App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 939 · 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: a times-table quiz is a health app. (a) True (b) False
2. 2.🗂️ What kind of app is a spelling coach? (a) a tool app (b) a game (c) a learning app (d) a health app
3. 3.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
4. 4.🚀 Your app is at version 2.2.1. The next release fixes a small bug. What is its version number? (a) 2.2.2 (b) 2.3.1 (c) 3.0.0 (d) 2.3.0
5. 5.📊 Survey: which problem bugs you most? How many more votes did “missing the bus” get than “forgetting homework”?
   missing the bus: 14 votes
   losing water bottles: 23 votes
   forgetting homework: 13 votes
6. 6.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
   1. tap the Me tab
   2. open “Map”
   3. open “Edit photo”
   How many times must you tap Back to reach the main screen of this tab?
7. 7.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
   line 1: let stars = 42; // start at 39
   line 2: stars = stars * 2; // double it
   line 3: stars = stars + 6; // add 6
   line 4: show(stars); // show it
8. 8.🔍 Which is the odd one out? (a) a spelling coach (b) a flashcard trainer (c) a times-table quiz (d) a cricket run chase
9. 9.🧰 What number does this code show?
   function points(stars) {
     return stars * 10 + 5;
   }
   show(points(3) + points(5));
10. 10.📴 Which of these can often still work with no internet? (a) a new website (b) a video call (c) an installed app (d) an online search
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 14 px
    Footer: 26 px
    Menu: 16 px (a) Footer (b) Menu (c) Title
12. 12.📱 Which one opens in a web browser: an app or a website? (a) an app (b) a website
13. 13.🧩 How many buttons does this app screen have?
    [title] Add Homework
    [button] Send
    [button] Cancel
    [switch] Dark mode
    [text box] Subject
    [text box] Phone
    [button] Start
    [slider] Volume
14. 14.🚀 Your app is at version 4.4.4. The next release is a big redesign that changes how the app works. What is its version number? (a) 4.5.0 (b) 4.4.5 (c) 4.5.4 (d) 5.0.0
15. 15.True or false: you spot a problem to solve at the plan stage. (a) True (b) False
16. 16.🖼️ In this wireframe (top to bottom), what is right above the search box?
    [ filter buttons ]
    [ search box ]
    [ big picture ]
    [ menu icon ]
    [ top bar ] (a) top bar (b) menu icon (c) filter buttons (d) big picture
17. 17.💡 Which app idea solves this problem: Grandpa forgets his tablets? (a) a medicine reminder (b) a lost-and-found board (c) a bill splitter (d) a study-room finder
18. 18.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ list of items ]
    [ filter buttons ]
    [ big picture ]
    [ search box ]
    [ Save button ]
    [ menu icon ] (a) list of items (b) search box (c) filter buttons (d) menu icon
19. 19.True or false: space between buttons is good button design. (a) False (b) True
20. 20.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] New Note
    [slider] Text size
    [text box] Due date
    [text box] Age
    [button] Save
    [text box] Name
21. 21.💡 How can you check that people really have the problem? (a) just guess (b) pick a colour (c) ask possible users (d) copy another app
22. 22.✏️ Is this true of a wireframe or of a final design: is a quick sketch? (a) a wireframe (b) a final design
23. 23.⚙️ In an app, is working out a tip an input, processing or an output? (a) output (b) processing (c) input
24. 24.💡 Does an app idea like an app that just says hi solve a real problem? (a) No (b) Yes
25. 25.👆 The user taps the button 5 times. What number does the label show now?
    let points = 2;
    button.onTap = function () {
      points = points + 3;
      label.text = points;
    };
26. 26.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 14 px
    Hint: 23 px
    Footer: 26 px
    Title: 20 px (a) Hint (b) Footer (c) Title (d) Menu
27. 27.👥 A school app has 135 students, 205 teachers and 110 parents as users. How many more students than parents are there?
28. 28.🧰 What does this code show?
    function greet(name) {
      return "Welcome, " + name + "!";
    }
    show(greet("Arjun")); (a) Arjun (b) Welcome, Arjun! (c) Welcome, name! (d) greet
29. 29.🚀 Your app is at version 2.8.6. The next release is a big redesign that changes how the app works. What is its version number? (a) 3.0.0 (b) 2.9.6 (c) 2.9.0 (d) 2.8.7
30. 30.✏️ Do wireframes usually show the final colours? (a) No (b) Yes
31. 31.🔁 What number does this code show?
    let marks = [1, 2, 16, 6, 1];
    let total = 0;
    for (let i = 0; i < marks.length; i++) {
      total = total + marks[i];
    }
    show(total);
32. 32.👆 The user taps the button 2 times. What number does the label show now?
    let coins = 6;
    button.onTap = function () {
      coins = coins + 1;
      label.text = coins;
    };
33. 33.Which of these is true of a wireframe? (a) has the real colours (b) shows where things go (c) shows the real fonts (d) looks like the real app
34. 34.🗒️ Version 1 of a bus tracker must be ready in 12 days. How many days are left for extras after the must-haves?
    see where the bus is: 1 days
    show arrival time: 4 days
    pick your bus stop: 2 days
35. 35.🔀 What does this PIN rule show?
    let pin = "6013";
    if (pin.length === 4) {
      show("PIN saved");
    } else {
      show("Use 4 digits");
    } (a) Use 4 digits (b) PIN saved
36. 36.True or false: a website opens from a link. (a) False (b) True
37. 37.📊 Survey: which problem bugs you most? How many students voted in all?
    wasting pocket money: 15 votes
    forgetting birthdays: 21 votes
    forgetting homework: 14 votes
38. 38.🔢 After an app is released, what comes right after “fix and improve”? (a) release an update (b) list what to fix (c) read user reviews (d) test it again
39. 39.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) show the balance (b) add money received (c) add money spent (d) export to a file
40. 40.📱 Which one updates from the store: an app or a website? (a) a website (b) an app

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