App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 713 · 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.🔍 Which is the odd one out? (a) spot a problem to solve (b) talk to possible users (c) list what users need (d) put it on an app store
2. 2.🧰 Why write a function? (a) to hide errors (b) to make code longer (c) to reuse code (d) to slow the app
3. 3.🧩 In an app, what is the log-in page? (a) an input (b) data (c) a button (d) a screen
4. 4.🔐 A torch app asks for your contacts. What should you do? (a) post them online (b) deny it (c) allow it (d) share them all
5. 5.🔍 Which is the odd one out? (a) a flashcard trainer (b) a torch (c) a times-table quiz (d) a spelling coach
6. 6.🔍 Which is the odd one out? (a) list what users need (b) talk to possible users (c) write the code (d) spot a problem to solve
7. 7.👆 The user types Riya in nameBox and taps the button 1 time. What does the label show?
   button.onTap = function () {
     label.text = "Hi, " + nameBox.text + "!";
   }; (a) Hi, Riya! (b) Riya (c) Hi, nameBox.text! (d) Hi!
8. 8.Which of these is true of an app? (a) is installed on a phone (b) needs no installing (c) opens from a link (d) opens in a web browser
9. 9.📊 Survey: which problem bugs you most? How many more votes did “forgetting homework” get than “missing the bus”?
   forgetting homework: 23 votes
   missing the bus: 5 votes
   losing water bottles: 17 votes
10. 10.🧩 How many buttons does this app screen have?
    [title] New Note
    [slider] Text size
    [text box] Name
    [button] Start
11. 11.🔢 In a food-order flow, which comes LAST? (a) add it to the cart (b) track the order (c) pick a dish (d) open the menu
12. 12.🔍 Which is the odd one out? (a) write the code (b) add the buttons (c) connect the data (d) write down the bugs
13. 13.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
14. 14.🔀 What does this sign-up rule show?
    let age = 17;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Welcome! (b) Ask a parent
15. 15.🗒️ Version 1 of a pocket-money tracker must be ready in 10 days. How many days are left for extras after the must-haves?
    add money received: 3 days
    add money spent: 1 days
    show the balance: 2 days
16. 16.🔢 In a photo-post flow, which comes first: “write a caption” or “post the photo”? (a) write a caption (b) post the photo
17. 17.🎯 An app for “everyone” with no clear user usually ___. (a) wins every prize (b) is easy to build (c) helps nobody well (d) needs no testing
18. 18.Which colour pair is easy to read? (a) pale pink on white (b) white on dark green (c) light grey on white (d) dark blue on black
19. 19.🗂️ What kind of app is a flashcard trainer? (a) a tool app (b) a health app (c) a game (d) a learning app
20. 20.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    wasting pocket money: 6 votes
    no quiet study place: 13 votes
    forgetting homework: 16 votes (a) wasting pocket money (b) forgetting homework (c) no quiet study place
21. 21.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Map”
    2. open “Help page”
    3. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
22. 22.💡 How can you check that people really have the problem? (a) copy another app (b) just guess (c) ask possible users (d) pick a colour
23. 23.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
24. 24.📅 An app team plans for 3 days, builds for 8 days, tests for 1 days and releases on 1 more day. How many days does the whole project take?
25. 25.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 68 px tall
    Back button: 28 px tall
    Help button: 56 px tall
    Cancel button: 64 px tall (a) Help (b) Cancel (c) Send (d) Back
26. 26.💾 pop() takes off the last item. What does this code show?
    let notes = ["Maths", "Art", "Science", "Music", "Hindi"];
    notes.pop();
    show(notes[notes.length - 1]); (a) Science (b) Art (c) Music (d) Maths
27. 27.True or false: a website has a web address. (a) True (b) False
28. 28.🔀 When does the else part run? (a) always (b) when the test is true (c) never (d) when the test is false
29. 29.🗒️ Version 1 of a pocket-money tracker must be ready in 6 days. How many days are left for extras after the must-haves?
    add money received: 2 days
    add money spent: 1 days
    show the balance: 3 days
30. 30.🔐 Which permission does a birthday list of friends really need? (a) the microphone (b) the camera (c) contacts (d) location
31. 31.🔘 Our rule: buttons are at least 48 px tall. The Done button is 36 px tall. How many px taller must it be?
32. 32.💾 What number does this code show?
    let friends = ["Riya", "Aman"];
    friends.push("Kabir");
    friends.push("Zoya");
    show(friends.length);
33. 33.🔁 What number does this code show?
    let scores = [4, 10, 18];
    let total = 0;
    for (let i = 0; i < scores.length; i++) {
      total = total + scores[i];
    }
    show(total);
34. 34.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. open “Friend list”
    2. open “Score card”
    3. open “Edit photo”
    4. open “Badges”
    Which screen are you on now? (a) Friend list (b) Score card (c) Edit photo (d) Badges
35. 35.🔘 Our rule: buttons are at least 48 px tall. The Done button is 20 px tall. How many px taller must it be?
36. 36.🗒️ Version 1 of a homework planner must be ready in 8 days. How many days are left for extras after the must-haves?
    add a homework task: 4 days
    set a due date: 1 days
    see tasks by day: 3 days
37. 37.🗒️ The first small, working version of an app is often called an ___. (a) URL (b) MVP (c) CPU (d) FAQ
38. 38.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
39. 39.🚀 Your app is at version 4.1.8. The next release adds a new feature. What is its version number? (a) 4.2.8 (b) 4.2.0 (c) 5.0.0 (d) 4.1.9
40. 40.Which of these is true of the back button? (a) goes to the last screen (b) opens a list of pages (c) sits at the bottom (d) switches main sections

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