App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 657 · 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.💾 Data saved only on the phone is lost when ___. (a) the screen turns off (b) the phone is lost (c) you send a message (d) the app is closed
2. 2.🧪 What is the ACTUAL result of Test 3?
   🚚 Rule: delivery is free (0) when the order is 500 or more; otherwise it costs 40.
   function delivery(total) {
     if (total > 500) {
       return 0;
     }
     return 40;
   }
   Test 1: delivery(750) → expected 0
   Test 2: delivery(500) → expected 0
   Test 3: delivery(450) → expected 40
3. 3.🧰 In function tip(bill), what is bill? (a) a parameter (b) a loop (c) a screen (d) an event
4. 4.🎯 Which app would help this user most: a teen whose money runs out by Friday? (a) a homework planner (b) a bus tracker (c) a pocket-money tracker (d) a big-text reader
5. 5.🔢 In a quiz-app flow, which comes LAST? (a) pick an answer (b) tap “Start quiz” (c) see the final score (d) read a question
6. 6.🔀 What does if / else let an app do? (a) pick one of two actions (b) draw a screen (c) save a photo (d) repeat forever
7. 7.Which of these is true of the back button? (a) shows 3 to 5 icons (b) switches main sections (c) undoes one move (d) hides extra links
8. 8.True or false: tap to Save is a button. (a) False (b) True
9. 9.True or false: a homework planner is the best fit for a student who keeps forgetting due dates. (a) False (b) True
10. 10.🔐 Which permission does a party-invite app for friends really need? (a) contacts (b) the camera (c) the microphone (d) location
11. 11.💡 Which app idea solves this problem: students cannot find a quiet room? (a) a bill splitter (b) a homework planner (c) a lost-and-found board (d) a study-room finder
12. 12.🔍 Which is the odd one out? (a) a unit converter (b) a calculator (c) an alarm clock (d) a step counter
13. 13.♿ What does a screen reader do? (a) reads the screen aloud (b) plays music (c) takes photos (d) makes text tiny
14. 14.🔍 Which is the odd one out? (a) adding up a bill (b) sorting the scores (c) speaking a command (d) working out a tip
15. 15.🔀 What number does this shop app show?
    let total = 320;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
16. 16.🧪 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(7) → expected Pass
    Test 3: result(6) → expected Pass
17. 17.🔍 Which is the odd one out? (a) the screen layout (b) the theme colours (c) how easy sign-up is (d) the button colours
18. 18.🧭 Which part of navigation switches main sections? (a) a tab bar (b) the back button (c) a menu button
19. 19.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Help page”
    2. tap the Search tab
    3. open “Edit photo”
    4. open “Help page”
    Which screen are you on now? (a) Home (b) Help page (c) Edit photo (d) Search
20. 20.🧰 A museum app works out the entry fee. What number does this code show?
    function fee(age) {
      if (age < 5) {
        return 0;
      }
      return 50;
    }
    show(fee(1) + fee(12));
21. 21.Which of these requests is fair? (a) timer → your photos (b) map app → location (c) torch → contacts (d) quiz app → microphone
22. 22.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) pie-chart colours (b) export to a file (c) show the balance (d) savings stickers
23. 23.🔐 Which permission does a barcode scanner really need? (a) location (b) the microphone (c) the camera (d) contacts
24. 24.True or false: a library due-date alert solves no real problem. (a) False (b) True
25. 25.True or false: a water reminder is the best fit for a teen learning to make snacks. (a) False (b) True
26. 26.🧩 Which part lets the user give the app information? (a) an icon (b) a logo (c) a title (d) an input
27. 27.👆 The user taps the button 1 times. What number does the label show now?
    let likes = 0;
    button.onTap = function () {
      if (likes < 5) {
        likes = likes + 1;
      }
      label.text = likes;
    };
28. 28.⚙️ Which line does the processing (works out the answer)?
    line 1: let bill = 36; // typed by the user
    line 2: let friends = 2; // typed by the user
    line 3: let share = bill / friends;
    line 4: show(share); (a) line 3 (b) line 2 (c) line 4 (d) line 1
29. 29.🎯 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
30. 30.True or false: a weather-near-me app needs your location. (a) False (b) True
31. 31.🧰 A museum app works out the entry fee. What number does this code show?
    function fee(age) {
      if (age < 5) {
        return 0;
      }
      return 60;
    }
    show(fee(4) + fee(1));
32. 32.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) on the phone (b) in the cloud
33. 33.✏️ What is a wireframe? (a) a simple screen sketch (b) a charging cable (c) the finished app (d) a type of password
34. 34.Which of these is true of a wireframe? (a) uses the final pictures (b) has the real colours (c) shows where things go (d) shows the real fonts
35. 35.🗒️ When should nice-to-have features be built? (a) after the must-haves (b) on day one (c) never (d) before anything
36. 36.Which of these happens at the idea stage? (a) share the download link (b) spot a problem to solve (c) pick the features (d) write the store text
37. 37.👆 The user taps the button 2 times. What number does the label show now?
    let likes = 0;
    button.onTap = function () {
      if (likes < 2) {
        likes = likes + 1;
      }
      label.text = likes;
    };
38. 38.Which colour pair is easy to read? (a) pale pink on white (b) light grey on white (c) dark blue on white (d) yellow on white
39. 39.Which of these is true of a menu button? (a) undoes one move (b) goes to the last screen (c) switches main sections (d) opens a list of pages
40. 40.🔀 What number does this shop app show?
    let total = 620;
    if (total > 500) {
      total = total - 50;
    }
    show(total);

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