App Dev Worksheet: Part 2 Test

App development lesson 16: Designing apps: Part 2 test · Set 207 · 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 does the back button usually do? (a) deletes the page (b) opens settings (c) closes all apps (d) goes to the last screen
2. 2.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. open “Friend list”
   2. open “Friend list”
   3. tap Back
   4. tap Back
   How many times must you tap Back to reach the main screen of this tab?
3. 3.🔢 In a photo-post flow, what comes right after “open the camera screen”? (a) take the photo (b) add a filter (c) write a caption (d) post the photo
4. 4.True or false: a wireframe has no real colours. (a) False (b) True
5. 5.True or false: the font size is about UX (the experience). (a) False (b) True
6. 6.💾 pop() takes off the last item. What does this code show?
   let notes = ["Hindi", "Science", "Sports", "Maths"];
   notes.pop();
   show(notes[notes.length - 1]); (a) Hindi (b) Sports (c) Science (d) Maths
7. 7.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
   1. open “Match report”
   2. open “Score card”
   3. tap the Chat tab
   4. open “Match report”
   5. tap the Settings tab
   How many times must you tap Back to reach the main screen of this tab?
8. 8.🔘 Our rule: buttons are at least 48 px tall. The Back button is 32 px tall. How many px taller must it be?
9. 9.🔢 In a food-order flow, which comes LAST? (a) add it to the cart (b) pick a dish (c) track the order (d) open the menu
10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 40 px tall
    Start button: 44 px tall
    Save button: 32 px tall
11. 11.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
12. 12.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Results → Pens → Pay → Shop → Offers
    Design B: Home → Pens → Confirm → Size → Shop → Pay → Address
13. 13.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Map”
    2. tap the Search tab
    3. tap the Search tab
    4. open “Map”
    Which screen are you on now? (a) Profile (b) Home (c) Map (d) Search
14. 14.💾 Which works with no internet at all? (a) a cloud backup (b) a cloud leaderboard (c) data saved on the phone (d) a shared chat
15. 15.🔀 What is a user flow? (a) a type of font (b) the path through screens (c) a charging cable (d) a colour theme
16. 16.🔀 Why plan the user flow before building? (a) to hide the buttons (b) to add more taps (c) so each step is clear (d) to skip testing
17. 17.✏️ What is a wireframe? (a) the finished app (b) a charging cable (c) a simple screen sketch (d) a type of password
18. 18.🔍 Which is the odd one out? (a) how users feel after (b) the font size (c) how many taps it takes (d) how easy sign-up is
19. 19.💾 What number does this code show?
    let notes = ["Music", "Maths", "Sports"];
    notes.push("Hindi");
    show(notes.length);
20. 20.💾 pop() takes off the last item. What does this code show?
    let songs = ["Stars", "Monsoon", "Ocean"];
    songs.pop();
    show(songs[songs.length - 1]); (a) Ocean (b) Monsoon (c) Stars
21. 21.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
22. 22.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
23. 23.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Size → Shop
    Design B: Home → Search → Address → Pens → Pay → Menu (a) Design B (b) Design A
24. 24.True or false: a big, easy tap area is poor button design. (a) False (b) True
25. 25.Which of these makes the app harder to use? (a) labels on every icon (b) fast-flashing lights (c) strong colour contrast (d) captions on videos
26. 26.✏️ A box with a cross in a wireframe usually means ___. (a) delete this (b) an error (c) a closed app (d) a picture goes here
27. 27.🧭 Which part of navigation shows 3 to 5 icons? (a) a menu button (b) a tab bar (c) the back button
28. 28.Which colour pair is hard to read? (a) white on black (b) white on dark green (c) dark blue on white (d) dark blue on black
29. 29.💾 Where should the app save chat messages to friends: on the phone or in the cloud? (a) on the phone (b) in the cloud
30. 30.🔢 In a sign-up flow, which comes first: “type name and email” or “open the app”? (a) type name and email (b) open the app
31. 31.🔢 In a sign-up flow, what comes right after “open the app”? (a) type name and email (b) tap “Sign up” (c) make a password (d) see the home screen
32. 32.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. open “Match report”
    3. tap Back
    4. tap Back
    5. open “Map”
    Which screen are you on now? (a) Match report (b) Map (c) Edit photo (d) Lessons
33. 33.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Badges”
    2. tap the Settings tab
    3. tap the Feed tab
    4. open “Edit photo”
    5. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
34. 34.🔘 Our rule: buttons are at least 48 px tall. The Start button is 44 px tall. How many px taller must it be?
35. 35.💾 pop() takes off the last item. What does this code show?
    let notes = ["Hindi", "Sports", "Music", "Science", "Art"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Music (b) Sports (c) Hindi (d) Science
36. 36.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
37. 37.🔢 In a food-order flow, which comes first: “add it to the cart” or “open the menu”? (a) open the menu (b) add it to the cart
38. 38.💾 What does this code show? (Positions start at 0.)
    let notes = ["Music", "Art", "Maths"];
    show(notes[1]); (a) Art (b) Maths (c) Music
39. 39.True or false: the icon shapes is about UI (the look). (a) True (b) False
40. 40.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 40 px tall
    Done button: 32 px tall
    Help button: 44 px tall
    Save button: 60 px tall

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