140+ Mobile Application Development MCQ Questions with Answers | MUJ Internal Exam Guide
Preparing for your Mobile Application Development internal exams at MUJ? This guide has got you covered! We’ve compiled 140+ carefully curated MCQ questions with answers to help you understand and revise key concepts like Android components, SQLite database, Room Persistence Library, project proposal planning, and much more.
Whether you're brushing up before an internal assessment or seeking deeper clarity on core topics, these multiple-choice questions will help reinforce your knowledge in a structured and easy-to-understand manner. All answers are clearly highlighted for quick revision. Let’s dive in!
Mobile Application Development MCQ Questions with Answers
Question 1
What is the primary programming language supported by Android for app development?
- C++
- Java
- ✅ Kotlin
- Python
Question 2
Which company developed Android?
- Apple
- Microsoft
- Amazon
Question 3
What is the name of Android’s virtual machine?
- Java VM
- Dalvik Virtual Machine
- ✅ ART
- Android VM
Question 4
Which file format is used to package Android apps?
- .exe
- .ios
- ✅ .apk
- .android
Question 5
Android applications are primarily developed in what type of development environment?
- Visual Studio
- ✅ Android Studio
- Xcode
- Eclipse
Question 6
Which component is NOT part of Android's architecture?
- Android Runtime
- Content Provider
- ✅ Fragment Manager
- Hardware Abstraction Layer
Question 7
What does the Android SDK provide?
- Only debugging tools
- ✅ Development tools, libraries, and APIs
- Frameworks for iOS apps
- Windows support
Question 8
What is the purpose of an Android Emulator?
- To run iOS applications
- To run Windows on Android
- ✅ To test Android applications without using a physical device
- To increase device RAM
Question 9
Which of the following is NOT a UI component in Android?
- Activity
- Service
- ✅ Intent
- TextView
Question 10
Which Android version was the first to introduce the Material Design concept?
- Android 2.3 (Gingerbread)
- Android 4.0 (Ice Cream Sandwich)
- Android 4.4 (KitKat)
- ✅ Android 5.0 (Lollipop)
Question 11
Which IDE is primarily used for Android application development?
- Eclipse
- IntelliJ
- Visual Studio
- ✅ Android Studio
Question 12
What is the purpose of the Android SDK?
- ✅ To provide development tools and APIs
- To enhance the device's performance
- To manage Android versions
- To increase battery efficiency
Question 13
Which component is essential for testing Android applications on different hardware configurations?
- Android Debug Bridge (ADB)
- ✅ Android Virtual Device (AVD)
- Android Performance Tuner
- Android Security Kit
Question 14
How do you add a library in Android Studio?
- Using the Android Package Manager
- ✅ By editing the build.gradle file
- Through direct download from the internet
- By emailing Google support
Question 15
What tool does Android Studio use to automate the build process?
- Maven
- ✅ Gradle
- Ant
- Jenkins
Question 16
What is a key feature of Android Studio that helps in tracking performance issues?
- Android Debugger
- Android Device Monitor
- ✅ Android Profiler
- Android Tracker
Question 17
What does the Android Emulator allow developers to do?
- Deploy applications directly to production
- ✅ Test applications without a physical device
- Generate code automatically
- Increase the speed of the processor
Question 18
Which file in an Android project specifies the dependencies and plugins?
- AndroidManifest.xml
- ✅ build.gradle
- settings.gradle
- config.xml
Question 19
What is a Gradle Wrapper in Android Studio?
- A type of layout
- ✅ A script for running Gradle tasks
- A tool to update Android Studio
- A security feature for Gradle scripts
Question 20
What allows Android developers to track the state of a device's CPU, memory, and battery?
- Android State Tracker
- Android Monitor
- ✅ Android Profiler
- Android Console
Question 21
What is the primary purpose of using threads in Android applications?
- To enhance the UI design
- ✅ To perform background operations efficiently
- To increase app storage
- To improve battery life
Question 22
Which class is used to create a new thread in Android?
- AsyncTask
- Handler
- Service
- ✅ Thread
Question 23
What problem might occur if too many threads are used simultaneously in an Android app?
- Overloading the user interface
- Draining the battery
- ✅ Overloading the CPU and memory
- None, the more threads, the better
Question 24
Which of the following is NOT a correct way to manage threads in Android?
