App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 241 · 40 questions

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.

1. 1.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ search box ]
   [ Add button ]
   [ Save button ]
   [ title text ]
   [ menu icon ] (a) title text (b) search box (c) Save button (d) menu icon
2. 2.Which of these is about UI (the look)? (a) how fast a task is done (b) the button colours (c) whether users get lost (d) how easy sign-up is
3. 3.🧪 One test case fails. Which one?
   📝 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(5) → expected Try again
   Test 2: result(10) → expected Pass
   Test 3: result(8) → expected Pass (a) Test 1 (b) Test 3 (c) Test 2
4. 4.🔢 In a sign-up flow, which comes FIRST? (a) enter the code sent (b) see the home screen (c) type name and email (d) open the app
5. 5.💾 What number does this code show?
   let coins = 7;
   coins = coins - 5;
   coins = coins + 3;
   show(coins);
6. 6.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) confetti effects (b) an avatar shop (c) check the answer (d) background music
7. 7.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
   line 1: let points = 49; // start at 47
   line 2: points = points * 2; // double it
   line 3: points = points + 4; // add 4
   line 4: show(points); // show it
8. 8.📊 Survey: which problem bugs you most? How many more votes did “no quiet study place” get than “forgetting homework”?
   forgetting homework: 3 votes
   wasting pocket money: 7 votes
   no quiet study place: 13 votes
9. 9.Which of these is an input? (a) a beep sound (b) adding up a bill (c) tapping a button (d) a buzz (vibration)
10. 10.🎨 Is this about UI or UX: the icon shapes? (a) UX (b) UI
11. 11.🧪 A test fails when ___. (a) actual is not expected (b) the app is new (c) the font is big (d) both are the same
12. 12.🔀 What does this battery rule show?
    let battery = 2;
    if (battery < 20) {
      show("Low battery");
    } else {
      show("Battery OK");
    } (a) Battery OK (b) Low battery
13. 13.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Badges”
    2. open “Help page”
    3. open “Score card”
    4. tap Back
    5. tap the Lessons tab
    Which screen are you on now? (a) Help page (b) Badges (c) Score card (d) Lessons
14. 14.Which colour pair is hard to read? (a) white on dark green (b) red on green (c) black on yellow (d) black on pale grey
15. 15.🧩 How many buttons does this app screen have?
    [title] Order Snacks
    [text box] Email
    [button] Next
    [text box] Due date
16. 16.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(1) + points(5));
17. 17.🧭 About how many tabs suit a tab bar best? (a) 1 (b) 20 (c) 3 to 5 (d) 10 to 12
18. 18.🔢 In a food-order flow, what comes right after “check the cart”? (a) pick a dish (b) add it to the cart (c) track the order (d) pay for the order
19. 19.🔢 When you make an app, what comes right after “plan the screens”? (a) get an idea (b) test the app (c) release it (d) build the app
20. 20.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Video”
    2. open “Match report”
    3. tap the Lessons tab
    4. open “Map”
    5. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
21. 21.Which of these requests is fair? (a) camera app → camera (b) quiz app → microphone (c) timer → your photos (d) torch → contacts
22. 22.🎨 Who should you test the UX with? (a) nobody (b) the app icon (c) only yourself (d) real users
23. 23.🐞 After fixing a bug you should ___. (a) delete the test (b) release at once (c) never test (d) test it again
24. 24.📊 Survey: which problem bugs you most? How many students voted in all?
    losing water bottles: 4 votes
    missing the bus: 25 votes
    wasting pocket money: 23 votes
25. 25.True or false: a website has a web address. (a) False (b) True
26. 26.🔐 A torch app asks for your contacts. What should you do? (a) deny it (b) post them online (c) allow it (d) share them all
27. 27.🔍 Which is the odd one out? (a) the theme colours (b) how many taps it takes (c) the screen layout (d) the button colours
28. 28.📊 Survey: which problem bugs you most? How many more votes did “forgetting homework” get than “missing the bus”?
    missing the bus: 11 votes
    no quiet study place: 6 votes
    forgetting homework: 21 votes
29. 29.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Address → Size → Offers → Item → Pay → Shop
    Design B: Home → Pay → Menu → Shop → Search (a) Design B (b) Design A
30. 30.💡 Does an app idea like a free study-room finder solve a real problem? (a) No (b) Yes
31. 31.👆 The user types Zoya in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Welcome, " + nameBox.text + "!";
    }; (a) Welcome, nameBox.text! (b) Welcome, Zoya! (c) Welcome! (d) Zoya
32. 32.True or false: grey text on grey is good button design. (a) True (b) False
33. 33.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) share tasks to friends (b) earn stickers (c) pick a theme colour (d) see tasks by day
34. 34.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
35. 35.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(25, 3));
36. 36.🧪 One test case fails. Which one?
    📝 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(6) → expected Try again
    Test 2: result(9) → expected Pass
    Test 3: result(8) → expected Pass (a) Test 2 (b) Test 1 (c) Test 3
37. 37.👥 A clinic app has 200 patients, 255 doctors and 155 nurses as users. How many users does it have in all?
38. 38.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap the Home tab
    3. open “Friend list”
    4. tap the Home tab
    How many times must you tap Back to reach the main screen of this tab?
39. 39.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Offers → Shop → Pens → Item
    Design B: Home → Pens → Offers (a) Design B (b) Design A
40. 40.🧪 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(11) → expected 100
    Test 2: price(4) → expected 50
    Test 3: price(10) → expected 100

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