App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 876 · 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.🔀 What does this battery rule show?
   let battery = 90;
   if (battery < 20) {
     show("Low battery");
   } else {
     show("Battery OK");
   } (a) Battery OK (b) Low battery
2. 2.🔀 What does this PIN rule show?
   let pin = "32104";
   if (pin.length === 4) {
     show("PIN saved");
   } else {
     show("Use 4 digits");
   } (a) PIN saved (b) Use 4 digits
3. 3.🔁 What number does this code show?
   let runs = [19, 16, 10];
   let best = 0;
   for (let i = 0; i < runs.length; i++) {
     if (runs[i] > best) {
       best = runs[i];
     }
   }
   show(best);
4. 4.🧭 Which part of navigation hides extra links? (a) the back button (b) a tab bar (c) a menu button
5. 5.🔁 What number does this code show?
   let steps = [12, 15, 16, 7, 5];
   let best = 0;
   for (let i = 0; i < steps.length; i++) {
     if (steps[i] > best) {
       best = steps[i];
     }
   }
   show(best);
6. 6.👥 A school app has 155 students, 180 teachers and 175 parents as users. How many users does it have in all?
7. 7.👆 Code that runs when an event happens is called a ___. (a) header (b) headline (c) handler (d) hashtag
8. 8.💡 Which app idea solves this problem: a team shares one snack bill? (a) a homework planner (b) a study-room finder (c) a bill splitter (d) a medicine reminder
9. 9.Which of these is an output? (a) checking a password (b) a beep sound (c) sorting the scores (d) tapping a button
10. 10.Which of these is a user need? (a) a reminder alarm (b) a share button (c) “I keep missing the bus” (d) a search bar
11. 11.🗂️ What kind of app is an alarm clock? (a) a learning app (b) a game (c) a health app (d) a tool app
12. 12.📱 Which one comes from an app store: an app or a website? (a) a website (b) an app
13. 13.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) an avatar shop (b) confetti effects (c) background music (d) check the answer
14. 14.💡 Does an app idea like an app that just says hi solve a real problem? (a) Yes (b) No
15. 15.🚀 Your app is at version 1.9.6. The next release fixes a small bug. What is its version number? (a) 2.0.0 (b) 1.9.7 (c) 1.10.6 (d) 1.10.0
16. 16.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 80; // typed by the user
    line 2: let qty = 4; // typed by the user
    line 3: let total = price * qty;
    line 4: show(total); (a) line 1 (b) line 4 (c) line 2 (d) line 3
17. 17.🧩 What do we call one full page of an app? (a) a cable (b) a battery (c) a variable (d) a screen
18. 18.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. open “Match report”
    3. tap the Settings tab
    4. tap the Feed tab
    Which screen are you on now? (a) Map (b) Chat (c) Match report (d) Feed
19. 19.True or false: the icon shapes is about UI (the look). (a) True (b) False
20. 20.💾 What number does this code show?
    let coins = 6;
    coins = coins - 3;
    coins = coins + 2;
    show(coins);
21. 21.🔁 A loop over a list of 5 items runs its body how many times? (a) 4 (b) 1 (c) 5 (d) 6
22. 22.🧭 What does the back button usually do? (a) opens settings (b) deletes the page (c) goes to the last screen (d) closes all apps
23. 23.True or false: the settings page is a button. (a) True (b) False
24. 24.True or false: a puzzle with levels is a game. (a) False (b) True
25. 25.🧩 In an app, what is the settings page? (a) an input (b) a button (c) a screen (d) data
26. 26.📅 An app team plans for 3 days, builds for 4 days, tests for 2 days and releases on 1 more day. How many days does the whole project take?
27. 27.👆 What kind of event is this: the app starts up? (a) a text event (b) a timer event (c) a load event (d) a tap event
28. 28.🔁 What is the LAST line this code shows?
    let names = ["Zoya", "Kabir", "Riya", "Aman", "Meera"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Riya (b) Hi, Meera (c) Hi, Kabir (d) Hi, Zoya
29. 29.👥 A cricket club app has 195 players, 145 coaches and 95 fans as users. How many users does it have in all?
30. 30.👆 A tap handler runs how many times if the user taps 4 times? (a) 1 (b) 0 (c) 8 (d) 4
31. 31.🔁 In for (let i = 0; i < 3; i++), which values does i take? (a) 0, 1, 2, 3 (b) 3 (c) 1, 2, 3 (d) 0, 1, 2
32. 32.🔢 In a quiz-app flow, which comes first: “pick an answer” or “read a question”? (a) read a question (b) pick an answer
33. 33.🔀 What number does this shop app show?
    let total = 880;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
34. 34.True or false: how many taps it takes is about UI (the look). (a) True (b) False
35. 35.🧩 In an app, what is the log-in page? (a) a button (b) data (c) a screen (d) an input
36. 36.👆 The user taps the button 6 times. What number does the label show now?
    let score = 9;
    button.onTap = function () {
      score = score + 3;
      label.text = score;
    };
37. 37.🔢 When you make an app, what comes right after “test the app”? (a) build the app (b) release it (c) get an idea (d) plan the screens
38. 38.🔐 Which permission does a weather-near-me app really need? (a) the camera (b) contacts (c) location (d) the microphone
39. 39.True or false: a pocket-money tracker is the best fit for a teen learning to make snacks. (a) True (b) False
40. 40.Which of these happens at the idea stage? (a) draw the user flow (b) try every button (c) sketch the screens (d) list what users need

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