App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 391 · 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 clear word like Save is good button design. (a) False (b) True
2. 2.🎨 A beautiful app that confuses everyone has ___. (a) no UI at all (b) perfect UX (c) good UX but poor UI (d) good UI but poor UX
3. 3.🧩 Which part lets the user give the app information? (a) a title (b) a logo (c) an input (d) an icon
4. 4.👥 A library app has 245 readers, 70 librarians and 290 volunteers as users. How many users does it have in all?
5. 5.🧩 In an app, what is a slider for volume? (a) an input (b) a button (c) a screen (d) data
6. 6.🐞 Each comment says what its line SHOULD do. Which line has the bug?
   line 1: let score = 31; // start at 31
   line 2: score = score + 3; // add 3
   line 3: score = score * 3; // double it
   line 4: score = score - 4; // take away 4
   line 5: show(score); // show it (a) line 3 (b) line 4 (c) line 2 (d) line 1
7. 7.Which of these is an input? (a) the settings page (b) your saved notes (c) your friends list (d) a box to type a name
8. 8.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) text that can grow (d) tiny tap areas
9. 9.⚙️ In an app, is working out a tip an input, processing or an output? (a) processing (b) input (c) output
10. 10.🗒️ You are planning version 1 of a water reminder. Which feature can WAIT for a later version? (a) see today’s total (b) set a reminder time (c) custom alert sounds (d) log a glass of water
11. 11.👆 “On tap → do this” links an event to ___. (a) a font (b) a web address (c) a charger (d) an action
12. 12.🎯 Is this a user need or a feature: a reminder alarm? (a) a feature (b) a user need
13. 13.🖼️ In this wireframe (top to bottom), what is right below the filter buttons?
    [ list of items ]
    [ filter buttons ]
    [ Save button ]
    [ title text ] (a) Save button (b) list of items (c) title text
14. 14.Which of these is true of an app? (a) needs no installing (b) opens in a web browser (c) has a web address (d) has a home-screen icon
15. 15.🔍 Which is the odd one out? (a) a puzzle with levels (b) a flashcard trainer (c) a cricket run chase (d) a racing challenge
16. 16.🔁 What number does this code show?
    let steps = [7, 9, 3];
    let total = 0;
    for (let i = 0; i < steps.length; i++) {
      total = total + steps[i];
    }
    show(total);
17. 17.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(85, 2));
18. 18.True or false: you sketch the screens at the idea stage. (a) True (b) False
19. 19.🗒️ You are planning version 1 of a quiz app. Which feature can WAIT for a later version? (a) show the score (b) check the answer (c) show a question (d) confetti effects
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 21 px
    Hint: 21 px
    Caption: 23 px
    Title: 13 px
21. 21.🔀 What does this sign-up rule show?
    let age = 15;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Ask a parent (b) Welcome!
22. 22.🎨 UI stands for user ___. (a) input (b) internet (c) interface (d) idea
23. 23.🔀 When does the else part run? (a) never (b) always (c) when the test is false (d) when the test is true
24. 24.True or false: an app has a home-screen icon. (a) True (b) False
25. 25.🔁 What is the LAST line this code shows?
    let names = ["Riya", "Zoya", "Arjun"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Riya (b) Hi, Zoya (c) Hi, Arjun
26. 26.🔁 What does a loop do? (a) saves photos (b) draws icons (c) deletes code (d) repeats code
27. 27.Which of these is true of a wireframe? (a) has the real colours (b) is a quick sketch (c) shows the real fonts (d) uses the final pictures
28. 28.🎯 Is this a user need or a feature: “Small text is hard”? (a) a feature (b) a user need
29. 29.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) pie-chart colours (b) savings stickers (c) show the balance (d) export to a file
30. 30.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
31. 31.🔢 When you make an app, which comes first: “test the app” or “get an idea”? (a) get an idea (b) test the app
32. 32.👥 A school app has 40 students, 285 teachers and 170 parents as users. How many more teachers than parents are there?
33. 33.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
34. 34.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    no quiet study place: 7 votes
    forgetting homework: 23 votes
    forgetting birthdays: 14 votes (a) forgetting birthdays (b) forgetting homework (c) no quiet study place
35. 35.🧩 Which of these is a button on this screen?
    [title] Edit Profile
    [text box] Due date
    [button] Save
    [button] Send
    [switch] Dark mode
    [text box] Name
    [slider] Text size (a) Due date (b) Name (c) Dark mode (d) Send
36. 36.🐞 What is a bug? (a) a new feature (b) a fast phone (c) a nice icon (d) a mistake in the code
37. 37.True or false: you sketch the screens at the build stage. (a) True (b) False
38. 38.💾 What number does this code show?
    let songs = ["Ocean", "Sunrise"];
    songs.push("Stars");
    show(songs.length);
39. 39.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) add money received (b) show the balance (c) savings stickers (d) add money spent
40. 40.🖼️ In this wireframe (top to bottom), what is right above the filter buttons?
    [ top bar ]
    [ search box ]
    [ title text ]
    [ Add button ]
    [ menu icon ]
    [ filter buttons ] (a) search box (b) top bar (c) Add button (d) menu icon

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