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What does the term "ViewModel" refer to in Android Architecture Components?

  • A UI layout
  • A component for managing UI-related data
  • A background process
  • A system service
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Which component is responsible for managing the lifecycle of an Android app?

  • Activity
  • Fragment
  • Service
  • ActivityManager
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Which method is used to bind a service to a component in Android?

  • bindService()
  • startService()
  • bindComponent()
  • bindStart()
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How can you define a new style in Android?

  • In strings.xml
  • In styles.xml
  • In layout.xml
  • In colors.xml
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How do you handle long-running operations in Android without blocking the UI?

  • Using background threads
  • Using main thread
  • Using UI thread
  • Using main activity thread
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How do you define a layout in XML for an Android application?

  • <layout>
  • <view>
  • <design>
  • <xml>
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What does the term "Fragment" refer to in Android development?

  • A UI component
  • A background service
  • A layout manager
  • A data storage option
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What is the purpose of a ViewGroup in Android?

  • To handle background tasks
  • To provide navigation
  • To store UI components
  • To display data
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How can you avoid ANR in Android?

  • Using background threads
  • Using heavy tasks on main thread
  • Blocking UI thread
  • Ignoring system events
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What is the use of an Intent in Android?

  • To pass data between activities
  • To draw the UI
  • To handle background tasks
  • To manage the lifecycle
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Which of the following is NOT a type of Context in Android?

  • Application Context
  • Activity Context
  • Service Context
  • Fragment Context
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How can you access a view by its id in Android?

  • findViewById()
  • getViewById()
  • findView()
  • getView()
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What is the default value of a boolean variable in Java?

  • TRUE
  • FALSE
  • null
  • 0
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Which component is NOT part of the Android application structure?

  • Activities
  • Fragments
  • Intents
  • Servers
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Which method is used to start an activity for a result in Android?

  • startActivity()
  • startActivityForResult()
  • startResultActivity()
  • startForResultActivity()
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Which annotation is used to define a ViewModel in Android?

  • @ViewModel
  • @Model
  • @View
  • @ViewModel
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How can you perform network operations in Android?

  • Using AsyncTask
  • Using Handler
  • Using IntentService
  • All of the above
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Which method is used to display a dialog in Android?

  • showDialog()
  • displayDialog()
  • createDialog()
  • presentDialog()
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Which of the following is NOT a lifecycle method of an activity in Android?

  • onCreate()
  • onPause()
  • onResume()
  • onTerminate()
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What is the use of the ProGuard tool in Android development?

  • To manage app dependencies
  • To optimize and obfuscate the code
  • To provide analytics
  • To handle UI rendering
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What is the purpose of the 'Looper' class in Android?

  • To manage threads
  • To manage message queues for threads
  • To handle UI rendering
  • To manage network requests
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How can you optimize battery usage in an Android application?

  • Using background services
  • Using JobScheduler and WorkManager
  • Using IntentService
  • Using multiple activities
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What is ADB in Android?

  • Android Debug Bridge
  • x
  • Application Development Bridge
  • Application Database
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What does the 'Parcelable' interface in Android do?

  • Serializes objects
  • Allows objects to be serialized and passed between activities
  • Manages app resources
  • Handles UI events
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What is the purpose of the Gradle build system in Android development?

  • To compile source code
  • To manage dependencies
  • To provide a testing framework
  • All of the above
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How do you implement a BroadcastReceiver in Android?

  • By extending the BroadcastReceiver
  • By implementing the BroadcastReceiver
  • By extending the Receiver
  • By implementing the Receiver
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What is the main component of the Android architecture?

  • Applications
  • Linux Kernel
  • Libraries
  • All of the above
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