App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 288 · 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 a photo-post flow, which comes LAST? (a) take the photo (b) open the camera screen (c) post the photo (d) write a caption
2. 2.🔀 Why plan the user flow before building? (a) to skip testing (b) so each step is clear (c) to hide the buttons (d) to add more taps
3. 3.🧩 In an app, what is the home page of an app? (a) a screen (b) an input (c) a button (d) data
4. 4.Which of these requests is fair? (a) calculator → location (b) timer → your photos (c) camera app → camera (d) torch → contacts
5. 5.🖼️ In this wireframe (top to bottom), what is right below the filter buttons?
   [ filter buttons ]
   [ menu icon ]
   [ search box ]
   [ top bar ] (a) top bar (b) menu icon (c) search box
6. 6.🔁 What does a loop do? (a) deletes code (b) draws icons (c) repeats code (d) saves photos
7. 7.🎨 UI stands for user ___. (a) input (b) interface (c) idea (d) internet
8. 8.🧩 Which of these is a button on this screen?
   [title] Order Snacks
   [button] Send
   [text box] Email
   [button] Help (a) Help (b) Email
9. 9.✏️ Why draw a wireframe before coding? (a) it adds colours (b) it runs the app (c) changes are quick (d) it saves data
10. 10.💡 After a survey, which need should version 1 solve? (a) a random need (b) the most common need (c) the rarest need (d) the newest trend
11. 11.🎯 Which app would help this user most: a child saving up for a cycle? (a) a big-text reader (b) a recipe finder (c) a pocket-money tracker (d) a homework planner
12. 12.🧩 Which of these is a button on this screen?
    [title] Order Snacks
    [button] Help
    [text box] Phone (a) Help (b) Phone
13. 13.True or false: tapping a button is processing. (a) True (b) False
14. 14.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. tap the Lessons tab
    2. tap the Me tab
    3. tap the Lessons tab
    4. tap the Me tab
    5. open “Video”
    Which screen are you on now? (a) Lessons (b) Me (c) Video (d) Quiz
15. 15.🔁 What number does this code show?
    let steps = [49, 73, 14];
    let count = 0;
    for (let i = 0; i < steps.length; i++) {
      if (steps[i] >= 60) {
        count = count + 1;
      }
    }
    show(count);
16. 16.⚙️ What number does this app show?
    let price = 170; // typed by the user
    let off = 40; // typed by the user
    let pay = price - off;
    show(pay);
17. 17.🧰 What does return do in a function? (a) deletes the app (b) repeats the code (c) closes the screen (d) sends back a value
18. 18.🧰 What is a function? (a) a named block of code (b) a list of colours (c) a type of phone (d) a screen size
19. 19.💡 Which app idea solves this problem: projects pile up at once? (a) a study-room finder (b) a medicine reminder (c) a lost-and-found board (d) a homework planner
20. 20.🔢 In a photo-post flow, which comes FIRST? (a) write a caption (b) take the photo (c) add a filter (d) open the camera screen
21. 21.👆 The user taps the button 4 times. What number does the label show now?
    let points = 5;
    button.onTap = function () {
      points = points + 1;
      label.text = points;
    };
22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 48 px tall
    Done button: 64 px tall
    Help button: 32 px tall (a) Start (b) Done (c) Help
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 18 px
    Title: 19 px
    Caption: 16 px
    Label: 10 px (a) Caption (b) Title (c) Footer (d) Label
24. 24.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    no quiet study place: 9 votes
    missing the bus: 10 votes
    losing water bottles: 22 votes (a) losing water bottles (b) missing the bus (c) no quiet study place
25. 25.True or false: a recipe finder is the best fit for a cook with no idea for dinner. (a) True (b) False
26. 26.🗒️ You are planning version 1 of a homework planner. Which feature can WAIT for a later version? (a) add a homework task (b) set a due date (c) share tasks to friends (d) see tasks by day
27. 27.🔐 Is this permission request fair or too much: torch → contacts? (a) too much (b) fair
28. 28.🔀 What does >= mean? (a) not equal (b) less than (c) greater than or equal (d) smaller or equal
29. 29.📅 An app team plans for 2 days, builds for 5 days, tests for 3 days and releases on 1 more day. Planning starts on day 1. On which day does building finish?
30. 30.👥 A library app has 300 readers, 175 librarians and 90 volunteers as users. How many more readers than librarians are there?
31. 31.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
    line 1: let stars = 39; // start at 39
    line 2: stars = stars + 2; // add 2
    line 3: stars = stars - 3; // add 3
    line 4: stars = stars * 2; // double it
    line 5: show(stars); // show it
32. 32.🔁 What number does this code show?
    let scores = [20, 5, 18, 1, 6];
    let best = 0;
    for (let i = 0; i < scores.length; i++) {
      if (scores[i] > best) {
        best = scores[i];
      }
    }
    show(best);
33. 33.👥 A clinic app has 275 patients, 50 doctors and 295 nurses as users. How many more nurses than doctors are there?
34. 34.Which of these is true of a wireframe? (a) uses the final pictures (b) looks like the real app (c) shows where things go (d) has the real colours
35. 35.👆 What kind of event is this: a finger hits Like? (a) a timer event (b) a load event (c) a text event (d) a tap event
36. 36.True or false: strong colour contrast is poor button design. (a) True (b) False
37. 37.🔀 What does this sign-up rule show?
    let age = 12;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Ask a parent (b) Welcome!
38. 38.🧰 What does this code show?
    function greet(name) {
      return "Well done, " + name + "!";
    }
    show(greet("Riya")); (a) Well done, name! (b) greet (c) Well done, Riya! (d) Riya
39. 39.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 590; // typed by the user
    line 2: let off = 20; // typed by the user
    line 3: let pay = price - off;
    line 4: show(pay); (a) line 1 (b) line 4 (c) line 2 (d) line 3
40. 40.📱 Which one opens from a link: an app or a website? (a) an app (b) a website

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