App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 540 · 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.True or false: you write down the bugs at the plan stage. (a) True (b) False
2. 2.🧰 What number does this code show?
   function points(stars) {
     return stars * 10 + 5;
   }
   show(points(2) + points(5));
3. 3.🧰 What number does this code show?
   function triple(n) {
     return n * 3;
   }
   show(triple(29));
4. 4.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
   Design A: Home → Shop → Pens → Search
   Design B: Home → Pens → Cart → Pay → Size → Confirm
5. 5.🖼️ How many parts (boxes) does this wireframe have?
   [ top bar ]
   [ title text ]
   [ big picture ]
   [ list of items ]
6. 6.Which of these is true of an app? (a) comes from an app store (b) opens in a web browser (c) opens from a link (d) needs no installing
7. 7.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
8. 8.🔢 In a sign-up flow, what comes right after “tap “Sign up””? (a) see the home screen (b) make a password (c) type name and email (d) enter the code sent
9. 9.👥 A clinic app has 115 patients, 20 doctors and 290 nurses as users. How many users does it have in all?
10. 10.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(3) + points(1));
11. 11.🚀 Which version is newer: 2.2.3 or 2.15.2? (a) 2.15.2 (b) 2.2.3
12. 12.📅 An app team plans for 3 days, builds for 4 days, tests for 2 days and releases on 1 more day. How many days does the whole project take?
13. 13.👆 The user types Arjun in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Well done, " + nameBox.text + "!";
    }; (a) Well done, nameBox.text! (b) Arjun (c) Well done, Arjun! (d) Well done!
14. 14.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) share tasks to friends (b) see tasks by day (c) earn stickers (d) pick a theme colour
15. 15.True or false: a unit converter is a tool app. (a) True (b) False
16. 16.💾 Where should the app save your last game level: on the phone or in the cloud? (a) in the cloud (b) on the phone
17. 17.Which of these requests is fair? (a) voice notes → microphone (b) quiz app → microphone (c) calculator → location (d) torch → contacts
18. 18.🧪 Values right at a limit, like age 12 for “under 12”, are called ___. (a) easy cases (b) old cases (c) edge cases (d) phone cases
19. 19.True or false: you write the code at the build stage. (a) False (b) True
20. 20.Which of these is processing? (a) a buzz (vibration) (b) adding up a bill (c) a beep sound (d) tapping a button
21. 21.🌗 Is red on green easy or hard to read on a button? (a) hard to read (b) easy to read
22. 22.🔢 When you make an app, which comes LAST? (a) build the app (b) release it (c) plan the screens (d) get an idea
23. 23.🔍 Which is the odd one out? (a) a sleep tracker (b) a unit converter (c) an alarm clock (d) a calculator
24. 24.🔢 In a sign-up flow, what comes right after “make a password”? (a) enter the code sent (b) tap “Sign up” (c) type name and email (d) open the app
25. 25.🛠️ At which stage do you sketch the screens? (a) the test stage (b) the plan stage (c) the release stage (d) the build stage
26. 26.🔢 In a sign-up flow, which comes LAST? (a) open the app (b) enter the code sent (c) make a password (d) see the home screen
27. 27.True or false: a shared to-do list fits saving in the cloud. (a) True (b) False
28. 28.🧩 In an app, what is a box to type a name? (a) a button (b) a screen (c) data (d) an input
29. 29.True or false: photos on two devices fits saving on the phone. (a) False (b) True
30. 30.🔁 What number does this code show?
    let scores = [52, 37, 64, 48];
    let count = 0;
    for (let i = 0; i < scores.length; i++) {
      if (scores[i] >= 60) {
        count = count + 1;
      }
    }
    show(count);
31. 31.🗒️ Version 1 of a bus tracker must be ready in 17 days. How many days are left for extras after the must-haves?
    see where the bus is: 2 days
    show arrival time: 4 days
    pick your bus stop: 5 days
32. 32.Which of these happens at the plan stage? (a) write the store text (b) pick the features (c) list what users need (d) write the code
33. 33.🔀 Which badge does this quiz app show?
    let marks = 38;
    if (marks >= 80) {
      show("Gold");
    } else if (marks >= 50) {
      show("Silver");
    } else {
      show("Bronze");
    } (a) Gold (b) Silver (c) Bronze
34. 34.💾 What does this code show? (Positions start at 0.)
    let friends = ["Aman", "Arjun", "Kabir", "Meera", "Zoya"];
    show(friends[0]); (a) Kabir (b) Meera (c) Aman (d) Arjun
35. 35.🎨 Is this about UI or UX: the font size? (a) UX (b) UI
36. 36.🐞 After fixing a bug you should ___. (a) delete the test (b) never test (c) release at once (d) test it again
37. 37.True or false: working out a tip is processing. (a) True (b) False
38. 38.✏️ Why draw a wireframe before coding? (a) it adds colours (b) it runs the app (c) it saves data (d) changes are quick
39. 39.⚙️ What number does this app show?
    let price = 40; // typed by the user
    let qty = 4; // typed by the user
    let total = price * qty;
    show(total);
40. 40.Which of these is an input? (a) the settings page (b) tap to Send (c) a date picker (d) the game-over page

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