Are You Good Enough To Pass This Quiz On Android

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  • 1/84 Questions

    A good example app should demonstrate most of the aspects of the application framework that are unique to Android.

    • True
    • False
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About This Quiz

The Android operating system is a mobile operating system developed by Google primarily for touch screen devices, such as cell phones and tablets. Are you conversant with the system and do you believe you can tackle the quiz below? Give it a try and find out how much you know. All the best.

Are You Good Enough To Pass This Quiz On Android - Quiz

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  • 2. 

    Google licensed some proprietary apps.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Google licensed some proprietary apps, indicating that the statement is true. This means that Google obtained legal permission to use and distribute certain apps that are protected by intellectual property rights. Licensing proprietary apps allows Google to provide these apps to its users, enhancing the functionality and features of its products and services.

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  • 3. 

    When you distribute your application commercially,you'll want to sign it with your own key.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When you distribute your application commercially, it is recommended to sign it with your own key. This ensures that the application comes from a trusted source and has not been tampered with. By signing the application with your own key, you can verify its authenticity and integrity, providing assurance to users that the application is legitimate and safe to use.

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  • 4. 

    An implicit intent is the sender specifies the type of receiver?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    An implicit intent is a type of intent in which the sender does not specifically specify the type of receiver. Instead, the sender only provides information about the action to be performed, and the system determines the appropriate receiver based on the available components that can handle the action. Therefore, the statement "an implicit intent is the sender specifies the type of receiver" is false.

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  • 5. 

    Android is based on Linux for the following reason.

    • Security

    • Portability

    • Networking

    • All of these

    Correct Answer
    A. All of these
    Explanation
    Android is based on Linux because it offers enhanced security, portability, and networking capabilities. Linux is known for its robust security features, making it an ideal choice for a mobile operating system like Android. Additionally, Linux's open-source nature allows for easy portability across different hardware platforms. Lastly, Linux's networking capabilities enable Android devices to seamlessly connect to the internet and other devices, providing a smooth user experience. Therefore, Android incorporates Linux to leverage these advantages, making "All of these" the correct answer.

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  • 6. 

    The manifest explains what the application consists of and glues everything together.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The manifest file is an essential component of an application as it provides important information about the application, such as its package name, version, permissions, and components. It acts as a glue that binds all the different parts of the application together, ensuring that they work harmoniously. Without the manifest, the application would lack structure and coherence, making it difficult for the system to properly install and run the application. Therefore, the statement "The manifest explains what the application consists of and glues everything together" is true.

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  • 7. 

    Creating a UI (User Interface) in Android requires careful use of...

    • Java and SQL

    • XML and Java

    • XML and C++

    • Dreamweaver

    Correct Answer
    A. XML and Java
    Explanation
    To create a UI in Android, XML is used to define the layout and design of the user interface elements such as buttons, text views, and images. XML allows for easy customization and separation of the UI from the application logic. On the other hand, Java is used to handle the functionality and behavior of the user interface elements. It is responsible for handling user interactions, performing calculations, and updating the UI based on the application logic. Therefore, the correct answer is XML and Java.

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  • 8. 

    Which of the following are not a component of an APK file?

    • Resources

    • All of these are components of the APK

    • Native Libraries

    • Dalvik executable

    Correct Answer
    A. All of these are components of the APK
    Explanation
    The correct answer is that all of the options listed (Resources, Native Libraries, Dalvik executable) are components of an APK file. An APK file is a package file format used by the Android operating system for distribution and installation of mobile apps. It contains all the necessary files and components needed to run the app on an Android device, including resources such as images, audio, and video files, native libraries for specific device architectures, and the Dalvik executable, which is the compiled code that runs on the Android virtual machine.

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  • 9. 

    To create an emulator, you need an AVD. What does it stand for?

    • Android Virtual Display

    • Android Virtual Device

    • Active Virtual Device

    • Application Virtual Display

    Correct Answer
    A. Android Virtual Device
    Explanation
    An emulator is a software program that allows a computer system to imitate another system. In the case of creating an emulator for Android, an AVD (Android Virtual Device) is required. An AVD is a configuration that defines the characteristics of a specific Android device, such as its hardware specifications and operating system version. By using an AVD, developers can test their applications on virtual Android devices without the need for physical devices. Therefore, the correct answer is "Android Virtual Device."

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  • 10. 

    App Widgets are can be place on the home screen by the user to check for updates are available?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    App Widgets can indeed be placed on the home screen by the user to check for updates. These widgets provide quick access to specific app features or information without the need to open the app itself. By placing an app widget on the home screen, users can easily monitor updates or receive real-time information without navigating through the app interface. Therefore, the given answer "True" is correct.

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  • 11. 

    The android OS comes with many useful system services, which include processes you can easily ask for things such as your..

    • All of these and more.