- Using a single thread for all operations
- Using IntentService for background tasks
- Using AsyncTask for simple network operations
- ✅ Using Looper.prepare() in the main thread
Question 25
How does the AsyncTask class handle thread management?
- ✅ It uses a fixed thread pool executor by default
- It creates a new thread for each instance
- It manages a single thread for all instances
- It doesn't manage threads at all
Question 26
What Android component is specifically designed for repeating tasks in background threads?
- BroadcastReceiver
- Service
- ✅ Handler
- AlarmManager
Question 27
What is a common issue faced when using threads in Android that does not manage UI updates?
- Network overload
- Security breaches
- Inconsistent data states
- ✅ UI updates on the wrong thread
Question 28
Which method is best for a long-running operation that needs to communicate with the UI?
- Running a thread directly from an activity
- ✅ Using an IntentService with a ResultReceiver
- Using a Service with a Binder
- Using a static Handler
Question 29
What should be used to handle complex operations that require a thread to sleep or wait?
- Looper
- AsyncTask
- Service
- ✅ HandlerThread
Question 30
How can you ensure a background task does not block the user interface?
- Use the main application thread
- ✅ Use a dedicated background thread
- Use synchronous method calls
- Run heavy computations directly in the UI thread
Question 31
Which class is used for audio playback in Android?
- ✅ MediaPlayer
- AudioPlayer
- SoundPool
- AudioTrack
Question 32
What Android component is best for handling large sets of media files, like sound effects in a game?
- MediaPlayer
- MediaRecorder
- AudioManager
- ✅ SoundPool
Question 33
Which of the following is NOT a supported video format by the Android platform natively?
- MP4
- ✅ AVI
- MKV
- WEBM
Question 34
What is the primary advantage of using ExoPlayer over Android’s MediaPlayer?
- ExoPlayer uses less battery
- ✅ ExoPlayer supports more file formats and streaming protocols
- ExoPlayer is easier to set up
- ExoPlayer is part of the Android SDK
Question 35
How can you implement custom animations on media elements in Android?
- Using FrameLayout
- Using XML layouts
- ✅ Using Android Animation Framework
- Using IntentService
Question 36
What functionality does the MediaRecorder class provide?
- Audio editing capabilities
- Video playback functionality
- ✅ Audio and video recording capabilities
- Media streaming services
Question 37
Which API is recommended for complex audio streaming and manipulation in Android?
- MediaPlayer
- MediaSession
- AudioTrack
- ✅ ExoPlayer
Question 38
What is necessary to ensure smooth video playback in an Android application?
- High CPU and GPU usage
- Pre-loading video content into memory
- ✅ Implementing hardware acceleration
- Constant Internet connection
Question 39
How do you optimize multimedia content delivery over various network conditions?
- Use high-quality media files only
- ✅ Use multiple media files of different qualities
- Use a single media format for all conditions
- Avoid using media
Question 40
Which tool would you use to add filters and effects to video content in an Android app?
- VideoView
- VideoEditor
- ✅ OpenGL ES
- MediaEffects
Question 41
Which layer of the Android architecture provides the fundamental services such as security and memory management?
- Application Framework
- Libraries
- Android Runtime
- ✅ Linux Kernel
Question 42
What component in Android architecture is responsible for abstracting the hardware device drivers?
- ✅ Hardware Abstraction Layer (HAL)
- Device Driver Framework
- Service Manager
- Android SDK
Question 43
In the Android software stack, where are the native libraries located?
- Above the Linux Kernel
- Below the Application Framework
- ✅ Between the Android Runtime and the Linux Kernel
- Between the Application Framework and Android Runtime
Question 44
What is the main function of the Android Runtime?
- To compile the application source code
- To manage the application lifecycle
- To optimize the application performance
- ✅ To execute the application code
Question 45
Which of the following is NOT a component of the Application Framework layer in Android?
- Intent
- View System
- ✅ Dalvik Virtual Machine
- Content Providers
Question 46
How does the Linux Kernel support Android applications?
- By providing a graphical user interface
- ✅ By managing system resources and communications
- By running the applications directly
- By providing development tools
Question 47
What role do native libraries play in the Android architecture?
