App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 511 · 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) a puzzle with levels (b) a times-table quiz (c) a racing challenge (d) a cricket run chase
2. 2.🗂️ What kind of app is an alarm clock? (a) a game (b) a health app (c) a tool app (d) a learning app
3. 3.♿ A screen has 10 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
4. 4.💡 Does an app idea like a free study-room finder solve a real problem? (a) No (b) Yes
5. 5.🔍 Which is the odd one out? (a) a spelling coach (b) a racing challenge (c) a times-table quiz (d) a flashcard trainer
6. 6.Which of these is true of an app? (a) has a web address (b) is installed on a phone (c) needs no installing (d) opens from a link
7. 7.📊 Survey: which problem bugs you most? How many students voted in all?
   forgetting birthdays: 24 votes
   losing water bottles: 16 votes
   forgetting homework: 7 votes
8. 8.🔀 Which badge does this quiz app show?
   let marks = 37;
   if (marks >= 80) {
     show("Gold");
   } else if (marks >= 50) {
     show("Silver");
   } else {
     show("Bronze");
   } (a) Gold (b) Bronze (c) Silver
9. 9.🔢 In a quiz-app flow, which comes FIRST? (a) tap “Start quiz” (b) see if it is right (c) pick an answer (d) see the final score
10. 10.🎯 Which app would help this user most: a teen whose money runs out by Friday? (a) a homework planner (b) a water reminder (c) a bus tracker (d) a pocket-money tracker
11. 11.🗒️ When should nice-to-have features be built? (a) before anything (b) on day one (c) after the must-haves (d) never
12. 12.📱 Where do people usually download phone apps from? (a) a charger (b) a web server (c) a printer (d) an app store
13. 13.🧪 What is the ACTUAL result of Test 1?
    🚚 Rule: delivery is free (0) when the order is 500 or more; otherwise it costs 40.
    function delivery(total) {
      if (total > 500) {
        return 0;
      }
      return 40;
    }
    Test 1: delivery(500) → expected 0
    Test 2: delivery(450) → expected 40
    Test 3: delivery(650) → expected 0
14. 14.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    no quiet study place: 19 votes
    forgetting birthdays: 7 votes
    forgetting homework: 10 votes (a) no quiet study place (b) forgetting homework (c) forgetting birthdays
15. 15.🚀 Which version is newer: 4.1.6 or 4.1.13? (a) 4.1.6 (b) 4.1.13
16. 16.🚀 Your app is at version 4.0.3. The next release adds a new feature. What is its version number? (a) 4.0.4 (b) 4.1.3 (c) 5.0.0 (d) 4.1.0
17. 17.👥 A cricket club app has 290 players, 180 coaches and 45 fans as users. How many users does it have in all?
18. 18.Which of these fits saving on the phone? (a) chat messages to friends (b) photos on two devices (c) a class leaderboard (d) a draft you are typing
19. 19.🔀 What does this sign-up rule show?
    let age = 12;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Welcome! (b) Ask a parent
20. 20.🗒️ You are planning version 1 of a homework planner. Which feature can WAIT for a later version? (a) pick a theme colour (b) set a due date (c) see tasks by day (d) add a homework task
21. 21.🗒️ What is a must-have feature? (a) a sound effect (b) a colour theme (c) a nice extra (d) one the app cannot skip
22. 22.🧩 How many buttons does this app screen have?
    [title] Add Homework
    [text box] Email
    [button] Start
    [button] Cancel
23. 23.🔘 Our rule: buttons are at least 48 px tall. The Next button is 20 px tall. How many px taller must it be?
24. 24.🔀 With if / else if / else, how many parts run? (a) all of them (b) none (c) two (d) only one
25. 25.🗂️ What kind of app is a torch? (a) a health app (b) a learning app (c) a tool app (d) a game
26. 26.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Offers → Confirm → Search → Pens → Cart
    Design B: Home → Shop → Size → Item (a) Design A (b) Design B
27. 27.🔐 Which permission does a homework photo scanner really need? (a) the camera (b) contacts (c) the microphone (d) location
28. 28.True or false: you add the buttons at the plan stage. (a) False (b) True
29. 29.🧩 In an app, what is tap to go Next? (a) a screen (b) a button (c) data (d) an input
30. 30.🧪 How many of these test cases pass?
    📝 Rule: a quiz is passed with 5 or more right answers.
    function result(right) {
      if (right >= 5) {
        return "Pass";
      }
      return "Try again";
    }
    Test 1: result(6) → expected Pass
    Test 2: result(5) → expected Pass
    Test 3: result(4) → expected Try again
31. 31.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Video”
    3. tap the Search tab
    4. open “Edit photo”
    5. tap the Profile tab
    Which screen are you on now? (a) Edit photo (b) Profile (c) Home (d) Video
32. 32.🧰 What does this code show?
    function greet(name) {
      return "Hi, " + name + "!";
    }
    show(greet("Aman")); (a) greet (b) Hi, Aman! (c) Aman (d) Hi, name!
33. 33.🔢 In a sign-up flow, which comes first: “type name and email” or “open the app”? (a) type name and email (b) open the app
34. 34.🔢 In a photo-post flow, which comes FIRST? (a) write a caption (b) open the camera screen (c) add a filter (d) take the photo
35. 35.👆 What kind of event is this: the user types a letter? (a) a load event (b) a text event (c) a timer event (d) a tap event
36. 36.🔢 In a quiz-app flow, which comes LAST? (a) tap “Start quiz” (b) pick an answer (c) see the final score (d) read a question
37. 37.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Video”
    3. open “Score card”
    4. tap the Settings tab
    Which screen are you on now? (a) Video (b) Settings (c) Feed (d) Score card
38. 38.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
    [title] Add Homework
    [text box] City
    [slider] Text size
    [button] Save
39. 39.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(40, 2));
40. 40.🗒️ A to-do app with no “add a task” feature is ___. (a) ready to release (b) a nice extra (c) well planned (d) missing a must-have

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