chat messages to friends (d) a draft you are typing
34. 34.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Video”
    2. tap the Me tab
    3. tap the Quiz tab
    4. open “Friend list”
    5. tap Back
    Which screen are you on now? (a) Quiz (b) Video (c) Friend list (d) Lessons
35. 35.True or false: a tiny 20 px button is poor button design. (a) True (b) False
36. 36.🔘 Our rule: buttons are at least 48 px tall. The Help button is 40 px tall. How many px taller must it be?
37. 37.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Pens → Shop → Size → Menu → Confirm
    Design B: Home → Menu → Confirm → Results → Search (a) Design A (b) Design B
38. 38.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
39. 39.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
40. 40.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Confirm → Offers → Search → Pens → Results
    Design B: Home → Menu → Offers → Size → Confirm → Pens → Search

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