App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 450 · 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 code show? (Positions start at 0.)
   let songs = ["Sunrise", "Kites", "Ocean", "Stars", "Rain"];
   show(songs[1]); (a) Kites (b) Sunrise (c) Stars (d) Ocean
2. 2.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
   [title] Add Homework
   [text box] City
   [button] Cancel
   [switch] Show hints
3. 3.🚀 Which of these versions is the OLDEST?
   1.5.2, 1.4.5, 1.18.8, 0.24.4 (a) 1.5.2 (b) 0.24.4 (c) 1.18.8 (d) 1.4.5
4. 4.🔀 Which badge does this quiz app show?
   let marks = 71;
   if (marks >= 80) {
     show("Gold");
   } else if (marks >= 50) {
     show("Silver");
   } else {
     show("Bronze");
   } (a) Bronze (b) Silver (c) Gold
5. 5.🚀 Your app is at version 1.1.2. The next release adds a new feature. What is its version number? (a) 1.1.3 (b) 1.2.2 (c) 1.2.0 (d) 2.0.0
6. 6.🛠️ At which stage do you draw the user flow? (a) the idea stage (b) the plan stage (c) the test stage (d) the release stage
7. 7.🔁 What number does this code show?
   let runs = [17, 58, 70, 39];
   let count = 0;
   for (let i = 0; i < runs.length; i++) {
     if (runs[i] >= 70) {
       count = count + 1;
     }
   }
   show(count);
8. 8.🔍 Which is the odd one out? (a) a beep sound (b) a buzz (vibration) (c) a pop-up message (d) typing your age
9. 9.🧪 How many of these test cases pass?
   🎟️ Rule: a ticket costs 50 for children under 9, and 100 for everyone else.
   function price(age) {
     if (age < 9) {
       return 50;
     }
     return 100;
   }
   Test 1: price(10) → expected 100
   Test 2: price(5) → expected 50
   Test 3: price(9) → expected 100
10. 10.🔁 What number does this code show?
    let scores = [20, 13, 42, 86];
    let count = 0;
    for (let i = 0; i < scores.length; i++) {
      if (scores[i] >= 50) {
        count = count + 1;
      }
    }
    show(count);
11. 11.🔀 What does this battery rule show?
    let battery = 63;
    if (battery < 20) {
      show("Low battery");
    } else {
      show("Battery OK");
    } (a) Low battery (b) Battery OK
12. 12.🖼️ In this wireframe (top to bottom), what is right below the search box?
    [ search box ]
    [ Save button ]
    [ Add button ]
    [ menu icon ] (a) Add button (b) menu icon (c) Save button
13. 13.💡 Which app idea solves this problem: the library is always full? (a) a lost-and-found board (b) a study-room finder (c) a medicine reminder (d) a homework planner
14. 14.🔢 In a food-order flow, which comes LAST? (a) open the menu (b) add it to the cart (c) track the order (d) pick a dish
15. 15.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Shop → Menu → Pay
    Design B: Home → Search → Cart (a) Design A (b) Design B
16. 16.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] New Note
    [text box] Email
    [button] Help
    [slider] Text size
    [text box] Notes
    [button] Cancel
    [button] Next
17. 17.🔀 When does the else part run? (a) when the test is true (b) when the test is false (c) always (d) never
18. 18.📱 Which one has a web address: an app or a website? (a) an app (b) a website
19. 19.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
20. 20.Which of these is true of a tab bar? (a) opens a list of pages (b) switches main sections (c) undoes one move (d) goes to the last screen
21. 21.🎯 Which app would help this user most: a student who often misses the school bus? (a) a homework planner (b) a big-text reader (c) a bus tracker (d) a water reminder
22. 22.🎯 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 homework planner
23. 23.Which of these is true of an app? (a) has a web address (b) is installed on a phone (c) opens from a link (d) needs no installing
24. 24.💡 Which is a problem statement? (a) “Make it fast” (b) “Use blue buttons” (c) “Add a logo” (d) “Kids forget homework”
25. 25.⚙️ What number does this app show?
    let bill = 260; // typed by the user
    let friends = 4; // typed by the user
    let share = bill / friends;
    show(share);
26. 26.🧪 A test fails when ___. (a) the app is new (b) the font is big (c) both are the same (d) actual is not expected
27. 27.Which of these is true of a final design? (a) shows where things go (b) shows the real fonts (c) is a quick sketch (d) uses plain grey boxes
28. 28.⚙️ What number does this app show?
    let bill = 320; // typed by the user
    let friends = 5; // typed by the user
    let share = bill / friends;
    show(share);
29. 29.🔀 What number does this shop app show?
    let total = 460;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
30. 30.🚀 In version 2.5.1, which number is the major version? (a) 1 (b) 5 (c) 2 (d) 251
31. 31.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
32. 32.🌐 Which program do you need to open a website? (a) an app store (b) a camera app (c) a calculator (d) a web browser
33. 33.True or false: space between buttons is poor button design. (a) False (b) True
34. 34.🎯 Which app would help this user most: a gamer who forgets to drink? (a) a recipe finder (b) a water reminder (c) a bus tracker (d) a homework planner
35. 35.🧪 A test case is an input together with its ___. (a) expected result (b) screen colour (c) app icon (d) font size
36. 36.🔍 Which is the odd one out? (a) sketch the screens (b) talk to possible users (c) draw the user flow (d) pick the features
37. 37.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Friend list”
    2. open “Badges”
    3. open “Video”
    4. tap Back
    How many times must you tap Back to reach the main screen of this tab?
38. 38.True or false: a barcode scanner needs the microphone. (a) False (b) True
39. 39.🎯 What is a user need? (a) a type of button (b) a problem a user has (c) a colour theme (d) a phone setting
40. 40.True or false: an app opens from a link. (a) True (b) False

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