← App development final test lesson New set →

App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 59 · 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.🔐 Is this permission request fair or too much: calculator → location? (a) fair (b) too much
  2. 2.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) pick a theme colour (b) see tasks by day (c) share tasks to friends (d) earn stickers
  3. 3.🧪 A test case is an input together with its ___. (a) app icon (b) screen colour (c) font size (d) expected result
  4. 4.🧭 Why should every screen show where you are? (a) to hide the menu (b) to look busy (c) to use more battery (d) so users do not get lost
  5. 5.🧪 What is the ACTUAL result of Test 1?
    🚚 Rule: delivery is free (0) when the order is 400 or more; otherwise it costs 40.
    function delivery(total) {
      if (total > 400) {
        return 0;
      }
      return 40;
    }
    Test 1: delivery(300) → expected 40
    Test 2: delivery(700) → expected 0
    Test 3: delivery(650) → expected 0
  6. 6.🎨 A beautiful app that confuses everyone has ___. (a) good UI but poor UX (b) perfect UX (c) no UI at all (d) good UX but poor UI
  7. 7.🗒️ A to-do app with no “add a task” feature is ___. (a) well planned (b) ready to release (c) missing a must-have (d) a nice extra
  8. 8.🗒️ What is a must-have feature? (a) a nice extra (b) one the app cannot skip (c) a sound effect (d) a colour theme
  9. 9.🧑 Who is an app really made for? (a) its users (b) its charger (c) its icon (d) its coder only
  10. 10.🧩 In an app, what is tap to Save? (a) data (b) a screen (c) an input (d) a button
  11. 11.🧪 What is the ACTUAL result of Test 1?
    🎟️ Rule: a ticket costs 50 for children under 9, and 100 for everyone else.
    function price(age) {
      if (age < 9) {
        return 50;
      }
      return 100;
    }
    Test 1: price(12) → expected 100
    Test 2: price(11) → expected 100
    Test 3: price(7) → expected 50
  12. 12.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
    line 1: let stars = 36; // start at 36
    line 2: stars = stars - 4; // add 4
    line 3: stars = stars - 2; // take away 2
    line 4: stars = stars * 2; // double it
    line 5: show(stars); // show it
  13. 13.💾 What number does this code show?
    let notes = ["Music", "Sports"];
    notes.push("Hindi");
    notes.push("Maths");
    show(notes.length);
  14. 14.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) earn stickers (b) share tasks to friends (c) set a due date (d) pick a theme colour
  15. 15.🧩 Scores, notes and settings that an app keeps are called ___. (a) tabs (b) data (c) buttons (d) screens
  16. 16.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Item → Address
    Design B: Home → Item → Pay → Shop → Address → Menu → Pens
  17. 17.🎯 A short made-up profile of a typical user is called a ___. (a) password (b) protocol (c) pixel (d) persona
  18. 18.🧪 What is the ACTUAL result of Test 2?
    🎟️ Rule: a ticket costs 50 for children under 8, and 100 for everyone else.
    function price(age) {
      if (age < 8) {
        return 50;
      }
      return 100;
    }
    Test 1: price(4) → expected 50
    Test 2: price(14) → expected 100
    Test 3: price(17) → expected 100
  19. 19.👆 The user taps the button 3 times. What number does the label show now?
    let points = 0;
    button.onTap = function () {
      points = points + 3;
      label.text = points;
    };
  20. 20.👆 What kind of event is this: a countdown hits zero? (a) a tap event (b) a timer event (c) a load event (d) a text event
  21. 21.🔁 What is the LAST line this code shows?
    let names = ["Kabir", "Zoya", "Arjun", "Riya", "Aman"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    }     (a) Hi, Arjun (b) Hi, Zoya (c) Hi, Aman (d) Hi, Kabir
  22. 22.📅 An app team plans for 2 days, builds for 11 days, tests for 1 days and releases on 1 more day. Planning starts on day 1. On which day does building finish?
  23. 23.Which of these is about UI (the look)? (a) how easy sign-up is (b) how fast a task is done (c) the icon shapes (d) whether users get lost
  24. 24.🧩 In an app, what is tap to go Next? (a) an input (b) a button (c) a screen (d) data
  25. 25.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 68 px tall
    Help button: 36 px tall
    Back button: 64 px tall     (a) Back (b) Help (c) Next
  26. 26.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Edit photo”
    2. open “Friend list”
    3. tap the Quiz tab
    4. open “Help page”
    5. tap the Me tab
    Which screen are you on now?     (a) Friend list (b) Edit photo (c) Help page (d) Me
  27. 27.Which colour pair is hard to read? (a) white on dark green (b) black on pale grey (c) dark blue on white (d) light grey on white
  28. 28.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    forgetting birthdays: 23 votes
    no quiet study place: 8 votes
    missing the bus: 24 votes     (a) no quiet study place (b) missing the bus (c) forgetting birthdays
  29. 29.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. tap the Search tab
    3. open “Match report”
    How many times must you tap Back to reach the main screen of this tab?
  30. 30.True or false: a torch is a health app. (a) True (b) False
  31. 31.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
  32. 32.Which of these makes the app harder to use? (a) big touch targets (b) tiny tap areas (c) labels on every icon (d) strong colour contrast
  33. 33.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) whether users get lost (d) the theme colours
  34. 34.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) add money spent (b) show the balance (c) pie-chart colours (d) add money received
  35. 35.True or false: a bus tracker is the best fit for a parent waiting at the bus stop. (a) True (b) False
  36. 36.🔢 In a quiz-app flow, what comes right after “tap “Start quiz””? (a) pick an answer (b) see if it is right (c) read a question (d) see the final score
  37. 37.🖼️ In this wireframe (top to bottom), what is right below the menu icon?
    [ Save button ]
    [ filter buttons ]
    [ menu icon ]
    [ top bar ]     (a) filter buttons (b) top bar (c) Save button
  38. 38.Which of these is an input? (a) the game-over page (b) a date picker (c) the log-in page (d) your high score
  39. 39.True or false: a draft you are typing fits saving on the phone. (a) True (b) False
  40. 40.📊 Survey: which problem bugs you most? How many more votes did “losing water bottles” get than “forgetting homework”?
    losing water bottles: 15 votes
    forgetting birthdays: 8 votes
    forgetting homework: 7 votes

Answer key

  1. too much
  2. see tasks by day
  3. expected result
  4. so users do not get lost
  5. 40
  6. good UI but poor UX
  7. missing a must-have
  8. one the app cannot skip
  9. its users
  10. a button
  11. 100
  12. 76
  13. 4
  14. set a due date
  15. data
  16. 4
  17. persona
  18. 100
  19. 9
  20. a timer event
  21. Hi, Aman
  22. 13
  23. the icon shapes
  24. a button
  25. Help
  26. Me
  27. light grey on white
  28. missing the bus
  29. 1
  30. False
  31. 1
  32. tiny tap areas
  33. the theme colours
  34. pie-chart colours
  35. True
  36. read a question
  37. top bar
  38. a date picker
  39. True
  40. 8

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