App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 292 · 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 food-order flow, which comes LAST? (a) check the cart (b) track the order (c) pay for the order (d) open the menu
2. 2.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
   Next button: 60 px tall
   Save button: 52 px tall
   Send button: 60 px tall
   Back button: 28 px tall (a) Next (b) Send (c) Back (d) Save
3. 3.⚙️ In an app, is a pop-up message an input, processing or an output? (a) processing (b) output (c) input
4. 4.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Start button: 36 px tall
   Save button: 60 px tall
   Send button: 44 px tall
   Done button: 32 px tall
5. 5.🔁 What number does this code show?
   let runs = [16, 48, 34];
   let count = 0;
   for (let i = 0; i < runs.length; i++) {
     if (runs[i] >= 50) {
       count = count + 1;
     }
   }
   show(count);
6. 6.🧪 How many of these test cases pass?
   🎟️ Rule: a ticket costs 50 for children under 13, and 100 for everyone else.
   function price(age) {
     if (age < 13) {
       return 50;
     }
     return 100;
   }
   Test 1: price(13) → expected 100
   Test 2: price(15) → expected 100
   Test 3: price(11) → expected 50
7. 7.🧰 What number does this code show?
   function total(price, qty) {
     return price * qty;
   }
   show(total(75, 5));
8. 8.🔁 What does a loop do? (a) draws icons (b) saves photos (c) deletes code (d) repeats code
9. 9.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
10. 10.🔍 Which is the odd one out? (a) try every button (b) pick the features (c) write down the bugs (d) let friends try it
11. 11.📅 An app team plans for 3 days, builds for 7 days, tests for 3 days and releases on 1 more day. How many more days does building take than testing?
12. 12.💡 Which app idea solves this problem: friends argue over who pays? (a) a study-room finder (b) a bill splitter (c) a homework planner (d) a medicine reminder
13. 13.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
14. 14.True or false: an app comes from an app store. (a) False (b) True
15. 15.🧰 How do you run (call) a function called greet? (a) #greet (b) greet() (c) run greet (d) greet[]
16. 16.✏️ Do wireframes usually show the final colours? (a) Yes (b) No
17. 17.Which of these is data? (a) a switch for dark mode (b) tap to Send (c) the log-in page (d) your friends list
18. 18.Which of these makes the app harder to use? (a) colour as the only clue (b) big touch targets (c) captions on videos (d) strong colour contrast
19. 19.Which of these app ideas solves no real problem? (a) a medicine reminder (b) a lost-and-found board (c) a blank grey screen (d) a bill splitter
20. 20.🎨 Is this about UI or UX: the theme colours? (a) UX (b) UI
21. 21.True or false: the icon shapes is about UI (the look). (a) False (b) True
22. 22.🗒️ You are planning version 1 of a bus tracker. Which feature is a MUST-HAVE? (a) change the bus icon (b) rate the driver (c) a dark mode (d) pick your bus stop
23. 23.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ filter buttons ]
    [ search box ]
    [ list of items ]
    [ big picture ]
    [ menu icon ]
    [ top bar ] (a) list of items (b) search box (c) big picture (d) top bar
24. 24.📱 Which one needs no installing: an app or a website? (a) an app (b) a website
25. 25.🗒️ Why keep version 1 small? (a) to use up storage (b) to look bigger (c) to confuse users (d) to learn from users soon
26. 26.🔢 When you make an app, which comes first: “get an idea” or “build the app”? (a) get an idea (b) build the app
27. 27.📴 Which of these can often still work with no internet? (a) a new website (b) an online search (c) a video call (d) an installed app
28. 28.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
29. 29.👥 A library app has 135 readers, 295 librarians and 270 volunteers as users. How many more librarians than volunteers are there?
30. 30.🔁 What number does this code show?
    let scores = [50, 81, 55, 84, 26];
    let count = 0;
    for (let i = 0; i < scores.length; i++) {
      if (scores[i] >= 50) {
        count = count + 1;
      }
    }
    show(count);
31. 31.🎨 Is this about UI or UX: the font size? (a) UI (b) UX
32. 32.📅 An app team plans for 4 days, builds for 4 days, tests for 1 days and releases on 1 more day. How many more days does building take than testing?
33. 33.Which of these fits saving in the cloud? (a) your last game level (b) notes to read offline (c) the sound on/off setting (d) a class leaderboard
34. 34.🎯 A short made-up profile of a typical user is called a ___. (a) pixel (b) protocol (c) password (d) persona
35. 35.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) add money spent (b) show the balance (c) pie-chart colours (d) add money received
36. 36.🗒️ You are planning version 1 of a homework planner. Which feature can WAIT for a later version? (a) add a homework task (b) pick a theme colour (c) see tasks by day (d) set a due date
37. 37.True or false: a lost-and-found board solves no real problem. (a) True (b) False
38. 38.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
39. 39.🔢 In a photo-post flow, which comes first: “write a caption” or “open the camera screen”? (a) write a caption (b) open the camera screen
40. 40.⚙️ What number does this app show?
    let km = 10; // typed by the user
    let metres = km * 1000;
    show(metres);

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