App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 55 · 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 is data? (a) a box to type a name (b) your saved notes (c) a switch for dark mode (d) the log-in page
2. 2.🛠️ At which stage do you talk to possible users? (a) the plan stage (b) the build stage (c) the release stage (d) the idea stage
3. 3.True or false: tap to Send is a screen. (a) True (b) False
4. 4.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
   line 1: let stars = 31; // start at 31
   line 2: stars = stars - 4; // take away 4
   line 3: stars = stars + 2; // add 2
   line 4: stars = stars + 7; // add 5
   line 5: show(stars); // show it
5. 5.🐞 Each comment says what its line SHOULD do. Which line has the bug?
   line 1: let points = 50; // start at 50
   line 2: points = points - 4; // add 4
   line 3: points = points * 2; // double it
   line 4: show(points); // show it (a) line 1 (b) line 3 (c) line 2
6. 6.📊 Survey: which problem bugs you most? Which problem should your app solve first?
   losing water bottles: 15 votes
   wasting pocket money: 12 votes
   no quiet study place: 3 votes (a) losing water bottles (b) no quiet study place (c) wasting pocket money
7. 7.📱 The word “app” is short for ___. (a) appetite (b) appointment (c) apparatus (d) application
8. 8.🧰 What number does this code show?
   function total(price, qty) {
     return price * qty;
   }
   show(total(75, 5));
9. 9.True or false: a voice recorder needs the microphone. (a) False (b) True
10. 10.👥 A library app has 110 readers, 30 librarians and 300 volunteers as users. How many users does it have in all?
11. 11.🔢 In a photo-post flow, what comes right after “add a filter”? (a) take the photo (b) open the camera screen (c) write a caption (d) post the photo
12. 12.🔀 In a good flow, each screen should lead to ___. (a) a dead end (b) a random page (c) a clear next step (d) the same screen
13. 13.🧪 What is the ACTUAL result of Test 3?
    🎟️ 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(13) → expected 100
    Test 2: price(4) → expected 50
    Test 3: price(15) → expected 100
14. 14.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 48 px tall
    Save button: 64 px tall
    Start button: 60 px tall
15. 15.🔀 What does if / else let an app do? (a) draw a screen (b) pick one of two actions (c) repeat forever (d) save a photo
16. 16.🔐 Which permission does a barcode scanner really need? (a) the camera (b) location (c) the microphone (d) contacts
17. 17.Which of these is an input? (a) the game-over page (b) a box to type a name (c) tap to Save (d) today’s step count
18. 18.👥 A school app has 125 students, 90 teachers and 155 parents as users. Which user group is the biggest? (a) students (b) parents (c) teachers
19. 19.✏️ A box with a cross in a wireframe usually means ___. (a) an error (b) a closed app (c) a picture goes here (d) delete this
20. 20.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 36 px tall
    Cancel button: 36 px tall
    Back button: 56 px tall
21. 21.🔀 What number does this shop app show?
    let total = 200;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
22. 22.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
23. 23.🔢 When you make an app, which comes first: “get an idea” or “build the app”? (a) get an idea (b) build the app
24. 24.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pay → Confirm
    Design B: Home → Pay → Offers → Results (a) Design B (b) Design A
25. 25.💾 What number does this code show?
    let notes = ["Sports", "Art", "Science"];
    notes.push("Music");
    notes.push("Maths");
    show(notes.length);
26. 26.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
27. 27.Which of these is a button? (a) the game-over page (b) the settings page (c) a date picker (d) tap to Start
28. 28.🧪 Who else should try an app before release? (a) nobody (b) the app icon (c) real users (d) only the coder
29. 29.💾 Which can hold many values in order? (a) a switch (b) a button (c) a single number (d) a list
30. 30.🧩 Which input is best for turning something ON or OFF? (a) a title (b) a text box (c) a switch (d) a slider
31. 31.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 40 px tall
    Next button: 64 px tall
    Help button: 36 px tall
    Done button: 52 px tall
32. 32.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
33. 33.🔢 After an app is released, which comes first: “read user reviews” or “test it again”? (a) read user reviews (b) test it again
34. 34.🔢 In a quiz-app flow, which comes FIRST? (a) pick an answer (b) tap “Start quiz” (c) see if it is right (d) read a question
35. 35.🔍 Which is the odd one out? (a) the theme colours (b) the font size (c) the screen layout (d) how many taps it takes
36. 36.👥 A clinic app has 205 patients, 140 doctors and 120 nurses as users. Which user group is the biggest? (a) patients (b) nurses (c) doctors
37. 37.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
38. 38.🚀 Your app is at version 2.0.7. The next release fixes a small bug. What is its version number? (a) 2.0.8 (b) 2.1.0 (c) 3.0.0 (d) 2.1.7
39. 39.🎨 Who should you test the UX with? (a) the app icon (b) only yourself (c) real users (d) nobody
40. 40.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(3) + points(4));

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