App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 619 · 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.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. open “Score card”
   2. open “Map”
   3. tap Back
   Which screen are you on now? (a) Search (b) Home (c) Score card (d) Map
2. 2.👆 The user taps the button 6 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
3. 3.📊 Survey: which problem bugs you most? How many students voted in all?
   losing water bottles: 5 votes
   no quiet study place: 20 votes
   wasting pocket money: 4 votes
4. 4.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) export to a file (b) add money received (c) pie-chart colours (d) savings stickers
5. 5.🔀 What is a user flow? (a) a type of font (b) the path through screens (c) a colour theme (d) a charging cable
6. 6.🔁 What number does this code show?
   let marks = [13, 5, 5, 3, 15];
   let best = 0;
   for (let i = 0; i < marks.length; i++) {
     if (marks[i] > best) {
       best = marks[i];
     }
   }
   show(best);
7. 7.🎯 Which app would help this user most: a teen learning to make snacks? (a) a pocket-money tracker (b) a homework planner (c) a recipe finder (d) a water reminder
8. 8.True or false: the theme colours is about UX (the experience). (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) how many taps it takes (b) the font size (c) the icon shapes (d) the theme colours
10. 10.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a final design (b) a wireframe
11. 11.🐞 Each comment says what its line SHOULD do. Which line has the bug?
    line 1: let stars = 40; // start at 40
    line 2: stars = stars - 4; // take away 4
    line 3: stars = stars - 3; // add 3
    line 4: show(stars); // show it (a) line 1 (b) line 2 (c) line 3
12. 12.🔢 When you make an app, which comes FIRST? (a) build the app (b) test the app (c) get an idea (d) plan the screens
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 16 px
    Label: 13 px
    Caption: 15 px
14. 14.✏️ Why draw a wireframe before coding? (a) it saves data (b) changes are quick (c) it adds colours (d) it runs the app
15. 15.True or false: tap to go Next is a button. (a) False (b) True
16. 16.🧪 What is the ACTUAL result of Test 2?
    🎟️ Rule: a ticket costs 50 for children under 10, and 100 for everyone else.
    function price(age) {
      if (age < 10) {
        return 50;
      }
      return 100;
    }
    Test 1: price(16) → expected 100
    Test 2: price(15) → expected 100
    Test 3: price(9) → expected 50
17. 17.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(100, 4));
18. 18.Which of these requests asks for too much? (a) torch → contacts (b) calling app → contacts (c) map app → location (d) voice notes → microphone
19. 19.🔀 When does the else part run? (a) always (b) never (c) when the test is false (d) when the test is true
20. 20.🧪 One test case fails. Which one?
    🎟️ Rule: a ticket costs 50 for children under 13, and 100 for everyone else.
    function price(age) {
      if (age <= 13) {
        return 50;
      }
      return 100;
    }
    Test 1: price(14) → expected 100
    Test 2: price(11) → expected 50
    Test 3: price(13) → expected 100 (a) Test 2 (b) Test 1 (c) Test 3
21. 21.Which of these happens at the plan stage? (a) add the buttons (b) share the download link (c) write the store text (d) sketch the screens
22. 22.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) sudden loud sounds (d) labels on every icon
23. 23.🎯 Which app would help this user most: a reader who finds small print hard? (a) a bus tracker (b) a homework planner (c) a water reminder (d) a big-text reader
24. 24.📱 Which one has a home-screen icon: an app or a website? (a) an app (b) a website
25. 25.🔢 In a food-order flow, what comes right after “open the menu”? (a) track the order (b) pick a dish (c) add it to the cart (d) pay for the order
26. 26.🔍 Which is the odd one out? (a) a times-table quiz (b) a spelling coach (c) a sleep tracker (d) a flashcard trainer
27. 27.💡 Which app idea solves this problem: a patient misses doses? (a) a lost-and-found board (b) a bill splitter (c) a medicine reminder (d) a study-room finder
28. 28.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    missing the bus: 13 votes
    forgetting homework: 25 votes
    no quiet study place: 16 votes (a) no quiet study place (b) missing the bus (c) forgetting homework
29. 29.Which of these makes the app harder to use? (a) captions on videos (b) strong colour contrast (c) icons with no labels (d) big touch targets
30. 30.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    forgetting birthdays: 21 votes
    wasting pocket money: 10 votes
    forgetting homework: 3 votes (a) forgetting birthdays (b) forgetting homework (c) wasting pocket money
31. 31.🐞 This code has a bug. What number does it ACTUALLY show?
    line 1: let lives = 33; // start at 32
    line 2: lives = lives * 2; // double it
    line 3: lives = lives - 5; // take away 5
    line 4: show(lives); // show it
32. 32.🔀 What does this sign-up rule show?
    let age = 14;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Ask a parent (b) Welcome!
33. 33.🔐 Is this permission request fair or too much: timer → your photos? (a) fair (b) too much
34. 34.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) an avatar shop (b) show a question (c) background music (d) confetti effects
35. 35.🚀 Your app is at version 1.11.3. The next release fixes a small bug. What is its version number? (a) 1.12.3 (b) 2.0.0 (c) 1.12.0 (d) 1.11.4
36. 36.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Pay → Offers
    Design B: Home → Results → Shop → Cart → Menu
37. 37.🧪 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(4) → expected Try again
    Test 2: result(6) → expected Pass
    Test 3: result(5) → expected Pass
38. 38.🗒️ Version 1 of a pocket-money tracker must be ready in 12 days. How many days are left for extras after the must-haves?
    add money received: 1 days
    add money spent: 1 days
    show the balance: 5 days
39. 39.True or false: your high score is a screen. (a) False (b) True
40. 40.Which of these is a feature? (a) “I keep missing the bus” (b) “I forget my homework” (c) “Small text is hard” (d) a reminder alarm

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