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App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 943 · 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.🧭 About how many tabs suit a tab bar best? (a) 10 to 12 (b) 20 (c) 1 (d) 3 to 5
  2. 2.🔢 In a quiz-app flow, which comes first: “see if it is right” or “see the final score”? (a) see the final score (b) see if it is right
  3. 3.🖼️ In this wireframe (top to bottom), what is right above the tab bar?
    [ list of items ]
    [ tab bar ]
    [ title text ]
    [ menu icon ]     (a) title text (b) menu icon (c) list of items
  4. 4.Which of these requests asks for too much? (a) map app → location (b) camera app → camera (c) voice notes → microphone (d) quiz app → microphone
  5. 5.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. tap the Search tab
    3. open “Help page”
    Which screen are you on now?     (a) Score card (b) Search (c) Help page (d) Home
  6. 6.⚙️ What number does this app show?
    let price = 75; // typed by the user
    let qty = 2; // typed by the user
    let total = price * qty;
    show(total);
  7. 7.🔍 Which is the odd one out? (a) a result on screen (b) a pop-up message (c) typing your age (d) a beep sound
  8. 8.True or false: a final design uses plain grey boxes. (a) False (b) True
  9. 9.True or false: a party-invite app for friends needs your contacts. (a) False (b) True
  10. 10.True or false: a pocket-money tracker is the best fit for a teen whose money runs out by Friday. (a) False (b) True
  11. 11.Which of these requests asks for too much? (a) voice notes → microphone (b) calculator → location (c) calling app → contacts (d) map app → location
  12. 12.📱 Which one comes from an app store: an app or a website? (a) a website (b) an app
  13. 13.⚙️ What number does this app show?
    let price = 100; // typed by the user
    let qty = 2; // typed by the user
    let total = price * qty;
    show(total);
  14. 14.🔍 Which is the odd one out? (a) working out a tip (b) checking a password (c) speaking a command (d) sorting the scores
  15. 15.🗒️ What is a must-have feature? (a) a colour theme (b) a nice extra (c) one the app cannot skip (d) a sound effect
  16. 16.🧰 What is a function? (a) a screen size (b) a named block of code (c) a type of phone (d) a list of colours
  17. 17.True or false: a draft you are typing fits saving in the cloud. (a) False (b) True
  18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 60 px tall
    Save button: 48 px tall
    Next button: 44 px tall
  19. 19.🗒️ In MVP, the M stands for ___. (a) music (b) mobile (c) minimum (d) maximum
  20. 20.True or false: a homework planner is the best fit for a child saving up for a cycle. (a) False (b) True
  21. 21.🧪 One test case fails. Which one?
    📝 Rule: a quiz is passed with 5 or more right answers.
    function result(right) {
      if (right > 5) {
        return "Pass";
      }
      return "Try again";
    }
    Test 1: result(2) → expected Try again
    Test 2: result(5) → expected Pass
    Test 3: result(6) → expected Pass     (a) Test 3 (b) Test 2 (c) Test 1
  22. 22.Which of these is about UI (the look)? (a) how fast a task is done (b) how users feel after (c) whether users get lost (d) the icon shapes
  23. 23.👥 A school app has 150 students, 25 teachers and 250 parents as users. Which user group is the biggest? (a) parents (b) teachers (c) students
  24. 24.🧑 Who is an app really made for? (a) its charger (b) its icon (c) its users (d) its coder only
  25. 25.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Match report”
    2. open “Score card”
    3. tap the Quiz tab
    4. open “Score card”
    5. tap Back
    How many times must you tap Back to reach the main screen of this tab?
  26. 26.🔀 What does this battery rule show?
    let battery = 57;
    if (battery < 20) {
      show("Low battery");
    } else {
      show("Battery OK");
    }     (a) Battery OK (b) Low battery
  27. 27.True or false: a guitar tuner needs the microphone. (a) True (b) False
  28. 28.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) in the cloud (b) on the phone
  29. 29.🔢 In a food-order flow, what comes right after “check the cart”? (a) open the menu (b) track the order (c) pick a dish (d) pay for the order
  30. 30.🧪 What is the ACTUAL result of Test 1?
    🎟️ 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(15) → expected 100
    Test 2: price(16) → expected 100
    Test 3: price(11) → expected 50
  31. 31.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    missing the bus: 21 votes
    losing water bottles: 6 votes
    forgetting homework: 10 votes     (a) losing water bottles (b) forgetting homework (c) missing the bus
  32. 32.💡 Which app idea solves this problem: a patient misses doses? (a) a bill splitter (b) a medicine reminder (c) a study-room finder (d) a lost-and-found board
  33. 33.🗒️ Version 1 of a bus tracker must be ready in 9 days. How many days are left for extras after the must-haves?
    see where the bus is: 2 days
    show arrival time: 1 days
    pick your bus stop: 5 days
  34. 34.🗒️ Version 1 of a homework planner must be ready in 9 days. How many days are left for extras after the must-haves?
    add a homework task: 2 days
    set a due date: 2 days
    see tasks by day: 2 days
  35. 35.🔍 Which is the odd one out? (a) draw the user flow (b) sketch the screens (c) pick the features (d) list what users need
  36. 36.📅 An app team plans for 5 days, builds for 5 days, tests for 2 days and releases on 1 more day. How many days does the whole project take?
  37. 37.🔐 Which permission does a birthday list of friends really need? (a) location (b) the camera (c) contacts (d) the microphone
  38. 38.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) on the phone (b) in the cloud
  39. 39.📱 Which one has a home-screen icon: an app or a website? (a) a website (b) an app
  40. 40.🔢 When you make an app, which comes first: “plan the screens” or “build the app”? (a) plan the screens (b) build the app

Answer key

  1. 3 to 5
  2. see if it is right
  3. list of items
  4. quiz app → microphone
  5. Help page
  6. 150
  7. typing your age
  8. False
  9. True
  10. True
  11. calculator → location
  12. an app
  13. 200
  14. speaking a command
  15. one the app cannot skip
  16. a named block of code
  17. False
  18. 2
  19. minimum
  20. False
  21. Test 2
  22. the icon shapes
  23. parents
  24. its users
  25. 0
  26. Battery OK
  27. True
  28. in the cloud
  29. pay for the order
  30. 100
  31. missing the bus
  32. a medicine reminder
  33. 1
  34. 3
  35. list what users need
  36. 13
  37. contacts
  38. on the phone
  39. an app
  40. plan the screens

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