D308 Mobile Application Development (Android)
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Free D308 Mobile Application Development (Android) Questions
1. When an updated version of software appears, if it is able to access and modify data files from older versions of the software, this is known as
- maintaining accessibility
- maintaining compatibility
- maintaining backward compatibility
- maintaining forward compatibility
Explanation
When software can access and modify data from older versions, it is said to maintain backward compatibility. This ensures that users upgrading to newer software versions do not lose access to existing files, settings, or data. Backward compatibility is crucial for user trust and smooth transitions between software versions, reducing the need for data conversion or migration and maintaining continuity in user experience and productivity.
2. Which of the following best describes the primary characteristic of hybrid mobile applications?
- They are built exclusively using native programming languages.
- They utilize web technologies within a native container.
- They require separate codebases for each platform.
- They are only compatible with iOS devices.
Explanation
Hybrid mobile applications primarily utilize web technologies within a native container. They are built using web languages such as HTML, CSS, and JavaScript but wrapped inside a native shell that allows access to device features like GPS or camera. This enables hybrid apps to be deployed across multiple platforms while maintaining some native-like capabilities, though they generally sacrifice performance compared to fully native applications.
3. What is a significant limitation of web applications compared to native applications?
- Enhanced offline capabilities
- Full access to device hardware features
- Limited access to device features and offline functionality
- Better performance on mobile devices
Explanation
A major limitation of web applications is their limited access to device features and offline functionality. Unlike native apps that can directly interact with hardware components such as GPS, cameras, and sensors, web apps run within a browser and are restricted by its capabilities. Additionally, most web apps require an active internet connection to function properly, limiting their usability in offline or low-connectivity environments.
4. Which general-purpose programming language is used to develop applications for Google's Android smartphone?
- Python
- Perl
- C
- Java
Explanation
The primary general-purpose programming language used to develop applications for Google’s Android platform is Java. It has long been the official language for Android development, offering strong object-oriented features, platform independence, and extensive library support. Although Kotlin is now also widely used, Java remains fundamental to Android’s architecture and is fully supported by Android Studio, Google’s official development environment.
5. What is the primary purpose of the Android Emulator in mobile application development?
- To create physical Android devices for testing
- To simulate various Android device configurations for app testing
- To compile Java code into Android applications
- To manage app distribution on the Google Play Store
Explanation
The Android Emulator is primarily used to simulate various Android device configurations for app testing. It allows developers to test applications across different screen sizes, resolutions, Android versions, and hardware capabilities without needing multiple physical devices. This tool helps identify bugs, performance issues, and layout problems early in the development process, ensuring that the app behaves correctly under various conditions.
6. What is the mobile operating system for Windows?
- Windows 10 Mobile
- Windows Cellular
- Android
- Apple
Explanation
The mobile operating system developed by Microsoft for smartphones and tablets is Windows 10 Mobile. It was designed to provide a consistent experience across mobile and desktop devices by integrating with the Windows 10 ecosystem. Windows 10 Mobile supported features like the Continuum mode, which allowed mobile devices to function similarly to PCs when connected to external displays. However, it was eventually discontinued in favor of Android partnerships.
7. Which of the following is not a characteristic Hybrid applications possess?
- Native Wrapper
- Mixes native and web components
- One-platform
- Access Device Capabilities
Explanation
The characteristic that hybrid applications do not possess is being one-platform. Hybrid applications are designed to work across multiple platforms (such as Android and iOS) using a single codebase. They are built with web technologies like HTML, CSS, and JavaScript but run inside a native wrapper, allowing them to access some device features. Therefore, unlike native apps, they are not restricted to one platform but rather aim for cross-platform compatibility.
8. During the planning phase of mobile application development, which of the following elements is essential to identify in order to ensure the app meets user needs?
- Monetization strategies
- Target audience
- Marketing channels
- Development tools
Explanation
During the planning phase of mobile app development, identifying the target audience is crucial to ensuring that the app meets user needs. Understanding the intended users helps developers design features, interfaces, and functionalities that appeal to their preferences, behaviors, and expectations. It also guides content strategy, user experience (UX) design, and marketing approaches. Without a clearly defined target audience, developers risk building an app that fails to attract or retain users effectively.
9. What is a primary requirement for an app to be published on the Google Play Store?
- The app must be developed using Kotlin or Java
- The app must pass a security review by Google
- The app must be free of bugs and errors
- The app must include in-app purchases
Explanation
Before being published on the Google Play Store, an app must pass a security review by Google. This review checks the app for malware, policy violations, and harmful content to protect users and maintain Play Store integrity. The review process includes both automated and manual checks. While Google recommends Kotlin or Java for Android development, apps can be built in other languages, and in-app purchases are optional, not mandatory.
10. Native applications have the following characteristics, except ________.
- They are expensive to develop and support.
- They can be run on multiple operating systems without modifications.
- They are highly secure and easy to use.
- They can use the unique capabilities of the hardware device.
- They can run only a single type of device.
Explanation
The incorrect statement is “They can be run on multiple operating systems without modifications.” Native applications are designed specifically for one platform (e.g., Swift for iOS or Kotlin for Android), meaning they cannot run on multiple operating systems without being rewritten. Native apps, however, offer superior performance, security, and access to device-specific features, which makes them highly reliable for platform-optimized functionality.
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