App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 784 · 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.Which of these fits saving in the cloud? (a) notes to read offline (b) a class leaderboard (c) a draft you are typing (d) the sound on/off setting
2. 2.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
3. 3.🐞 What is a good first step when an app gives a wrong result? (a) delete the app (b) find where it goes wrong (c) add more colours (d) buy a new phone
4. 4.🧰 What does this code show?
   function greet(name) {
     return "Hi, " + name + "!";
   }
   show(greet("Meera")); (a) Meera (b) Hi, name! (c) greet (d) Hi, Meera!
5. 5.True or false: a pop-up message is an output. (a) True (b) False
6. 6.True or false: a final design uses plain grey boxes. (a) True (b) False
7. 7.🗒️ In MVP, the M stands for ___. (a) maximum (b) minimum (c) mobile (d) music
8. 8.🎯 Which app would help this user most: a parent waiting at the bus stop? (a) a recipe finder (b) a bus tracker (c) a big-text reader (d) a water reminder
9. 9.Which of these is true of a final design? (a) uses the final pictures (b) uses plain grey boxes (c) has no real colours (d) shows where things go
10. 10.🔁 What number does this code show?
    let runs = [5, 10, 9, 5, 1];
    let total = 0;
    for (let i = 0; i < runs.length; i++) {
      total = total + runs[i];
    }
    show(total);
11. 11.🔢 In a sign-up flow, which comes first: “see the home screen” or “open the app”? (a) see the home screen (b) open the app
12. 12.✏️ What is a wireframe? (a) a charging cable (b) the finished app (c) a type of password (d) a simple screen sketch
13. 13.True or false: the search box changes is a timer event. (a) True (b) False
14. 14.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a wireframe (b) a final design
15. 15.♿ What does a screen reader do? (a) plays music (b) reads the screen aloud (c) makes text tiny (d) takes photos
16. 16.🎯 What is the best first step to learn what users need? (a) guess on your own (b) pick the colours (c) ask and watch users (d) write the code
17. 17.🔐 Is this permission request fair or too much: torch → contacts? (a) fair (b) too much
18. 18.Which of these fits saving in the cloud? (a) notes to read offline (b) the sound on/off setting (c) a draft you are typing (d) photos on two devices
19. 19.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. open “Help page”
    3. tap the Search tab
    How many times must you tap Back to reach the main screen of this tab?
20. 20.🔢 In a food-order flow, which comes FIRST? (a) check the cart (b) open the menu (c) pick a dish (d) pay for the order
21. 21.🗒️ You are planning version 1 of a water reminder. Which feature is a MUST-HAVE? (a) custom alert sounds (b) water animations (c) share your streak (d) see today’s total
22. 22.🔀 What number does this shop app show?
    let total = 200;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
23. 23.True or false: you add the buttons at the build stage. (a) False (b) True
24. 24.🧰 What number does this code show?
    function double(n) {
      return n * 2;
    }
    show(double(13));
25. 25.🔀 What does this PIN rule show?
    let pin = "16599";
    if (pin.length === 4) {
      show("PIN saved");
    } else {
      show("Use 4 digits");
    } (a) PIN saved (b) Use 4 digits
26. 26.🧪 What is the ACTUAL result of Test 1?
    🎟️ 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(12) → expected 100
    Test 3: price(15) → expected 100
27. 27.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Help page”
    2. tap Back
    3. open “Video”
    4. open “Help page”
    Which screen are you on now? (a) Feed (b) Video (c) Chat (d) Help page
28. 28.Which of these is a user need? (a) a reminder alarm (b) “What should I cook?” (c) a dark mode switch (d) a search bar
29. 29.🗒️ You are planning version 1 of a water reminder. Which feature can WAIT for a later version? (a) see today’s total (b) set a reminder time (c) share your streak (d) log a glass of water
30. 30.🔍 Which is the odd one out? (a) try every button (b) write down the bugs (c) let friends try it (d) spot a problem to solve
31. 31.🚀 Your app is at version 2.9.6. The next release fixes a small bug. What is its version number? (a) 2.10.6 (b) 2.9.7 (c) 3.0.0 (d) 2.10.0
32. 32.🔀 When does the else part run? (a) when the test is true (b) when the test is false (c) always (d) never
33. 33.🚀 Which version is newer: 2.3.0 or 2.10.0? (a) 2.10.0 (b) 2.3.0
34. 34.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a final design (b) a wireframe
35. 35.🗒️ Version 1 of a water reminder must be ready in 14 days. How many days are left for extras after the must-haves?
    set a reminder time: 3 days
    log a glass of water: 2 days
    see today’s total: 5 days
36. 36.🧩 Scores, notes and settings that an app keeps are called ___. (a) tabs (b) data (c) buttons (d) screens
37. 37.⚙️ What number does this app show?
    let price = 60; // typed by the user
    let qty = 5; // typed by the user
    let total = price * qty;
    show(total);
38. 38.True or false: a tiny 20 px button is good button design. (a) False (b) True
39. 39.🔐 Is this permission request fair or too much: map app → location? (a) too much (b) fair
40. 40.🔁 What number does this code show?
    let runs = [65, 33, 16, 99];
    let count = 0;
    for (let i = 0; i < runs.length; i++) {
      if (runs[i] >= 60) {
        count = count + 1;
      }
    }
    show(count);

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