App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 142 · 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 is the odd one out? (a) tiny tap areas (b) colour as the only clue (c) icons with no labels (d) text that can grow
2. 2.🔍 Which is the odd one out? (a) typing your age (b) taking a photo (c) speaking a command (d) adding up a bill
3. 3.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
4. 4.🐞 This code has a bug. What number does it ACTUALLY show?
   line 1: let points = 41; // start at 40
   line 2: points = points - 4; // take away 4
   line 3: points = points - 5; // take away 5
   line 4: show(points); // show it
5. 5.True or false: a barcode scanner needs the microphone. (a) True (b) False
6. 6.True or false: notes to read offline fits saving on the phone. (a) True (b) False
7. 7.📱 Which one opens in a web browser: an app or a website? (a) a website (b) an app
8. 8.🔐 Is this permission request fair or too much: calling app → contacts? (a) fair (b) too much
9. 9.🐞 Each comment says what its line SHOULD do. Which line has the bug?
   line 1: let lives = 31; // start at 30
   line 2: lives = lives + 3; // add 3
   line 3: lives = lives * 2; // double it
   line 4: show(lives); // show it (a) line 1 (b) line 3 (c) line 2
10. 10.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(50, 6));
11. 11.True or false: you pick the features at the idea stage. (a) False (b) True
12. 12.Which of these is an input? (a) a buzz (vibration) (b) adding up a bill (c) a pop-up message (d) typing your age
13. 13.🚀 Which of these versions is the NEWEST?
    0.25.2, 1.18.3, 1.2.7, 1.9.1 (a) 1.2.7 (b) 1.9.1 (c) 1.18.3 (d) 0.25.2
14. 14.Which of these helps everyone use the app? (a) icons with no labels (b) fast-flashing lights (c) tiny tap areas (d) big touch targets
15. 15.🧰 What number does this code show?
    function double(n) {
      return n * 2;
    }
    show(double(40));
16. 16.True or false: a spelling coach is a health app. (a) False (b) True
17. 17.📅 An app team plans for 5 days, builds for 5 days, tests for 3 days and releases on 1 more day. Planning starts on day 1. On which day does building finish?
18. 18.True or false: a final design uses plain grey boxes. (a) False (b) True
19. 19.💾 Which can hold many values in order? (a) a list (b) a switch (c) a single number (d) a button
20. 20.True or false: a bus tracker needs your location. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) the button colours (b) how easy sign-up is (c) the icon shapes (d) the screen layout
22. 22.👆 The user taps the button 2 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
23. 23.True or false: an app needs no installing. (a) True (b) False
24. 24.🗒️ Version 1 of a homework planner must be ready in 15 days. How many days are left for extras after the must-haves?
    add a homework task: 1 days
    set a due date: 3 days
    see tasks by day: 5 days
25. 25.🧪 One test case fails. Which one?
    🎟️ Rule: a ticket costs 50 for children under 11, and 100 for everyone else.
    function price(age) {
      if (age <= 11) {
        return 50;
      }
      return 100;
    }
    Test 1: price(12) → expected 100
    Test 2: price(11) → expected 100
    Test 3: price(9) → expected 50 (a) Test 2 (b) Test 3 (c) Test 1
26. 26.🎯 Is this a user need or a feature: “I forget my homework”? (a) a user need (b) a feature
27. 27.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pens → Size → Shop
    Design B: Home → Menu → Pens → Size → Results → Cart → Item
28. 28.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) so anyone can follow (d) to slow them down
29. 29.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] Settings
    [text box] Email
    [button] Start
30. 30.🧪 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(7) → expected Pass
    Test 2: result(3) → expected Try again
    Test 3: result(5) → expected Pass
31. 31.True or false: your last game level fits saving in the cloud. (a) True (b) False
32. 32.Which of these is a user need? (a) a search bar (b) a reminder alarm (c) a share button (d) “I forget my homework”
33. 33.Which of these is about UX (the experience)? (a) the screen layout (b) the button colours (c) how users feel after (d) the theme colours
34. 34.🔢 When you make an app, which comes first: “release it” or “build the app”? (a) release it (b) build the app
35. 35.💾 Where should the app save photos on two devices: on the phone or in the cloud? (a) on the phone (b) in the cloud
36. 36.🧰 What does this code show?
    function greet(name) {
      return "Welcome, " + name + "!";
    }
    show(greet("Riya")); (a) Welcome, Riya! (b) Welcome, name! (c) Riya (d) greet
37. 37.🔍 Which is the odd one out? (a) write down the bugs (b) share the download link (c) write the store text (d) put it on an app store
38. 38.🖼️ How many parts (boxes) does this wireframe have?
    [ top bar ]
    [ tab bar ]
    [ Save button ]
    [ search box ]
    [ big picture ]
39. 39.🗒️ You are planning version 1 of a water reminder. Which feature is a MUST-HAVE? (a) water animations (b) custom alert sounds (c) set a reminder time (d) share your streak
40. 40.🔁 What is the LAST line this code shows?
    let names = ["Meera", "Zoya", "Kabir"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Zoya (b) Hi, Kabir (c) Hi, Meera

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