App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 60 · 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 app would help this user most: a student who often misses the school bus? (a) a big-text reader (b) a bus tracker (c) a pocket-money tracker (d) a homework planner
2. 2.📊 Survey: which problem bugs you most? Which problem should your app solve first?
   forgetting birthdays: 7 votes
   wasting pocket money: 8 votes
   no quiet study place: 21 votes (a) no quiet study place (b) wasting pocket money (c) forgetting birthdays
3. 3.🗒️ Why keep version 1 small? (a) to confuse users (b) to look bigger (c) to use up storage (d) to learn from users soon
4. 4.🧪 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(7) → expected Pass
   Test 2: result(6) → expected Pass
   Test 3: result(5) → expected Try again (a) Test 1 (b) Test 2 (c) Test 3
5. 5.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 9 px
   Title: 25 px
   Label: 17 px
   Caption: 28 px
   Footer: 16 px (a) Title (b) Caption (c) Body text (d) Label
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(7) → expected Pass
   Test 2: result(6) → expected Pass
   Test 3: result(4) → expected Try again (a) Test 2 (b) Test 3 (c) Test 1
7. 7.⚙️ What number does this app show?
   let price = 530; // typed by the user
   let off = 50; // typed by the user
   let pay = price - off;
   show(pay);
8. 8.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
9. 9.🧪 Values right at a limit, like age 12 for “under 12”, are called ___. (a) easy cases (b) old cases (c) edge cases (d) phone cases
10. 10.⚙️ Which line does the processing (works out the answer)?
    line 1: let km = 12; // typed by the user
    line 2: let metres = km * 1000;
    line 3: show(metres); (a) line 2 (b) line 1 (c) line 3
11. 11.🔁 What does a loop do? (a) saves photos (b) draws icons (c) deletes code (d) repeats code
12. 12.Which of these app ideas solves no real problem? (a) a bill splitter (b) a medicine reminder (c) a page of random dots (d) a lost-and-found board
13. 13.🎯 Which app would help this user most: a child saving up for a cycle? (a) a pocket-money tracker (b) a recipe finder (c) a bus tracker (d) a big-text reader
14. 14.🖼️ How many parts (boxes) does this wireframe have?
    [ Save button ]
    [ title text ]
    [ Add button ]
    [ big picture ]
15. 15.🔢 In a quiz-app flow, which comes first: “see if it is right” or “see the final score”? (a) see if it is right (b) see the final score
16. 16.🔀 Why plan the user flow before building? (a) to skip testing (b) so each step is clear (c) to add more taps (d) to hide the buttons
17. 17.🔀 What does this sign-up rule show?
    let age = 17;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Welcome! (b) Ask a parent
18. 18.🧪 What is the ACTUAL result of Test 3?
    🎟️ Rule: a ticket costs 50 for children under 8, and 100 for everyone else.
    function price(age) {
      if (age <= 8) {
        return 50;
      }
      return 100;
    }
    Test 1: price(10) → expected 100
    Test 2: price(6) → expected 50
    Test 3: price(9) → expected 100
19. 19.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Match report”
    3. tap Back
    Which screen are you on now? (a) Search (b) Profile (c) Match report (d) Home
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 19 px
    Menu: 22 px
    Label: 15 px
    Title: 10 px
21. 21.🚀 What should an app ask for only when it really needs it? (a) a font (b) its name (c) a permission (d) its icon
22. 22.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
23. 23.👥 A library app has 190 readers, 300 librarians and 215 volunteers as users. How many more volunteers than readers are there?
24. 24.🔢 In a photo-post flow, which comes FIRST? (a) open the camera screen (b) write a caption (c) add a filter (d) post the photo
25. 25.🔍 Which is the odd one out? (a) the theme colours (b) the font size (c) the button colours (d) how easy sign-up is
26. 26.🎯 What is a user need? (a) a phone setting (b) a problem a user has (c) a colour theme (d) a type of button
27. 27.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Cart → Shop → Confirm → Pay
    Design B: Home → Address → Search → Menu (a) Design A (b) Design B
28. 28.🗒️ You are planning version 1 of a quiz app. Which feature can WAIT for a later version? (a) show a question (b) check the answer (c) background music (d) show the score
29. 29.🔐 Is this permission request fair or too much: calculator → location? (a) fair (b) too much
30. 30.🧩 Which part lets the user give the app information? (a) an input (b) an icon (c) a title (d) a logo
31. 31.✏️ Is this true of a wireframe or of a final design: looks like the real app? (a) a wireframe (b) a final design
32. 32.💡 Which app idea solves this problem: Grandpa forgets his tablets? (a) a lost-and-found board (b) a bill splitter (c) a homework planner (d) a medicine reminder
33. 33.🐞 Each comment says what its line SHOULD do. Which line has the bug?
    line 1: let score = 45; // start at 45
    line 2: score = score - 2; // take away 2
    line 3: score = score + 3; // add 2
    line 4: show(score); // show it (a) line 1 (b) line 3 (c) line 2
34. 34.Which of these is true of a tab bar? (a) goes to the last screen (b) hides extra links (c) opens a list of pages (d) sits at the bottom
35. 35.True or false: notes to read offline fits saving in the cloud. (a) True (b) False
36. 36.🔁 What is the LAST line this code shows?
    let names = ["Arjun", "Aman", "Riya", "Meera"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Arjun (b) Hi, Riya (c) Hi, Meera (d) Hi, Aman
37. 37.👥 A clinic app has 40 patients, 50 doctors and 230 nurses as users. How many users does it have in all?
38. 38.🔐 Is this permission request fair or too much: voice notes → microphone? (a) too much (b) fair
39. 39.🎯 Which app would help this user most: a teen whose money runs out by Friday? (a) a big-text reader (b) a pocket-money tracker (c) a recipe finder (d) a water reminder
40. 40.True or false: you write the store text at the release stage. (a) False (b) True

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