- They provide web services
- They provide user interface components
- ✅ They provide system functionalities like rendering and database
- They manage security protocols
Question 48
Which Android architecture layer interacts directly with hardware?
- Application Framework
- Android Runtime
- Libraries
- ✅ Hardware Abstraction Layer (HAL)
Question 49
What is the purpose of the Android Framework?
- To facilitate communication between apps
- ✅ To manage and provide access to Android system components
- To handle networking operations
- To execute user-generated scripts
Question 50
Which component is responsible for drawing and arranging user interface elements on the screen?
- Android SDK
- OpenGL
- ✅ Window Manager
- Media Framework
Question 51
What does ART stand for in Android development?
- Android Runtime Technology
- ✅ Android Runtime
- Advanced Runtime Technology
- Android Reboot Technology
Question 52
How does ART improve app performance compared to its predecessor, the Dalvik Virtual Machine (DVM)?
- By using Just-In-Time (JIT) compilation
- ✅ By using Ahead-Of-Time (AOT) compilation
- By reducing app file sizes
- By increasing battery efficiency
Question 53
Which feature of ART contributes to faster application startup times?
- Just-In-Time (JIT) compilation
- Garbage collection optimizations
- ✅ Ahead-Of-Time (AOT) compilation
- Reduced memory usage
Question 54
What significant change did ART bring to Android app handling compared to DVM?
- Introduction of background compilation
- Full use of device hardware capabilities
- ✅ Compilation of apps at installation time
- Enhanced security protocols
Question 55
Why is garbage collection in ART more efficient than in DVM?
- It uses a real-time garbage collection system
- It operates only when the app is idle
- ✅ It uses concurrent and incremental steps
- It completely eliminates the need for garbage collection
Question 56
How does ART handle the execution of bytecode?
- Translates bytecode into machine code at runtime
- Interprets bytecode without compiling it
- ✅ Translates bytecode into machine code before app installation
- Executes bytecode directly without translation
Question 57
What is the impact of ART's Ahead-Of-Time (AOT) compilation on app updates?
- Increases the update speed
- Reduces the update speed
- ✅ Increases update file size
- No impact on updates
Question 58
In the context of Android Runtime, what does JIT compilation do?
- Compiles entire applications during installation
- ✅ Compiles only the parts of the app being executed
- Prevents the need for compilation
- Reduces the need for maintenance
Question 59
What advantage does ART's garbage collection mechanism offer to the user experience?
- ✅ Ensures apps run faster without interruptions
- Provides more features within the apps
- Extends battery life of devices
- Ensures more secure app performance
Question 60
Which of the following is a benefit of the improvements made by ART over DVM?
- Higher developer fees
- Smaller community support
- ✅ Faster app performance
- More complex app development
Question 61
What is the primary role of the Android Software Development Kit (SDK)?
- To provide security features
- ✅ To provide development tools and APIs
- To manage the device's hardware
- To enhance device performance
Question 62
Which component of the Android SDK is used for database management in apps?
- Android Debugger
- Android NDK
- ✅ SQLite
- Android Emulator
Question 63
What feature does the Android NDK offer?
- Enhanced security protocols
- ✅ Access to low-level system routines
- High-level user interface components
- Advanced network management
Question 64
In Android development, what is the purpose of using a build.gradle file?
- To define the project's SDK versions
- To configure project dependencies
- To outline project metadata
- ✅ All of the above
Question 65
What is a major advantage of integrating Google Play Services in an Android application?
- It simplifies the code review process
- ✅ It provides access to Google APIs
- It reduces app size
- It enhances app security
Question 66
What tool does Android Studio provide for version control integration?
- ✅ Git
- SVN
- Mercurial
- CVS
Question 67
Which of the following is not a direct feature of the Android Software Development Platform?
- Memory management
- API libraries
- ✅ Hardware emulation
- User interface design tools
Question 68
How do Android developers typically manage app dependencies?
- Using the Android Manifest file
- Through the settings.gradle file
- ✅ Using the build.gradle file
- By manually copying libraries into the project
Question 69
What is the Android Jetpack?
- A set of libraries that enhance UI designs
- A performance enhancement tool for Android
- ✅ A suite of libraries, tools, and guides
- A new Android operating system
Question 70
Which tool in the Android SDK is specifically designed for testing Android interfaces?
