Supreme Android Development Test - 66+ MCQs: Android Development Quiz: Test Your Knowledge with Android Questions and Answers

1. Which component is responsible for background tasks in Android?

Activity

Service

Broadcast Receiver

Content Provider

2. What is the purpose of the Android NDK (Native Development Kit), and in which scenarios is it typically used?

The Android NDK is used for creating user interfaces in Android apps.

It is used for developing Android apps that primarily rely on web technologies.

The Android NDK allows developers to write parts of their app in native code (e.g., C or C++) for performance-critical tasks.

It is a tool for debugging Android apps.

3. Which layout manager is commonly used for creating user interfaces in Android?

FlowLayout

GridLayout

BoxLayout

LinearLayout

4. What is Android?

A type of smartphone

An operating system

A programming language

A web browser

5. What is the purpose of the Intent class in Android?

To represent an operation to be performed

To play music

To take photos

To send emails

6. What is the purpose of the 'onCreate' method in an Android 'Activity'?

To initialize the application context

To create a new 'Activity' instance

To perform one-time setup tasks when the 'Activity' is created

To handle user interactions

7. What is an APK in Android development?

Advanced Programming Kernel

Android Program Kit

Application Package File

Android Project Key

8. What is the primary function of the 'Logcat' tool in Android development?

Creating graphical user interfaces

Monitoring device hardware usage

Logging and debugging app output

Managing app resources

9. What does XML stand for in the context of Android app development?

eXtensible Markup Language

Extensible Mobile Language

Executable Mobile Layout

Expressive Mobile Language

10. What is an emulator in Android development?

A virtual machine for running Android apps on a computer

A physical device used for testing apps

A code editor for writing Android code

A tool for designing user interfaces

11. Which file contains the app's resources such as images and layouts in Android?

Java files

Gradle files

Manifest file

Res directory

12. Which Android component is responsible for managing the user interface and presenting information to the user?

Service

Activity

Receiver

Content Provider

13. What is the purpose of the Gradle build system in Android development?

To compile Java code

To manage project dependencies and build the app

To design user interfaces

To run unit tests

14. Which Android component is responsible for the user interface of an app?

Activity

Service

Broadcast Receiver

Content Provider

15. What is the purpose of the Toolbar in Android?

To hold a collection of tools

To display advertisements

To play audio files

To manage app navigation and actions

16. What is the purpose of the FloatingActionButton in Android?

To float on the screen

To add floating actions to an app

To display advertisements

To create a floating calendar

17. What is an Intent in Android?

A strong desire to do something

A message that represents an operation to be performed

An Android app

A type of Android device

18. What is the Android OS version codenamed 'Pie'?

Android 8.0

Android 9.0

Android 10.0

Android 11.0

19. Which XML attribute is used to specify the layout width and height of a view in Android?

android:layout_width

android:size

android:dimensions

android:layout_size

20. Which Android component is responsible for handling background tasks independently of the UI?

Service

Activity

Broadcast Receiver

Content Provider

21. Which XML file is used to define the user interface layout of an Android Activity?

AndroidManifest.xml

Layout.xml

UI.xml

Activity.xml

22. What is the AndroidManifest.xml file used for?

To store user data

To define the app's structure and behavior

To display advertisements

To create a backup of the app

23. Which file extension is commonly used for Android layout resource files?

.xml

.layout

.android

.res

24. Which layout manager is typically used for creating a scrollable list of items in Android?

LinearLayout

RelativeLayout

RecyclerView

GridLayout

25. What is the Android Intent system, and how is it used in app development?

The Android Intent system is a tool for measuring the performance of Android apps.

It is a messaging system that allows components to request functionality from other components, either within the same app or between different apps.

It is a database system for storing user preferences in Android apps.

It is a version control system for managing changes to app source code.

26. What is the purpose of the SharedPreferences in Android?

To share app settings with other apps

To store data temporarily in RAM

To display pop-up messages

To play music

27. What is the role of the Android Resource directory (res/) in an Android project, and what types of resources can be stored there?

The Android Resource directory is used for storing user data in Android apps.

It is a directory for storing audio files used in Android games.

The Android Resource directory (res/) is a location for storing various types of resources, including XML layouts, images, strings, and more. These resources are used to define the app's UI, behavior, and content.

It is a directory for storing app source code files.

28. Which component is responsible for managing data in Android?

Activity

Service

Broadcast Receiver

Content Provider

29. What is the Android Activity lifecycle, and what are its main states?

The Android Activity lifecycle refers to the sequence of states that an activity goes through during its lifetime. The main states are Created, Started, Resumed, Paused, Stopped, and Destroyed.

The Android Activity lifecycle is a set of animations and transitions that occur when switching between different activities.

The Android Activity lifecycle defines the permissions required for an activity to access device hardware.

The Android Activity lifecycle is only relevant to games and does not apply to regular Android apps.

30. What is the purpose of the 'res' directory in an Android project?

To store app source code

To store app data files

To store app resources like images, layouts, and strings

To manage app permissions

31. What component of an Android app defines the user interface and screens?

Activity

Service

Broadcast Receiver

Content Provider

32. What is the Android Gradle Plugin used for in Android app development?

Managing device hardware

Building and managing app dependencies

Creating user interfaces

Debugging app code

33. What is the purpose of the Content Provider component in Android?

To provide content recommendations

To manage app navigation

To share data between apps

To display advertisements

34. What is the Android Jetpack library, and how does it simplify Android app development?

Android Jetpack is a tool for optimizing app performance on older Android devices.

It is a library for creating augmented reality (AR) apps on Android.

Android Jetpack is a set of libraries, tools, and architectural guidance that simplifies complex tasks in Android app development, such as navigation, data persistence, and UI components.

It is a tool for analyzing and improving battery usage in Android apps.

35. What is an APK in the context of Android?

A file format for Android apps

A type of Android device

A programming language

An Android website

36. What is the purpose of the 'strings.xml' file in Android development?

To store app icon images

To define app layouts

To store user interface text and string resources

To manage app permissions

37. What is the Android design pattern used for separating the presentation layer from the business logic?

Model-View-Controller (MVC)

Model-View-Presenter (MVP)

Model-View-ViewModel (MVVM)

Model-View-Adapter (MVA)

38. What is the primary programming language used for Android app development?

Java

C++

Python

Swift

39. What is 'ViewModel' used for in Android app architecture?

Managing app permissions

Storing and managing UI-related data

Creating user interfaces

Handling background services

40. Which component is used to store and retrieve data in Android, providing a structured way to interact with a database?

Service

Broadcast Receiver

Content Provider

Activity

Android Development MCQ Test 2