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App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 864 · 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.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) add a homework task (b) share tasks to friends (c) pick a theme colour (d) earn stickers
  2. 2.Which colour pair is easy to read? (a) dark blue on black (b) yellow on white (c) pale pink on white (d) black on pale grey
  3. 3.🔁 What number does this code show?
    let steps = [2, 20, 5];
    let best = 0;
    for (let i = 0; i < steps.length; i++) {
      if (steps[i] > best) {
        best = steps[i];
      }
    }
    show(best);
  4. 4.🌐 Which program do you need to open a website? (a) a calculator (b) a web browser (c) an app store (d) a camera app
  5. 5.🧩 How many buttons does this app screen have?
    [title] Add Homework
    [button] Start
    [text box] Notes
    [text box] Name
    [switch] Sound
  6. 6.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Friend list”
    2. tap the Home tab
    3. open “Badges”
    4. tap Back
    Which screen are you on now?     (a) Home (b) Friend list (c) Badges (d) Search
  7. 7.👆 What kind of event is this: the app starts up? (a) a text event (b) a tap event (c) a load event (d) a timer event
  8. 8.🎨 UI stands for user ___. (a) input (b) internet (c) idea (d) interface
  9. 9.✏️ What is a wireframe? (a) a type of password (b) the finished app (c) a charging cable (d) a simple screen sketch
  10. 10.🎯 Which app would help this user most: a parent waiting at the bus stop? (a) a bus tracker (b) a pocket-money tracker (c) a recipe finder (d) a homework planner
  11. 11.🧪 What is the ACTUAL result of Test 2?
    🚚 Rule: delivery is free (0) when the order is 600 or more; otherwise it costs 40.
    function delivery(total) {
      if (total >= 600) {
        return 0;
      }
      return 40;
    }
    Test 1: delivery(500) → expected 40
    Test 2: delivery(850) → expected 0
    Test 3: delivery(950) → expected 0
  12. 12.📅 An app team plans for 2 days, builds for 11 days, tests for 1 days and releases on 1 more day. How many days does the whole project take?
  13. 13.🗒️ In MVP, the M stands for ___. (a) maximum (b) mobile (c) music (d) minimum
  14. 14.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 44 px tall
    Save button: 60 px tall
    Done button: 52 px tall
  15. 15.🗂️ What kind of app is a times-table quiz? (a) a tool app (b) a game (c) a health app (d) a learning app
  16. 16.👥 A cricket club app has 185 players, 215 coaches and 30 fans as users. How many more coaches than players are there?
  17. 17.📱 Which one comes from an app store: an app or a website? (a) a website (b) an app
  18. 18.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(65, 3));
  19. 19.🧰 Why write a function? (a) to make code longer (b) to reuse code (c) to hide errors (d) to slow the app
  20. 20.🎯 Is this a user need or a feature: “Small text is hard”? (a) a feature (b) a user need
  21. 21.🧪 How many of these test cases pass?
    📝 Rule: a quiz is passed with 8 or more right answers.
    function result(right) {
      if (right >= 8) {
        return "Pass";
      }
      return "Try again";
    }
    Test 1: result(10) → expected Pass
    Test 2: result(13) → expected Pass
    Test 3: result(5) → expected Try again
  22. 22.🧩 In an app, what is the log-in page? (a) a button (b) data (c) a screen (d) an input
  23. 23.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Score card”
    2. tap Back
    3. open “Help page”
    Which screen are you on now?     (a) Lessons (b) Score card (c) Quiz (d) Help page
  24. 24.⚙️ What number does this app show?
    let price = 50; // typed by the user
    let qty = 2; // typed by the user
    let total = price * qty;
    show(total);
  25. 25.🗒️ You are planning version 1 of a bus tracker. Which feature is a MUST-HAVE? (a) rate the driver (b) change the bus icon (c) see where the bus is (d) a dark mode
  26. 26.👆 An event in an app is ___. (a) an app store (b) something that happens (c) a colour theme (d) a kind of list
  27. 27.👥 A cricket club app has 20 players, 180 coaches and 275 fans as users. How many users does it have in all?
  28. 28.Which of these is a button? (a) your high score (b) the home page of an app (c) tap to go Next (d) the log-in page
  29. 29.🔁 What is the LAST line this code shows?
    let names = ["Zoya", "Aman", "Riya", "Kabir"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    }     (a) Hi, Riya (b) Hi, Zoya (c) Hi, Aman (d) Hi, Kabir
  30. 30.🧪 What is the ACTUAL result of Test 2?
    🎟️ Rule: a ticket costs 50 for children under 13, and 100 for everyone else.
    function price(age) {
      if (age < 13) {
        return 50;
      }
      return 100;
    }
    Test 1: price(12) → expected 50
    Test 2: price(13) → expected 100
    Test 3: price(17) → expected 100
  31. 31.🚀 Which version is newer: 3.0.9 or 3.0.10? (a) 3.0.10 (b) 3.0.9
  32. 32.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
  33. 33.🔁 What number does this code show?
    let runs = [13, 19, 19];
    let best = 0;
    for (let i = 0; i < runs.length; i++) {
      if (runs[i] > best) {
        best = runs[i];
      }
    }
    show(best);
  34. 34.🗒️ You are planning version 1 of a homework planner. Which feature can WAIT for a later version? (a) add a homework task (b) see tasks by day (c) set a due date (d) share tasks to friends
  35. 35.💾 What number does this code show?
    let coins = 4;
    coins = coins - 4;
    coins = coins + 1;
    show(coins);
  36. 36.⚙️ Which line does the processing (works out the answer)?
    line 1: let bill = 159; // typed by the user
    line 2: let friends = 3; // typed by the user
    line 3: let share = bill / friends;
    line 4: show(share);     (a) line 3 (b) line 2 (c) line 4 (d) line 1
  37. 37.💾 pop() takes off the last item. What does this code show?
    let notes = ["Art", "Hindi", "Maths", "Science", "Sports"];
    notes.pop();
    show(notes[notes.length - 1]);     (a) Science (b) Art (c) Maths (d) Hindi
  38. 38.🔍 Which is the odd one out? (a) text that can grow (b) strong colour contrast (c) tiny tap areas (d) big touch targets
  39. 39.🧩 What does a button do when you tap it? (a) changes the phone (b) saves the battery (c) starts an action (d) shows the time
  40. 40.🧭 Why should every screen show where you are? (a) to use more battery (b) to hide the menu (c) so users do not get lost (d) to look busy

Answer key

  1. add a homework task
  2. black on pale grey
  3. 20
  4. a web browser
  5. 1
  6. Home
  7. a load event
  8. interface
  9. a simple screen sketch
  10. a bus tracker
  11. 0
  12. 15
  13. minimum
  14. 2
  15. a learning app
  16. 30
  17. an app
  18. 195
  19. to reuse code
  20. a user need
  21. 3
  22. a screen
  23. Help page
  24. 100
  25. see where the bus is
  26. something that happens
  27. 475
  28. tap to go Next
  29. Hi, Kabir
  30. 100
  31. 3.0.10
  32. hard to read
  33. 19
  34. share tasks to friends
  35. 1
  36. line 3
  37. Science
  38. tiny tap areas
  39. starts an action
  40. so users do not get lost

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