- Android TestKit
- ✅ Espresso
- Robolectric
- JUnit
Question 71
What is the primary function of an Android Activity?
- To manage background tasks
- ✅ To manage app user interface
- To handle data storage
- To enhance app security
Question 72
Which component is responsible for performing long-running operations in the background in Android?
- Intent
- Activity
- ✅ Service
- BroadcastReceiver
Question 73
How do services communicate with activities in Android?
- ✅ Through Intents
- Direct function calls
- Shared preferences
- Direct database access
Question 74
What is the key difference between a 'Started' service and a 'Bound' service in Android?
- Started services perform single operations
- Started services run indefinitely
- ✅ Bound services are bound to an Activity
- Bound services run on a separate process
Question 75
What Android method is typically used to start a service?
- onStart()
- onResume()
- onCreate()
- ✅ startService()
Question 76
Which type of Android component is best suited for tasks that need to return a result to the calling Activity?
- BroadcastReceiver
- Service
- AsyncTask
- ✅ IntentService
Question 77
In Android development, what is an IntentService used for?
- Managing UI components
- Simplifying database operations
- ✅ Handling asynchronous tasks without a UI
- Enhancing graphics performance
Question 78
How can you stop a service that was started by startService()?
- Calling stopActivity()
- Calling onDestroy()
- ✅ Calling stopService()
- The service cannot be stopped manually
Question 79
What lifecycle method is called when an Activity becomes visible to the user?
- onResume()
- ✅ onStart()
- onVisible()
- onShow()
Question 80
What is the purpose of overriding the onBind() method in a service?
- ✅ To manage data binding between a service and activity
- To initiate the service
- To perform data validation
- To provide a user interface
Question 81
What is the primary purpose of an Android Broadcast Receiver?
- ✅ To receive and react to broadcast announcements
- To send data between activities
- To manage application layouts
- To store application data
Question 82
Which Android component is used to perform operations in the background and communicate results to the UI?
- Service
- AsyncTask
- ✅ IntentService
- Broadcast Receiver
Question 83
What is an Intent in Android?
- ✅ A messaging object between Android components
- A data storage solution
- A user interface component
- A development environment
Question 84
Which method is typically used to register a Broadcast Receiver dynamically in an Android application?
- ✅ registerReceiver()
- attachReceiver()
- bindReceiver()
- startReceiver()
Question 85
What type of Intent is used to broadcast across different Android applications?
- Explicit Intent
- Global Intent
- ✅ Implicit Intent
- Cross-App Intent
Question 86
How can you send a broadcast Intent from an Android app?
- ✅ Using the sendBroadcast() method
- Using the startActivity() method
- Using the sendIntent() method
- Using the broadcastIntent() method
Question 87
What is the correct way to declare a Broadcast Receiver in the Android manifest file?
- ✅ Within the
<receiver>tag - Within the
<service>tag - Within the
<activity>tag - Within the
<application>tag
Question 88
Which type of BroadcastReceiver is triggered by system-wide broadcast events such as screen off, battery low?
- ✅ System BroadcastReceiver
- User BroadcastReceiver
- Custom BroadcastReceiver
- Static BroadcastReceiver
Question 89
What is needed to ensure a Broadcast Receiver only receives intents from secure sources within an app?
- Use implicit intents
- ✅ Define intent filters securely
- Use explicit intents
- Set permissions in the manifest
Question 90
How do Intents facilitate communication in Android?
- By allowing applications to perform RPC calls
- By managing UI updates
- ✅ By passing messages and data between components
- By storing data persistently
Question 91
What is the primary role of a Content Provider in Android?
- ✅ To provide data to other applications
- To manage UI components
- To handle network operations
- To optimize app performance
Question 92
How do Android applications access data from a Content Provider?
- Using Intent
- Using direct database queries
- ✅ Using ContentResolver
- Using AsyncTask
Question 93
Which URI format is typically used to access data in a Content Provider?
- http://
- ✅ content://
- ftp://
- media://
Question 94
What is a common use case for implementing a Content Provider?
- ✅ Sharing data between multiple apps
- Storing temporary data
- Enhancing application security
- Increasing application speed
Question 95
Which Android component is necessary to query a Content Provider?
