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App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 771 · 40 questions
TalentJR

Developer's tip (Plan, design, build, check): Find the topic: what apps are, designing apps, or logic and building. Read every screen, list or code line carefully, top to bottom. For code, write each value down step by step and check it again.

NameDateTime takenScore ___ / 40
  1. 1.🧭 Which part of navigation opens a list of pages? (a) the back button (b) a menu button (c) a tab bar
  2. 2.True or false: a bus tracker is the best fit for a student who often misses the school bus. (a) True (b) False
  3. 3.True or false: grey text on grey is poor button design. (a) False (b) True
  4. 4.🧪 How many of these test cases pass?
    🎟️ Rule: a ticket costs 50 for children under 10, and 100 for everyone else.
    function price(age) {
      if (age < 10) {
        return 50;
      }
      return 100;
    }
    Test 1: price(18) → expected 100
    Test 2: price(16) → expected 100
    Test 3: price(8) → expected 50
  5. 5.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Quiz tab
    2. open “Help page”
    3. tap the Quiz tab
    4. open “Edit photo”
    Which screen are you on now?     (a) Help page (b) Edit photo (c) Lessons (d) Quiz
  6. 6.🔀 A screen with no way forward or back is called a ___. (a) tab bar (b) home screen (c) shortcut (d) dead end
  7. 7.🧪 How many of these test cases pass?
    🎟️ Rule: a ticket costs 50 for children under 14, and 100 for everyone else.
    function price(age) {
      if (age <= 14) {
        return 50;
      }
      return 100;
    }
    Test 1: price(14) → expected 100
    Test 2: price(13) → expected 50
    Test 3: price(17) → expected 100
  8. 8.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Size → Menu → Pay → Item → Pens → Cart
    Design B: Home → Results → Size → Cart     (a) Design A (b) Design B
  9. 9.🧰 How do you run (call) a function called greet? (a) run greet (b) #greet (c) greet[] (d) greet()
  10. 10.Which of these is true of a final design? (a) uses the final pictures (b) is a quick sketch (c) has no real colours (d) uses plain grey boxes
  11. 11.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  12. 12.🧪 How many of these test cases pass?
    🎟️ Rule: a ticket costs 50 for children under 10, and 100 for everyone else.
    function price(age) {
      if (age < 10) {
        return 50;
      }
      return 100;
    }
    Test 1: price(11) → expected 100
    Test 2: price(9) → expected 50
    Test 3: price(10) → expected 100
  13. 13.📱 Which one comes from an app store: an app or a website? (a) a website (b) an app
  14. 14.True or false: a final design has the real colours. (a) False (b) True
  15. 15.🎯 Which app would help this user most: a runner who forgets to sip water? (a) a homework planner (b) a big-text reader (c) a water reminder (d) a bus tracker
  16. 16.True or false: a final design has no real colours. (a) False (b) True
  17. 17.🧩 How many buttons does this app screen have?
    [title] New Note
    [text box] City
    [button] Start
    [text box] Subject
    [switch] Sound
  18. 18.🔐 Is this permission request fair or too much: timer → your photos? (a) too much (b) fair
  19. 19.👆 The user taps the button 2 times. What number does the label show now?
    let stars = 7;
    button.onTap = function () {
      stars = stars + 1;
      label.text = stars;
    };
  20. 20.👆 The user taps the button 2 times. What number does the label show now?
    let score = 5;
    button.onTap = function () {
      score = score + 2;
      label.text = score;
    };
  21. 21.🐞 This code has a bug. What number does it ACTUALLY show?
    line 1: let stars = 39; // start at 39
    line 2: stars = stars * 2; // double it
    line 3: stars = stars * 3; // double it
    line 4: stars = stars * 2; // double it
    line 5: show(stars); // show it
  22. 22.📅 An app team plans for 3 days, builds for 11 days, tests for 3 days and releases on 1 more day. Planning starts on day 1. On which day does building finish?
  23. 23.🔁 What is the LAST line this code shows?
    let names = ["Aman", "Zoya", "Meera", "Arjun", "Riya"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    }     (a) Hi, Zoya (b) Hi, Meera (c) Hi, Aman (d) Hi, Riya
  24. 24.🔀 Which badge does this quiz app show?
    let marks = 28;
    if (marks >= 80) {
      show("Gold");
    } else if (marks >= 50) {
      show("Silver");
    } else {
      show("Bronze");
    }     (a) Gold (b) Silver (c) Bronze
  25. 25.📱 Which one updates from the store: an app or a website? (a) an app (b) a website
  26. 26.💾 What number does this code show?
    let score = 6;
    score = score - 4;
    score = score + 2;
    show(score);
  27. 27.💡 Which app idea solves this problem: nobody knows whose bag it is? (a) a bill splitter (b) a medicine reminder (c) a lost-and-found board (d) a homework planner
  28. 28.🧪 How many of these test cases pass?
    🎟️ Rule: a ticket costs 50 for children under 14, and 100 for everyone else.
    function price(age) {
      if (age < 14) {
        return 50;
      }
      return 100;
    }
    Test 1: price(15) → expected 100
    Test 2: price(12) → expected 50
    Test 3: price(14) → expected 100
  29. 29.True or false: the app starts up is a load event. (a) True (b) False
  30. 30.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
  31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. open “Friend list”
    3. open “Map”
    4. tap Back
    5. open “Score card”
    How many times must you tap Back to reach the main screen of this tab?
  32. 32.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
  33. 33.True or false: working out a tip is an output. (a) True (b) False
  34. 34.True or false: the log-in page is a screen. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) the icon shapes (b) the screen layout (c) how easy sign-up is (d) the button colours
  36. 36.True or false: a homework planner is the best fit for a student who keeps forgetting due dates. (a) False (b) True
  37. 37.🐞 This code has a bug. What number does it ACTUALLY show?
    line 1: let stars = 35; // start at 35
    line 2: stars = stars * 2; // double it
    line 3: stars = stars * 2; // double it
    line 4: stars = stars + 8; // add 5
    line 5: show(stars); // show it
  38. 38.🎨 UI stands for user ___. (a) internet (b) input (c) interface (d) idea
  39. 39.🎨 Is this about UI or UX: the button colours? (a) UI (b) UX
  40. 40.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read

Answer key

  1. a menu button
  2. True
  3. True
  4. 3
  5. Edit photo
  6. dead end
  7. 2
  8. Design B
  9. greet()
  10. uses the final pictures
  11. good design
  12. 3
  13. an app
  14. True
  15. a water reminder
  16. False
  17. 1
  18. too much
  19. 9
  20. 9
  21. 468
  22. 14
  23. Hi, Riya
  24. Bronze
  25. an app
  26. 4
  27. a lost-and-found board
  28. 3
  29. True
  30. False
  31. 3
  32. easy to read
  33. False
  34. True
  35. how easy sign-up is
  36. True
  37. 148
  38. interface
  39. UI
  40. hard to read

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