App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 914 · 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.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
2. 2.🧰 What number does this code show?
   function total(price, qty) {
     return price * qty;
   }
   show(total(100, 2));
3. 3.🚀 What should an app ask for only when it really needs it? (a) a font (b) its name (c) a permission (d) its icon
4. 4.🧪 How many of these test cases pass?
   🎟️ Rule: a ticket costs 50 for children under 10, and 100 for everyone else.
   function price(age) {
     if (age <= 10) {
       return 50;
     }
     return 100;
   }
   Test 1: price(9) → expected 50
   Test 2: price(11) → expected 100
   Test 3: price(10) → expected 100
5. 5.⚙️ Which line does the processing (works out the answer)?
   line 1: let price = 530; // typed by the user
   line 2: let off = 10; // typed by the user
   line 3: let pay = price - off;
   line 4: show(pay); (a) line 1 (b) line 2 (c) line 4 (d) line 3
6. 6.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
7. 7.📊 Survey: which problem bugs you most? How many more votes did “missing the bus” get than “wasting pocket money”?
   missing the bus: 17 votes
   losing water bottles: 12 votes
   wasting pocket money: 16 votes
8. 8.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
9. 9.💡 Does an app idea like an app that just says hi solve a real problem? (a) Yes (b) No
10. 10.🗒️ A to-do app with no “add a task” feature is ___. (a) missing a must-have (b) ready to release (c) a nice extra (d) well planned
11. 11.🧩 In an app, what is the home page of an app? (a) an input (b) data (c) a button (d) a screen
12. 12.🧰 What number does this code show?
    function double(n) {
      return n * 2;
    }
    show(double(11));
13. 13.True or false: you spot a problem to solve at the idea stage. (a) True (b) False
14. 14.🖼️ In this wireframe (top to bottom), what is right above the tab bar?
    [ top bar ]
    [ search box ]
    [ menu icon ]
    [ filter buttons ]
    [ Add button ]
    [ tab bar ] (a) search box (b) Add button (c) top bar (d) filter buttons
15. 15.True or false: a water reminder is the best fit for a cook with no idea for dinner. (a) True (b) False
16. 16.🧩 Which input is best for choosing a volume level? (a) a switch (b) a text box (c) a title (d) a slider
17. 17.🗒️ The first small, working version of an app is often called an ___. (a) URL (b) FAQ (c) CPU (d) MVP
18. 18.🚀 Your app is at version 4.3.4. The next release adds a new feature. What is its version number? (a) 4.3.5 (b) 4.4.0 (c) 5.0.0 (d) 4.4.4
19. 19.Which of these is processing? (a) checking a password (b) a beep sound (c) speaking a command (d) tapping a button
20. 20.🧰 What does this code show?
    function greet(name) {
      return "Hello, " + name + "!";
    }
    show(greet("Arjun")); (a) Hello, Arjun! (b) Hello, name! (c) greet (d) Arjun
21. 21.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
22. 22.💾 What does this code show? (Positions start at 0.)
    let notes = ["Sports", "Hindi", "Art"];
    show(notes[0]); (a) Sports (b) Art (c) Hindi
23. 23.🔢 In a sign-up flow, which comes first: “enter the code sent” or “make a password”? (a) enter the code sent (b) make a password
24. 24.Which of these is true of a tab bar? (a) hides extra links (b) goes to the last screen (c) switches main sections (d) undoes one move
25. 25.True or false: a medicine reminder solves no real problem. (a) False (b) True
26. 26.🐞 Finding and fixing bugs is called ___. (a) downloading (b) designing (c) debugging (d) decorating
27. 27.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 48 px tall
    Send button: 52 px tall
    Back button: 56 px tall
    Help button: 32 px tall (a) Send (b) Back (c) Help (d) Cancel
28. 28.Which of these app ideas solves a real problem? (a) a button with no action (b) a page of random dots (c) an app that just says hi (d) a free study-room finder
29. 29.🔀 What is a user flow? (a) a charging cable (b) the path through screens (c) a colour theme (d) a type of font
30. 30.True or false: a big-text reader is the best fit for a child saving up for a cycle. (a) False (b) True
31. 31.True or false: a homework planner is the best fit for a student who keeps forgetting due dates. (a) True (b) False
32. 32.👥 A library app has 65 readers, 135 librarians and 20 volunteers as users. Which user group is the biggest? (a) volunteers (b) librarians (c) readers
33. 33.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) confetti effects (b) an avatar shop (c) show a question (d) background music
34. 34.🚀 A change from version 1.4.2 to 1.4.3 usually means ___. (a) a bug fix (b) a big redesign (c) a new app (d) a new feature
35. 35.📱 Where do people usually download phone apps from? (a) a web server (b) a charger (c) an app store (d) a printer
36. 36.🧩 In an app, what is a date picker? (a) an input (b) a button (c) a screen (d) data
37. 37.👆 What kind of event is this: the search box changes? (a) a text event (b) a tap event (c) a load event (d) a timer event
38. 38.🐞 After fixing a bug you should ___. (a) delete the test (b) test it again (c) release at once (d) never test
39. 39.Which of these is true of an app? (a) opens from a link (b) opens in a web browser (c) updates from the store (d) needs no installing
40. 40.🗒️ What is a must-have feature? (a) a nice extra (b) a sound effect (c) a colour theme (d) one the app cannot skip

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students