- Content Publisher
- Content Manager
- ✅ Content Resolver
- Content Distributor
Question 96
What method do you use to read data from a Content Provider?
- readContent()
- getContent()
- ✅ query()
- pull()
Question 97
Which of the following is NOT a method provided by the ContentResolver for interacting with Content Providers?
- update()
- delete()
- insert()
- ✅ execute()
Question 98
How are permissions typically handled with Content Providers?
- At the system level
- At the application level
- ✅ At the component level
- At the network level
Question 99
What is the benefit of using Content Providers over direct database access for data sharing?
- More secure
- Less resource-intensive
- Easier to implement
- ✅ Standardized data access across applications
Question 100
Which of the following best describes how Content Providers enhance data security?
- By encrypting all data
- By not allowing external access
- ✅ By defining strict access controls and permissions
- By storing data in the cloud
Question 101
What is the primary function of ConstraintLayout in Android UI design?
- To manage background tasks
- ✅ To constrain views to one another
- To display list-based data
- To handle complex animations
Question 102
Which Android layout is best used for complex user interfaces that require flat view hierarchies?
- LinearLayout
- FrameLayout
- RelativeLayout
- ✅ ConstraintLayout
Question 103
How does RecyclerView improve upon the traditional ListView?
- By using less memory
- By supporting more item views in a list
- ✅ By recycling views and handling more types of layouts
- By exclusively using vertical layouts
Question 104
What tool in Android Studio helps designers create UI layouts visually?
- ✅ Layout Editor
- Code Editor
- Asset Studio
- Android Debugger
Question 105
Which property should you use to optimize a TextView for better performance in a layout?
- layout_weight
- ✅ includeFontPadding
- minWidth
- textAllCaps
Question 106
In UI design, what is the advantage of using dp (density-independent pixels) over px (pixels)?
- Ensures uniform padding across all devices
- Provides better color depth
- ✅ Ensures size consistency across different screen densities
- Ensures faster rendering
Question 107
What Android feature allows UI elements to automatically adjust based on screen orientation?
- AutoLayout
- ConstraintSet
- OrientationListener
- ✅ Configuration qualifiers
Question 108
Which component is essential for creating animated transitions between different UI states?
- ✅ TransitionManager
- AnimationController
- TransitionInflater
- StateListAnimator
Question 109
How can developers ensure their Android apps handle different languages and cultures?
- By using the Android NDK
- ✅ By using res/values directories for localization
- By hard-coding string values
- By disabling language options
Question 110
What is a primary method for improving user interaction with touchscreens in Android UI design?
- Implementing haptic feedback
- ✅ Increasing button sizes
- Decreasing touch sensitivity
- Using only voice commands
Question 111
What Android class is primarily used for creating frame-by-frame animations?
- AnimatorSet
- FrameLayout
- ✅ AnimationDrawable
- BitmapFactory
Question 112
Which Android library provides extensive support for 2D and 3D graphics?
- Picasso
- Glide
- ✅ Vulkan
- Canvas
Question 113
What is the purpose of using ObjectAnimator in Android?
- To manage database animations
- ✅ To animate properties of objects over time
- To synchronize object states
- To animate XML layouts
Question 114
How can developers implement responsive animations based on user interactions?
- ✅ Using MotionEvent
- Using IntentService
- Using BroadcastReceiver
- Using ContentProvider
Question 115
Which tool is used to create complex animations and transitions in Android applications?
- ✅ MotionLayout
- ConstraintLayout
- CoordinatorLayout
- RelativeLayout
Question 116
What is the benefit of using VectorDrawable in Android for graphics?
- Reduces app size
- Enhances security
- ✅ Allows for drawable scaling without loss of quality
- Increases animation speed
Question 117
What Android component is essential for adding effects and transformations to images?
- ImageView
- ✅ ImageFilterView
- ImageSwitcher
- FilterOutputStream
Question 118
How do shaders, such as BitmapShader and LinearGradient, enhance graphics in Android?
- By allowing customization of RecyclerView
- ✅ By applying real-time effects to views
- By managing memory usage of graphics
- By reducing CPU usage for graphics processing
Question 119
Which feature should be used to handle screen orientation changes while maintaining graphic integrity?
