App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 433 · 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 colour pair is easy to read? (a) white on dark green (b) dark blue on black (c) light grey on white (d) yellow on white
2. 2.🗒️ You are planning version 1 of a bus tracker. Which feature can WAIT for a later version? (a) see where the bus is (b) pick your bus stop (c) show arrival time (d) rate the driver
3. 3.👆 The user taps the button 3 times. What does the label show now?
   let on = false;
   button.onTap = function () {
     on = !on;
     if (on) {
       label.text = "ON";
     } else {
       label.text = "OFF";
     }
   }; (a) ON (b) OFF
4. 4.💡 Does an app idea like a medicine reminder solve a real problem? (a) No (b) Yes
5. 5.Which colour pair is easy to read? (a) dark blue on black (b) light grey on white (c) dark blue on white (d) yellow on white
6. 6.Which of these fits saving on the phone? (a) a class leaderboard (b) the sound on/off setting (c) photos on two devices (d) chat messages to friends
7. 7.Which of these requests is fair? (a) calculator → location (b) torch → contacts (c) timer → your photos (d) camera app → camera
8. 8.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
   Design A: Home → Search → Confirm → Menu → Item → Cart
   Design B: Home → Address → Offers → Pay
9. 9.🔍 Which is the odd one out? (a) a water reminder (b) a sleep tracker (c) a calculator (d) a step counter
10. 10.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 52 px tall
    Send button: 68 px tall
    Next button: 44 px tall (a) Help (b) Send (c) Next
11. 11.👆 The user types Kabir in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Well done, " + nameBox.text + "!";
    }; (a) Well done! (b) Well done, Kabir! (c) Well done, nameBox.text! (d) Kabir
12. 12.Which of these is a user need? (a) a search bar (b) a share button (c) a dark mode switch (d) “Small text is hard”
13. 13.🎨 Is this about UI or UX: whether users get lost? (a) UI (b) UX
14. 14.💾 Saving data in the cloud lets you ___. (a) never need a password (b) skip the internet (c) shrink the app (d) use it on any device
15. 15.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) background music (b) confetti effects (c) show a question (d) an avatar shop
16. 16.🔢 In a quiz-app flow, which comes LAST? (a) pick an answer (b) see if it is right (c) read a question (d) see the final score
17. 17.📅 An app team plans for 4 days, builds for 5 days, tests for 3 days and releases on 1 more day. How many more days does building take than testing?
18. 18.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) export to a file (b) add money spent (c) pie-chart colours (d) savings stickers
19. 19.True or false: a website has a web address. (a) False (b) True
20. 20.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
21. 21.🧩 How many buttons does this app screen have?
    [title] New Note
    [button] Next
    [text box] Due date
    [button] Start
    [switch] Dark mode
    [text box] Subject
    [text box] Notes
22. 22.🗒️ Why keep version 1 small? (a) to confuse users (b) to use up storage (c) to look bigger (d) to learn from users soon
23. 23.🧭 What does the back button usually do? (a) goes to the last screen (b) deletes the page (c) opens settings (d) closes all apps
24. 24.📊 Survey: which problem bugs you most? How many students voted in all?
    missing the bus: 22 votes
    forgetting birthdays: 25 votes
    forgetting homework: 24 votes
25. 25.True or false: a flashcard trainer is a tool app. (a) True (b) False
26. 26.🧪 Who else should try an app before release? (a) nobody (b) the app icon (c) only the coder (d) real users
27. 27.Which of these is true of a menu button? (a) shows 3 to 5 icons (b) switches main sections (c) sits at the bottom (d) opens a list of pages
28. 28.🧰 What number does this code show?
    function points(stars) {
      return stars * 10 + 5;
    }
    show(points(1) + points(3));
29. 29.🐞 This code has a bug. What number does it ACTUALLY show?
    line 1: let lives = 49; // start at 49
    line 2: lives = lives + 5; // add 5
    line 3: lives = lives - 2; // take away 1
    line 4: lives = lives - 4; // take away 4
    line 5: show(lives); // show it
30. 30.🐞 After fixing a bug you should ___. (a) delete the test (b) never test (c) release at once (d) test it again
31. 31.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
32. 32.🔍 Which is the odd one out? (a) spot a problem to solve (b) talk to possible users (c) sketch the screens (d) list what users need
33. 33.♿ A screen has 7 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
34. 34.🧰 What does this code show?
    function greet(name) {
      return "Hello, " + name + "!";
    }
    show(greet("Riya")); (a) Hello, Riya! (b) greet (c) Hello, name! (d) Riya
35. 35.🗒️ The first small, working version of an app is often called an ___. (a) URL (b) FAQ (c) CPU (d) MVP
36. 36.📱 Which one has a home-screen icon: an app or a website? (a) a website (b) an app
37. 37.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) add money received (b) show the balance (c) add money spent (d) savings stickers
38. 38.💾 Data saved only on the phone is lost when ___. (a) the phone is lost (b) the screen turns off (c) you send a message (d) the app is closed
39. 39.True or false: a walking map needs your location. (a) True (b) False
40. 40.⚙️ What number does this app show?
    let km = 2; // typed by the user
    let metres = km * 1000;
    show(metres);

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