App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 684 · 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.🧩 How many buttons does this app screen have?
   [title] Add Homework
   [text box] Phone
   [slider] Text size
   [switch] Dark mode
   [button] Cancel
   [text box] Name
2. 2.⚙️ What number does this app show?
   let price = 470; // typed by the user
   let off = 30; // typed by the user
   let pay = price - off;
   show(pay);
3. 3.🗒️ Version 1 of a bus tracker must be ready in 11 days. How many days are left for extras after the must-haves?
   see where the bus is: 3 days
   show arrival time: 4 days
   pick your bus stop: 3 days
4. 4.📊 Survey: which problem bugs you most? How many more votes did “wasting pocket money” get than “forgetting homework”?
   losing water bottles: 11 votes
   wasting pocket money: 20 votes
   forgetting homework: 13 votes
5. 5.🐞 This code has a bug. What number does it ACTUALLY show?
   line 1: let stars = 41; // start at 41
   line 2: stars = stars * 2; // double it
   line 3: stars = stars * 3; // double it
   line 4: stars = stars - 1; // take away 1
   line 5: show(stars); // show it
6. 6.🧰 In function tip(bill), what is bill? (a) an event (b) a screen (c) a parameter (d) a loop
7. 7.🧩 Which of these is a button on this screen?
   [title] Add Homework
   [button] Next
   [switch] Dark mode
   [text box] Due date
   [button] Cancel (a) Next (b) Due date (c) Dark mode
8. 8.🐞 Each comment says what its line SHOULD do. Which line has the bug?
   line 1: let score = 30; // start at 30
   line 2: score = score - 2; // take away 2
   line 3: score = score - 5; // take away 2
   line 4: score = score * 2; // double it
   line 5: show(score); // show it (a) line 1 (b) line 3 (c) line 4 (d) line 2
9. 9.👥 A school app has 300 students, 40 teachers and 160 parents as users. Which user group is the biggest? (a) parents (b) students (c) teachers
10. 10.Which of these is about UX (the experience)? (a) how many taps it takes (b) the theme colours (c) the icon shapes (d) the font size
11. 11.Which of these happens at the test stage? (a) list what users need (b) share the download link (c) try every button (d) write the code
12. 12.👥 A library app has 100 readers, 20 librarians and 145 volunteers as users. How many more volunteers than readers are there?
13. 13.Which of these app ideas solves no real problem? (a) a bill splitter (b) a blank grey screen (c) a free study-room finder (d) a lost-and-found board
14. 14.🧭 Which part of navigation hides extra links? (a) the back button (b) a menu button (c) a tab bar
15. 15.True or false: taking a photo is an input. (a) True (b) False
16. 16.Which of these is true of a website? (a) is installed on a phone (b) comes from an app store (c) opens in a web browser (d) updates from the store
17. 17.True or false: tapping a button is an input. (a) False (b) True
18. 18.💡 Does an app idea like a page of random dots solve a real problem? (a) No (b) Yes
19. 19.🔀 What does this battery rule show?
    let battery = 24;
    if (battery < 20) {
      show("Low battery");
    } else {
      show("Battery OK");
    } (a) Battery OK (b) Low battery
20. 20.True or false: the font size is about UX (the experience). (a) True (b) False
21. 21.🗂️ What kind of app is a sleep tracker? (a) a game (b) a learning app (c) a tool app (d) a health app
22. 22.💡 Does an app idea like a free study-room finder solve a real problem? (a) No (b) Yes
23. 23.🎯 An app for “everyone” with no clear user usually ___. (a) helps nobody well (b) wins every prize (c) needs no testing (d) is easy to build
24. 24.👥 A clinic app has 45 patients, 80 doctors and 230 nurses as users. How many users does it have in all?
25. 25.🧩 In an app, what is a date picker? (a) a screen (b) an input (c) data (d) a button
26. 26.🔢 After an app is released, which comes first: “fix and improve” or “test it again”? (a) fix and improve (b) test it again
27. 27.💾 Where should the app save a draft you are typing: on the phone or in the cloud? (a) on the phone (b) in the cloud
28. 28.True or false: a homework planner is the best fit for a cook with no idea for dinner. (a) True (b) False
29. 29.Which of these requests is fair? (a) quiz app → microphone (b) timer → your photos (c) map app → location (d) calculator → location
30. 30.True or false: a clear word like Save is poor button design. (a) False (b) True
31. 31.🧩 What do we call one full page of an app? (a) a cable (b) a battery (c) a screen (d) a variable
32. 32.🖼️ In this wireframe (top to bottom), what is right below the filter buttons?
    [ title text ]
    [ filter buttons ]
    [ search box ]
    [ tab bar ] (a) title text (b) tab bar (c) search box
33. 33.🔁 What is the LAST line this code shows?
    let names = ["Meera", "Aman", "Arjun", "Zoya", "Riya"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Arjun (b) Hi, Meera (c) Hi, Aman (d) Hi, Riya
34. 34.Which of these is data? (a) your high score (b) the game-over page (c) tap to Start (d) a box to type a name
35. 35.🧰 What number does this code show?
    function double(n) {
      return n * 2;
    }
    show(double(40));
36. 36.🔀 What does this sign-up rule show?
    let age = 10;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Welcome! (b) Ask a parent
37. 37.🔢 In a food-order flow, which comes first: “pay for the order” or “add it to the cart”? (a) add it to the cart (b) pay for the order
38. 38.🔐 Which permission does a selfie sticker app really need? (a) the microphone (b) location (c) the camera (d) contacts
39. 39.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
    Design A: Home → Cart → Pens
    Design B: Home → Menu → Item → Address → Offers → Pens → Shop
40. 40.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read

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