- ✅ android:configChanges in AndroidManifest.xml
- onConfigurationChanged() method
- onOrientationChanged() method
- onDisplayChanged() method
Question 120
What is a primary method for optimizing graphic performance in Android games and apps?
- Reducing frame rate
- Using low-resolution textures
- ✅ Caching graphical assets
- Minimizing the use of transparency
Question 121
What is the primary database used natively in Android for local data storage?
- MySQL
- ✅ SQLite
- MongoDB
- Oracle
Question 122
Which Android component is used to facilitate access to data from a SQLite database?
- Content Provider
- SQLiteDatabase
- CursorLoader
- ✅ SQLiteOpenHelper
Question 123
What does ORM stand for, and which Android library provides ORM capabilities?
- ✅ Object-Relational Mapping; Realm
- Object-Request Model; SQLite
- Object-Resource Management; Firebase
- Object-Runtime Mapping; Room
Question 124
How can developers handle database version upgrades in Android applications?
- ✅ Using the onUpgrade() method in SQLiteOpenHelper
- By deleting and reinstalling the app
- By using the onUpdate() method in SQLiteDatabase
- By manually updating the database files
Question 125
What is the advantage of using transactions in SQLite databases?
- They enhance data security
- ✅ They speed up bulk insert operations
- They encrypt the database
- They simplify query writing
Question 126
Which method is primarily used to fetch data asynchronously from a SQLite database in Android?
- fetchData()
- asyncQuery()
- ✅ loadInBackground()
- queryAsync()
Question 127
Why is it recommended to use a ContentResolver with a ContentProvider for database operations?
- To improve the database performance
- To enforce data integrity
- To manage UI-thread operations
- ✅ To provide a uniform data access interface
Question 128
What is the benefit of using Room persistence library over direct SQLite access in Android?
- ✅ Room provides compile-time verification of SQL queries
- Room simplifies database creation
- Room increases the database speed
- Room requires less code
Question 129
How do developers typically manage complex relational data structures in Android using SQLite?
- ✅ By using joins in queries
- By using multiple databases
- By avoiding complex data structures
- By using only key-value pairs
Question 130
Which type of Loader was deprecated in Android and replaced by a more modern solution for loading data?
- AsyncTaskLoader
- ✅ CursorLoader
- IntentServiceLoader
- ManagedQueryLoader
Question 131
What is the first step in project proposal and planning for Android app development?
- Defining the budget
- Conducting market research
- Identifying target audience
- ✅ Setting project objectives
Question 132
Which method is essential for assessing the viability and scope of a new Android project?
- SWOT analysis
- ✅ Feasibility study
- Cost-benefit analysis
- Competitive analysis
Question 133
What is a key component of the development phase in Android app projects?
- Performing user acceptance testing
- Writing documentation
- Deploying the app to production
- ✅ Developing a marketing strategy
Question 134
How do Agile methodologies benefit Android app development projects?
- By providing a structured, waterfall approach
- ✅ By facilitating flexibility and rapid iteration
- By enforcing strict documentation
- By minimizing direct communication with clients
Question 135
What tool is commonly used for project tracking in Android app development?
- ✅ JIRA
- Trello
- Asana
- Basecamp
Question 136
In project management for Android development, what is the purpose of a sprint review?
- To adjust project budgets
- ✅ To present completed work and gather feedback
- To plan the next sprint
- To finalize project deliverables
Question 137
What is an effective strategy for managing project risks in Android app development?
- Avoiding any changes during development
- Using only proven technologies
- ✅ Regularly updating project risk assessments
- Limiting user feedback
Question 138
During the testing phase, what is crucial to ensure the Android application meets the necessary quality standards?
- Conducting performance testing only
- Focusing on visual testing
- ✅ Conducting comprehensive testing (unit, integration, UI/UX)
- Ignoring minor bugs
Question 139
What role does project presentation play in the final assessment of an Android development project?
- It demonstrates project viability only
- ✅ It provides a platform for stakeholder feedback
- It finalizes project documentation
- It officially closes the project
Question 140
Which practice is crucial for the continuous improvement of Android app development processes?
- Limiting feedback to major releases
- Avoiding iterative testing
- ✅ Gathering and analyzing user feedback
- Focusing on developer preferences only
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