App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 42 · 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.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) share tasks to friends (b) earn stickers (c) add a homework task (d) pick a theme colour
2. 2.👆 The user taps the button 6 times. What number does the label show now?
   let likes = 0;
   button.onTap = function () {
     if (likes < 2) {
       likes = likes + 1;
     }
     label.text = likes;
   };
3. 3.🚀 A privacy policy tells users ___. (a) the app’s price (b) the screen size (c) the app’s colours (d) what data is collected
4. 4.True or false: a wireframe uses the final pictures. (a) True (b) False
5. 5.🔀 What does this sign-up rule show?
   let age = 9;
   if (age >= 13) {
     show("Welcome!");
   } else {
     show("Ask a parent");
   } (a) Ask a parent (b) Welcome!
6. 6.🧪 What is the actual result of a test? (a) the test’s number (b) what we hope for (c) what the app really does (d) the app’s name
7. 7.True or false: whether users get lost is about UX (the experience). (a) False (b) True
8. 8.Which of these is a button? (a) tap to go Next (b) today’s step count (c) a date picker (d) the home page of an app
9. 9.🎨 Is this about UI or UX: how easy sign-up is? (a) UI (b) UX
10. 10.True or false: the user presses Save is a text event. (a) True (b) False
11. 11.📱 Where do people usually download phone apps from? (a) a web server (b) a printer (c) a charger (d) an app store
12. 12.Which of these is true of an app? (a) comes from an app store (b) opens from a link (c) has a web address (d) needs no installing
13. 13.🔢 After an app is released, which comes first: “list what to fix” or “fix and improve”? (a) fix and improve (b) list what to fix
14. 14.👆 Two designs for the same task (each arrow is one tap). How many taps does the shorter design save?
    Design A: Home → Address → Item
    Design B: Home → Cart → Menu → Search → Size
15. 15.🔁 list.length tells you ___. (a) how many items it has (b) the biggest item (c) the first item (d) the last item
16. 16.🧰 What number does this code show?
    function triple(n) {
      return n * 3;
    }
    show(triple(12));
17. 17.🎯 Is this a user need or a feature: “I forget my homework”? (a) a user need (b) a feature
18. 18.True or false: the app starts up is a text event. (a) True (b) False
19. 19.🔢 In a food-order flow, which comes first: “track the order” or “check the cart”? (a) track the order (b) check the cart
20. 20.🧪 One test case fails. Which one?
    📝 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(5) → expected Pass
    Test 3: result(2) → expected Try again (a) Test 3 (b) Test 1 (c) Test 2
21. 21.Which of these is a user need? (a) “What should I cook?” (b) a dark mode switch (c) a reminder alarm (d) a search bar
22. 22.🧰 What number does this code show?
    function double(n) {
      return n * 2;
    }
    show(double(28));
23. 23.🔁 What is the LAST line this code shows?
    let names = ["Aman", "Riya", "Kabir", "Meera", "Zoya"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Zoya (b) Hi, Aman (c) Hi, Riya (d) Hi, Kabir
24. 24.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a final design (b) a wireframe
25. 25.🎯 What is the best first step to learn what users need? (a) pick the colours (b) write the code (c) guess on your own (d) ask and watch users
26. 26.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(4) + points(1));
27. 27.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Match report”
    2. tap Back
    3. open “Video”
    4. tap the Profile tab
    5. open “Video”
    Which screen are you on now? (a) Match report (b) Video (c) Search (d) Home
28. 28.🔀 What does >= mean? (a) less than (b) smaller or equal (c) not equal (d) greater than or equal
29. 29.⚙️ Which line does the processing (works out the answer)?
    line 1: let km = 13; // typed by the user
    line 2: let metres = km * 1000;
    line 3: show(metres); (a) line 2 (b) line 1 (c) line 3
30. 30.🧩 What do we call one full page of an app? (a) a screen (b) a battery (c) a cable (d) a variable
31. 31.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 40 px tall
    Start button: 32 px tall
    Done button: 64 px tall
    Back button: 64 px tall
32. 32.🔢 In a quiz-app flow, what comes right after “pick an answer”? (a) read a question (b) see the final score (c) see if it is right (d) tap “Start quiz”
33. 33.📊 Survey: which problem bugs you most? How many students voted in all?
    forgetting homework: 23 votes
    missing the bus: 8 votes
    forgetting birthdays: 3 votes
34. 34.💾 What number does this code show?
    let score = 5;
    score = score - 1;
    score = score + 3;
    show(score);
35. 35.👆 What kind of event is this: a 5-minute alarm ends? (a) a tap event (b) a load event (c) a timer event (d) a text event
36. 36.📱 Which one has a web address: an app or a website? (a) an app (b) a website
37. 37.Which of these is a user need? (a) a share button (b) “Small text is hard” (c) a reminder alarm (d) a dark mode switch
38. 38.🧰 What does this code show?
    function greet(name) {
      return "Hello, " + name + "!";
    }
    show(greet("Kabir")); (a) greet (b) Kabir (c) Hello, Kabir! (d) Hello, name!
39. 39.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(45, 2));
40. 40.True or false: photos on two devices fits saving in the cloud. (a) False (b) True

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