App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 162 · 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.🔍 Which is the odd one out? (a) the screen layout (b) how easy sign-up is (c) the theme colours (d) the icon shapes
2. 2.🔢 In a sign-up flow, which comes FIRST? (a) make a password (b) see the home screen (c) open the app (d) enter the code sent
3. 3.True or false: “tiny tap areas” helps everyone use the app. (a) False (b) True
4. 4.True or false: one second passes is a load event. (a) False (b) True
5. 5.⚙️ What number does this app show?
   let price = 10; // typed by the user
   let qty = 4; // typed by the user
   let total = price * qty;
   show(total);
6. 6.🧪 One test case fails. Which one?
   📝 Rule: a quiz is passed with 6 or more right answers.
   function result(right) {
     if (right > 6) {
       return "Pass";
     }
     return "Try again";
   }
   Test 1: result(6) → expected Pass
   Test 2: result(5) → expected Try again
   Test 3: result(7) → expected Pass (a) Test 3 (b) Test 1 (c) Test 2
7. 7.True or false: how fast a task is done is about UX (the experience). (a) True (b) False
8. 8.True or false: a beep sound is an output. (a) True (b) False
9. 9.True or false: checking a password is an output. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) the button colours (b) how many taps it takes (c) how fast a task is done (d) how users feel after
11. 11.Which of these is an input? (a) the game-over page (b) a slider for volume (c) the log-in page (d) the home page of an app
12. 12.👥 A school app has 45 students, 25 teachers and 270 parents as users. How many users does it have in all?
13. 13.Which of these is an input? (a) your friends list (b) the settings page (c) your high score (d) a date picker
14. 14.True or false: a tiny 20 px button is good button design. (a) True (b) False
15. 15.True or false: your last game level fits saving on the phone. (a) False (b) True
16. 16.🚀 Your app is at version 1.8.2. The next release fixes a small bug. What is its version number? (a) 1.9.0 (b) 1.8.3 (c) 1.9.2 (d) 2.0.0
17. 17.👆 What kind of event is this: the app starts up? (a) a timer event (b) a tap event (c) a text event (d) a load event
18. 18.🔀 Which badge does this quiz app show?
    let marks = 40;
    if (marks >= 80) {
      show("Gold");
    } else if (marks >= 50) {
      show("Silver");
    } else {
      show("Bronze");
    } (a) Gold (b) Silver (c) Bronze
19. 19.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
20. 20.🐞 Each comment says what its line SHOULD do. Which line has the bug?
    line 1: let stars = 46; // start at 46
    line 2: stars = stars - 5; // take away 5
    line 3: stars = stars - 3; // take away 3
    line 4: stars = stars + 3; // take away 3
    line 5: show(stars); // show it (a) line 4 (b) line 2 (c) line 1 (d) line 3
21. 21.🧪 A test case is an input together with its ___. (a) font size (b) screen colour (c) expected result (d) app icon
22. 22.🚀 Which version is newer: 2.13.0 or 2.6.3? (a) 2.13.0 (b) 2.6.3
23. 23.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
24. 24.🧪 What is the ACTUAL result of Test 2?
    🚚 Rule: delivery is free (0) when the order is 600 or more; otherwise it costs 40.
    function delivery(total) {
      if (total >= 600) {
        return 0;
      }
      return 40;
    }
    Test 1: delivery(750) → expected 0
    Test 2: delivery(450) → expected 40
    Test 3: delivery(650) → expected 0
25. 25.True or false: the font size is about UX (the experience). (a) True (b) False
26. 26.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
    line 1: let lives = 45; // start at 44
    line 2: lives = lives * 2; // double it
    line 3: lives = lives + 6; // add 6
    line 4: lives = lives * 2; // double it
    line 5: show(lives); // show it
27. 27.📊 Survey: which problem bugs you most? How many students voted in all?
    losing water bottles: 10 votes
    forgetting birthdays: 14 votes
    forgetting homework: 19 votes
28. 28.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
29. 29.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
30. 30.⚙️ In an app, is a beep sound an input, processing or an output? (a) processing (b) input (c) output
31. 31.Which of these is an input? (a) sorting the scores (b) a beep sound (c) taking a photo (d) a result on screen
32. 32.🔍 Which is the odd one out? (a) how users feel after (b) whether users get lost (c) the icon shapes (d) how fast a task is done
33. 33.True or false: you put it on an app store at the release stage. (a) True (b) False
34. 34.Which of these happens at the build stage? (a) spot a problem to solve (b) pick the features (c) connect the data (d) share the download link
35. 35.🗒️ You are planning version 1 of a homework planner. Which feature is a MUST-HAVE? (a) see tasks by day (b) earn stickers (c) share tasks to friends (d) pick a theme colour
36. 36.💡 After a survey, which need should version 1 solve? (a) the rarest need (b) a random need (c) the most common need (d) the newest trend
37. 37.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
38. 38.💾 What is a variable? (a) a named box for a value (b) a picture (c) a type of screen (d) a phone setting
39. 39.🔁 What is the LAST line this code shows?
    let names = ["Arjun", "Aman", "Meera", "Kabir", "Zoya"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Zoya (b) Hi, Arjun (c) Hi, Aman (d) Hi, Meera
40. 40.🖼️ How many parts (boxes) does this wireframe have?
    [ Add button ]
    [ search box ]
    [ title text ]
    [ list of items ]
    [ Save button ]
    [ top bar ]

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