App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 304 · 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.🗒️ Version 1 of a homework planner must be ready in 13 days. How many days are left for extras after the must-haves?
   add a homework task: 3 days
   set a due date: 1 days
   see tasks by day: 4 days
2. 2.🔁 What is the LAST line this code shows?
   let names = ["Meera", "Kabir", "Zoya", "Aman", "Riya"];
   for (let i = 0; i < names.length; i++) {
     show("Hi, " + names[i]);
   } (a) Hi, Kabir (b) Hi, Riya (c) Hi, Meera (d) Hi, Zoya
3. 3.True or false: how easy sign-up is is about UX (the experience). (a) True (b) False
4. 4.Which of these fits saving in the cloud? (a) a draft you are typing (b) notes to read offline (c) the sound on/off setting (d) chat messages to friends
5. 5.🧪 A test case is an input together with its ___. (a) screen colour (b) expected result (c) app icon (d) font size
6. 6.🧩 What does a button do when you tap it? (a) saves the battery (b) starts an action (c) shows the time (d) changes the phone
7. 7.🔐 Is this permission request fair or too much: quiz app → microphone? (a) too much (b) fair
8. 8.🧰 What does this code show?
   function greet(name) {
     return "Hello, " + name + "!";
   }
   show(greet("Aman")); (a) Hello, name! (b) greet (c) Hello, Aman! (d) Aman
9. 9.🔢 In a food-order flow, which comes FIRST? (a) pick a dish (b) open the menu (c) track the order (d) add it to the cart
10. 10.📊 Survey: which problem bugs you most? How many students voted in all?
    losing water bottles: 21 votes
    forgetting homework: 7 votes
    wasting pocket money: 11 votes
11. 11.Which of these app ideas solves a real problem? (a) a blank grey screen (b) a page of random dots (c) a bill splitter (d) a button with no action
12. 12.🔢 In a sign-up flow, which comes first: “make a password” or “enter the code sent”? (a) enter the code sent (b) make a password
13. 13.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Score card”
    3. open “Edit photo”
    4. tap Back
    5. open “Help page”
    How many times must you tap Back to reach the main screen of this tab?
14. 14.Which of these is processing? (a) typing your age (b) a result on screen (c) taking a photo (d) sorting the scores
15. 15.🚀 Which version is newer: 1.0.5 or 1.0.15? (a) 1.0.5 (b) 1.0.15
16. 16.🛠️ At which stage do you list what users need? (a) the plan stage (b) the release stage (c) the test stage (d) the idea stage
17. 17.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] Edit Profile
    [slider] Brightness
    [button] Start
    [text box] Name
18. 18.👆 What kind of event is this: the screen first opens? (a) a text event (b) a tap event (c) a load event (d) a timer event
19. 19.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) notes to read offline (d) a class leaderboard
20. 20.🧩 In an app, what is a slider for volume? (a) data (b) an input (c) a button (d) a screen
21. 21.True or false: tapping a button is processing. (a) True (b) False
22. 22.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(4) + points(4));
23. 23.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Item → Results → Offers → Pay
    Design B: Home → Offers → Size → Search → Shop → Pay → Address (a) Design B (b) Design A
24. 24.💡 Which app idea solves this problem: a patient misses doses? (a) a lost-and-found board (b) a study-room finder (c) a bill splitter (d) a medicine reminder
25. 25.🚀 Which of these versions is the NEWEST?
    1.5.5, 1.10.2, 0.27.0, 1.6.2 (a) 0.27.0 (b) 1.6.2 (c) 1.5.5 (d) 1.10.2
26. 26.⚙️ In an app, is typing your age an input, processing or an output? (a) processing (b) input (c) output
27. 27.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 60 px tall
    Cancel button: 36 px tall
    Next button: 52 px tall
28. 28.🔢 When you make an app, which comes LAST? (a) test the app (b) build the app (c) release it (d) plan the screens
29. 29.🧰 A museum app works out the entry fee. What number does this code show?
    function fee(age) {
      if (age < 5) {
        return 0;
      }
      return 20;
    }
    show(fee(11) + fee(4));
30. 30.🧪 What is the ACTUAL result of Test 1?
    🎟️ Rule: a ticket costs 50 for children under 12, and 100 for everyone else.
    function price(age) {
      if (age <= 12) {
        return 50;
      }
      return 100;
    }
    Test 1: price(15) → expected 100
    Test 2: price(17) → expected 100
    Test 3: price(9) → expected 50
31. 31.⚙️ In an app, is working out a tip an input, processing or an output? (a) processing (b) input (c) output
32. 32.🔀 What does this sign-up rule show?
    let age = 8;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Welcome! (b) Ask a parent
33. 33.True or false: notes to read offline fits saving in the cloud. (a) False (b) True
34. 34.👆 The user taps the button 2 times. What number does the label show now?
    let lives = 1;
    button.onTap = function () {
      lives = lives + 2;
      label.text = lives;
    };
35. 35.🔐 Is this permission request fair or too much: calling app → contacts? (a) too much (b) fair
36. 36.👆 An event in an app is ___. (a) a kind of list (b) an app store (c) something that happens (d) a colour theme
37. 37.True or false: a final design shows where things go. (a) True (b) False
38. 38.🚀 Which version is newer: 3.3.0 or 3.16.0? (a) 3.16.0 (b) 3.3.0
39. 39.🔀 Why plan the user flow before building? (a) so each step is clear (b) to add more taps (c) to skip testing (d) to hide the buttons
40. 40.🔐 Which permission does a voice recorder really need? (a) contacts (b) the camera (c) location (d) the microphone

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