← App development final test lesson New set →

App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 819 · 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 of these can often still work with no internet? (a) a new website (b) an installed app (c) a video call (d) an online search
  2. 2.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
  3. 3.🧪 How many of these test cases pass?
    📝 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(9) → expected Pass
    Test 2: result(3) → expected Try again
    Test 3: result(7) → expected Pass
  4. 4.👆 The user taps the button 3 times. What number does the label show now?
    let likes = 0;
    button.onTap = function () {
      if (likes < 2) {
        likes = likes + 1;
      }
      label.text = likes;
    };
  5. 5.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Chat tab
    2. open “Score card”
    3. open “Edit photo”
    How many times must you tap Back to reach the main screen of this tab?
  6. 6.True or false: a draft you are typing fits saving in the cloud. (a) True (b) False
  7. 7.True or false: the user taps Play is a text event. (a) True (b) False
  8. 8.👥 A clinic app has 290 patients, 40 doctors and 105 nurses as users. Which user group is the biggest? (a) doctors (b) nurses (c) patients
  9. 9.🎯 Which app would help this user most: a grandparent with weak eyesight? (a) a big-text reader (b) a bus tracker (c) a pocket-money tracker (d) a recipe finder
  10. 10.🧪 How many of these test cases pass?
    🎟️ 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(8) → expected 100
    Test 2: price(4) → expected 50
    Test 3: price(14) → expected 100
  11. 11.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
  12. 12.True or false: a draft you are typing fits saving on the phone. (a) True (b) False
  13. 13.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) show the balance (b) add money received (c) savings stickers (d) add money spent
  14. 14.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Search → Pens → Menu
    Design B: Home → Shop → Results → Menu → Address → Item → Size     (a) Design B (b) Design A
  15. 15.👆 The user taps the button 3 times. What does the label show now?
    let on = false;
    button.onTap = function () {
      on = !on;
      if (on) {
        label.text = "ON";
      } else {
        label.text = "OFF";
      }
    };     (a) ON (b) OFF
  16. 16.🎨 Who should you test the UX with? (a) only yourself (b) nobody (c) the app icon (d) real users
  17. 17.Which colour pair is easy to read? (a) yellow on white (b) dark blue on black (c) white on black (d) pale pink on white
  18. 18.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 310; // typed by the user
    line 2: let off = 50; // typed by the user
    line 3: let pay = price - off;
    line 4: show(pay);     (a) line 3 (b) line 2 (c) line 4 (d) line 1
  19. 19.💾 Which can hold many values in order? (a) a switch (b) a single number (c) a list (d) a button
  20. 20.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 330; // typed by the user
    line 2: let off = 10; // typed by the user
    line 3: let pay = price - off;
    line 4: show(pay);     (a) line 3 (b) line 4 (c) line 2 (d) line 1
  21. 21.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(3) + points(2));
  22. 22.Which of these is a screen? (a) tap to Save (b) the log-in page (c) your high score (d) your saved notes
  23. 23.🔢 In a photo-post flow, which comes LAST? (a) take the photo (b) post the photo (c) add a filter (d) open the camera screen
  24. 24.🔍 Which is the odd one out? (a) adding up a bill (b) checking a password (c) sorting the scores (d) taking a photo
  25. 25.🔁 Why use a loop to show 100 messages? (a) it uses more lines (b) less code to write (c) it is slower (d) it hides them
  26. 26.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) savings stickers (b) pie-chart colours (c) show the balance (d) export to a file
  27. 27.🎨 A beautiful app that confuses everyone has ___. (a) good UX but poor UI (b) good UI but poor UX (c) perfect UX (d) no UI at all
  28. 28.🔀 What number does this shop app show?
    let total = 820;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
  29. 29.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
    line 1: let lives = 50; // start at 50
    line 2: lives = lives + 2; // add 2
    line 3: lives = lives - 6; // add 6
    line 4: show(lives); // show it
  30. 30.Which of these happens at the idea stage? (a) sketch the screens (b) try every button (c) list what users need (d) share the download link
  31. 31.True or false: a result on screen is an input. (a) True (b) False
  32. 32.🚀 Your app is at version 2.3.5. The next release adds a new feature. What is its version number? (a) 2.4.0 (b) 2.3.6 (c) 2.4.5 (d) 3.0.0
  33. 33.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] Sign Up
    [button] Back
    [text box] Subject
    [text box] Age
    [button] Next
  34. 34.🔢 In a food-order flow, which comes first: “check the cart” or “open the menu”? (a) open the menu (b) check the cart
  35. 35.👥 A library app has 300 readers, 95 librarians and 75 volunteers as users. Which user group is the biggest? (a) readers (b) volunteers (c) librarians
  36. 36.🎯 Is this a user need or a feature: a share button? (a) a feature (b) a user need
  37. 37.Which of these is true of a wireframe? (a) shows the real fonts (b) uses the final pictures (c) is a quick sketch (d) has the real colours
  38. 38.True or false: strong colour contrast is good button design. (a) False (b) True
  39. 39.True or false: a party-invite app for friends needs the camera. (a) True (b) False
  40. 40.🎨 UX stands for user ___. (a) express (b) extra (c) experience (d) example

Answer key

  1. an installed app
  2. makes it harder
  3. 3
  4. 2
  5. 2
  6. False
  7. False
  8. patients
  9. a big-text reader
  10. 2
  11. False
  12. True
  13. savings stickers
  14. Design A
  15. ON
  16. real users
  17. white on black
  18. line 3
  19. a list
  20. line 3
  21. 60
  22. the log-in page
  23. post the photo
  24. taking a photo
  25. less code to write
  26. show the balance
  27. good UI but poor UX
  28. 770
  29. 58
  30. list what users need
  31. False
  32. 2.4.0
  33. 2
  34. open the menu
  35. readers
  36. a feature
  37. is a quick sketch
  38. True
  39. False
  40. experience

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