App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 856 · 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.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ title text ]
   [ top bar ]
   [ menu icon ]
   [ search box ]
   [ Save button ]
   [ Add button ] (a) top bar (b) search box (c) Add button (d) menu icon
2. 2.🔍 Which is the odd one out? (a) the font size (b) how fast a task is done (c) how many taps it takes (d) how users feel after
3. 3.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
4. 4.🛠️ At which stage do you list what users need? (a) the idea stage (b) the plan stage (c) the test stage (d) the build stage
5. 5.🔁 What is the LAST line this code shows?
   let names = ["Meera", "Zoya", "Kabir"];
   for (let i = 0; i < names.length; i++) {
     show("Hi, " + names[i]);
   } (a) Hi, Zoya (b) Hi, Meera (c) Hi, Kabir
6. 6.True or false: an app that just says hi solves a real problem. (a) False (b) True
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 25 px
   Menu: 22 px
   Footer: 10 px
   Hint: 23 px
   Caption: 23 px (a) Title (b) Footer (c) Hint (d) Menu
8. 8.🎯 Is this a user need or a feature: a search bar? (a) a user need (b) a feature
9. 9.Which of these is a user need? (a) “I forget my homework” (b) a dark mode switch (c) a share button (d) a reminder alarm
10. 10.💾 Where should the app save your last game level: on the phone or in the cloud? (a) on the phone (b) in the cloud
11. 11.📅 An app team plans for 2 days, builds for 11 days, tests for 3 days and releases on 1 more day. How many more days does building take than testing?
12. 12.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Pens → Item → Results → Cart
    Design B: Home → Confirm → Menu → Shop (a) Design B (b) Design A
13. 13.Which of these is an input? (a) sorting the scores (b) a buzz (vibration) (c) checking a password (d) typing your age
14. 14.Which of these requests asks for too much? (a) camera app → camera (b) quiz app → microphone (c) calling app → contacts (d) map app → location
15. 15.🗒️ You are planning version 1 of a water reminder. Which feature is a MUST-HAVE? (a) water animations (b) share your streak (c) set a reminder time (d) custom alert sounds
16. 16.True or false: how easy sign-up is is about UX (the experience). (a) False (b) True
17. 17.🗒️ You are planning version 1 of a water reminder. Which feature is a MUST-HAVE? (a) log a glass of water (b) share your streak (c) custom alert sounds (d) water animations
18. 18.🔢 In a food-order flow, which comes LAST? (a) open the menu (b) track the order (c) add it to the cart (d) pick a dish
19. 19.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    losing water bottles: 11 votes
    wasting pocket money: 10 votes
    missing the bus: 18 votes (a) missing the bus (b) losing water bottles (c) wasting pocket money
20. 20.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 68 px tall
    Help button: 24 px tall
    Done button: 52 px tall
    Save button: 64 px tall (a) Done (b) Save (c) Next (d) Help
21. 21.💡 Does an app idea like a page of random dots solve a real problem? (a) Yes (b) No
22. 22.♿ Why add captions to videos? (a) to add colour (b) to slow them down (c) so anyone can follow (d) to hide the sound
23. 23.👆 Which of these is an event? (a) the font size (b) the icon colour (c) a list of names (d) the user taps a button
24. 24.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
25. 25.🔐 Which permission does a birthday list of friends really need? (a) the camera (b) the microphone (c) location (d) contacts
26. 26.👆 The user taps the button 6 times. What number does the label show now?
    let points = 3;
    button.onTap = function () {
      points = points + 4;
      label.text = points;
    };
27. 27.True or false: a buzz (vibration) is an output. (a) False (b) True
28. 28.👆 The user types Aman 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! (b) Well done, Aman! (c) Well done, nameBox.text! (d) Aman
29. 29.🔐 Which permission does a speak-to-type notes app really need? (a) location (b) the microphone (c) the camera (d) contacts
30. 30.True or false: a torch is a learning app. (a) True (b) False
31. 31.Which of these makes the app harder to use? (a) text that can grow (b) strong colour contrast (c) captions on videos (d) sudden loud sounds
32. 32.🐞 This code has a bug. What number does it ACTUALLY show?
    line 1: let coins = 45; // start at 45
    line 2: coins = coins * 3; // double it
    line 3: coins = coins + 6; // add 6
    line 4: show(coins); // show it
33. 33.🧪 What is the actual result of a test? (a) what we hope for (b) the test’s number (c) the app’s name (d) what the app really does
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 16 px
    Hint: 23 px
    Body text: 9 px (a) Footer (b) Body text (c) Hint
35. 35.🧪 How many of these test cases pass?
    🚚 Rule: delivery is free (0) when the order is 300 or more; otherwise it costs 40.
    function delivery(total) {
      if (total >= 300) {
        return 0;
      }
      return 40;
    }
    Test 1: delivery(300) → expected 0
    Test 2: delivery(350) → expected 0
    Test 3: delivery(150) → expected 40
36. 36.🗒️ You are planning version 1 of a water reminder. Which feature can WAIT for a later version? (a) see today’s total (b) log a glass of water (c) custom alert sounds (d) set a reminder time
37. 37.True or false: tap to go Next is an input. (a) True (b) False
38. 38.🔀 When does the else part run? (a) always (b) never (c) when the test is true (d) when the test is false
39. 39.True or false: tapping a button is an output. (a) True (b) False
40. 40.🔀 Why plan the user flow before building? (a) to hide the buttons (b) to skip testing (c) so each step is clear (d) to add more taps

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