    • Location

    • Sensor Readings

    • WiFi? Hot Spots

    Correct Answer
    A. All of these and more.
    Explanation
    The correct answer is "All of these and more." The explanation is that the Android OS provides various system services that offer functionalities such as location services, sensor readings, and WiFi or hot spot connectivity. These services allow users to access and utilize features like GPS, accelerometer, gyroscope, and Wi-Fi connectivity for their applications and overall user experience. Additionally, the statement mentions "and more," indicating that there are additional system services available beyond the ones listed, further enhancing the capabilities of the Android OS.

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  • 12. 

    The Android SDK ships with an emulator.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because the Android SDK does indeed come with an emulator. The emulator allows developers to test their applications on virtual Android devices without the need for physical devices. This is helpful for debugging and ensuring compatibility across different devices and screen sizes.

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  • 13. 

    Lists and adapters are more organizational aids than user interface elements in Android.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Lists and adapters are indeed more organizational aids than user interface elements in Android. In Android, lists and adapters are used to efficiently display and manage large sets of data, such as a list of contacts or items in an online store. They help in organizing and presenting data in a structured manner, allowing users to easily navigate and interact with the information. While they do contribute to the user interface, their primary purpose is to assist in organizing and handling data rather than being standalone user interface elements.

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  • 14. 

    What operating system is used as the base of the Android stack?

    • Linux

    • Windows

    • Java

    • XML

    Correct Answer
    A. Linux
    Explanation
    The Android stack is built on top of the Linux operating system. Linux provides the core functionalities and services that are necessary for the Android operating system to run. It provides a stable and secure foundation for Android devices, allowing them to handle tasks such as managing hardware resources, running applications, and providing a user interface. Linux also enables Android to be open-source, allowing developers to customize and modify the operating system to suit their needs.

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  • 15. 

    The ___________ file specifies the layout of your screen.

    • Layout file

    • Manifest file

    • Strings XML

    • R file

    Correct Answer
    A. Layout file
    Explanation
    The layout file is the correct answer because it specifies the arrangement and positioning of the user interface elements on the screen. It defines the structure and appearance of the app's UI, including the placement of buttons, text fields, images, etc. The layout file is crucial in designing the visual layout of the app and is referenced by the code to inflate and display the UI elements on the screen.

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  • 16. 

    Android releases since 1.5 have been given nicknames derived how?

    • Adjective and strange animal

    • Food

    • Something that starts w/ 'A' -> Something that starts w/ 'B'...

    • American states

    Correct Answer
    A. Food
    Explanation
    Android releases since 1.5 have been given nicknames derived from food. Each release is named after a sweet or dessert in alphabetical order. Starting from 1.5 Cupcake, subsequent releases were Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, Jelly Bean, KitKat, Lollipop, Marshmallow, Nougat, Oreo, Pie, and the latest being Android 10. This naming convention adds a fun and memorable aspect to the Android operating system updates.

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  • 17. 

    What is contained within the Layout xml file?

    • Orientations and layouts that specify what the display looks like.

    • The permissions required by the app.

    • The strings used in the app.

    • The code which is compiled to run the app.

    Correct Answer
    A. Orientations and layouts that specify what the display looks like.
    Explanation
    The Layout XML file contains orientations and layouts that specify what the display looks like. This file is used in Android development to define the user interface of an app. It includes the arrangement and positioning of various elements such as buttons, text fields, and images on the screen. By defining the layout in XML, developers can easily modify and customize the appearance of the app's user interface without changing the underlying code.

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  • 18. 

    An Android application is a loose collection of content providers, activities, broadcast receivers, and services.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    An Android application is indeed a loose collection of content providers, activities, broadcast receivers, and services. These components work together to provide various functionalities and features within the application. Content providers allow data sharing between applications, activities provide the user interface and handle user interactions, broadcast receivers respond to system-wide events, and services perform background tasks. Therefore, the statement is true.

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  • 19. 

    The AWT and Swing libraries have been removed from the Android library set.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The AWT and Swing libraries have indeed been removed from the Android library set. AWT (Abstract Window Toolkit) and Swing are Java libraries primarily used for creating graphical user interfaces (GUIs) in desktop applications. However, these libraries are not compatible with the Android operating system, which uses a different framework called Android UI. Therefore, developers cannot use AWT and Swing to create GUIs for Android applications.

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  • 20. 

    The R file is a(an) generated file

    • Automatically

    • Manually

    • Emulated

    • None of the above

    Correct Answer
    A. Automatically
    Explanation
    The R file is a generated file because it is created automatically, without any manual intervention. It is not emulated or created by any other means.

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  • 21. 

    An activity can be thought of as corresponding to what?

    • A Java project

    • A Java class

    • A method call

    • An object field

    Correct Answer
    A. A Java class
    Explanation
    An activity in Java can be thought of as corresponding to a Java class. In Java, an activity is a class that represents a specific behavior or functionality within a program. It contains the code that defines how the activity should behave and what actions it should perform. Therefore, the correct answer is "A Java class."

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  • 22. 

    The XML file that contains all the text that your application uses.

    • Stack.xml

    • Text.xml

    • Strings.xml

    • String.java

    Correct Answer
    A. Strings.xml
    Explanation
    The correct answer is "strings.xml" because this file is commonly used in Android development to store all the text strings that are used in an application. It allows for easy localization and customization of the text without modifying the code. Other options such as "stack.xml" and "text.xml" do not have the same standard usage in Android development, and "string.java" is not a file used for storing text strings.

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  • 23. 

    What built-in database is Android shipped with?

    • SQLite

    • Apache

    • MySQL

    • Oracle

    Correct Answer
    A. SQLite
    Explanation
    Android is shipped with a built-in database called SQLite. SQLite is a lightweight and open-source relational database management system that is embedded within the Android operating system. It is widely used in Android app development as it provides a simple and efficient way to store and manage data on the device. SQLite is known for its small memory footprint, fast performance, and compatibility with SQL syntax, making it an ideal choice for handling local data storage in Android applications.

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  • 24. 

    Which one is not a nickname of a version of Andriod?

    • Cupcake

    • Gingerbread

    • Honeycomb

    • Muffin

    Correct Answer
    A. Muffin
    Explanation
    The nickname "Muffin" is not a version of Android. The other options, cupcake, Gingerbread, and Honeycomb, are all actual nicknames of different versions of the Android operating system.

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  • 25. 

    The Android Software Development Kit (SDK) is all you need to develop applications for Android.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The Android Software Development Kit (SDK) provides all the necessary tools and resources for developing applications for the Android platform. It includes libraries, documentation, sample code, and various development tools like compilers and debuggers. With the Android SDK, developers can create, test, and deploy their applications on Android devices. Therefore, the statement "The Android Software Development Kit (SDK) is all you need to develop applications for Android" is true.

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  • 26. 

    While developing Android applications, developers can test their apps on...

    • Emulator included in Android SDK

    • Physical Android phone

    • Third-party Emulators (Youwave, etc.)

    • All three options will work.

    Correct Answer
    A. All three options will work.
    Explanation
    Developers can test their Android applications on all three options mentioned: the emulator included in the Android SDK, a physical Android phone, and third-party emulators like Youwave. The emulator included in the Android SDK allows developers to simulate different devices and test their apps without the need for physical hardware. Physical Android phones provide real-world testing and allow developers to assess the performance and user experience on actual devices. Third-party emulators offer additional options for testing on different virtual devices. Therefore, all three options are viable for testing Android applications.

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  • 27. 

    What is an Activity?

    • A single screen the user sees on the device at one time

    • A message sent among the major building blocks

    • A component that runs in the background without any interface.

    • Context referring to the application environment.

    Correct Answer
    A. A single screen the user sees on the device at one time
    Explanation
    An activity in Android refers to a single screen that the user sees on the device at one time. It represents a specific user interface with its own layout, views, and functionality. Each screen or activity in an Android application is independent and can be navigated to and from by the user.

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  • 28. 

    There is no guarantee that an activity will be stopped prior to being destroyed.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because the Android system may destroy an activity without stopping it first. This can happen when the system is low on resources and needs to free up memory for other processes. In this case, the activity's onDestroy() method will be called directly, bypassing the normal lifecycle callbacks. Therefore, it is important for developers to handle the activity's cleanup and saving state properly in the onDestroy() method to ensure data integrity.

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  • 29. 

    Application contexts are independent of the activity life cycle.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because application contexts in Android are not tied to the activity life cycle. An application context is a global context that represents the entire application and remains consistent throughout the lifetime of the application. It can be accessed from any part of the application and is not affected by the creation, destruction, or lifecycle changes of individual activities. Therefore, the application context remains independent of the activity life cycle.

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  • 30. 

    Android is licensed under which open source licensing license?

    • Gnu's GPL

    • Apache/MIT

    • OSS

    • Sourceforge

    Correct Answer
    A. Apache/MIT
    Explanation
    Android is licensed under the Apache/MIT open source licensing license. This license allows users to freely use, modify, and distribute the Android operating system while also providing some patent protection. The Apache/MIT license promotes collaboration and encourages the development of derivative works, making it a popular choice for open source projects like Android.

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  • 31. 

    What part of the Android platform is open source?

    • Low-level Linux modules

    • All of these answers #The entire stack is an open source platform

    • Native libraries

    • Application frame work

    • Complete applications

    Correct Answer
    A. All of these answers #The entire stack is an open source platform
    Explanation
    The correct answer is "all of these answers #The entire stack is an open source platform." This means that all parts of the Android platform, including low-level Linux modules, native libraries, application framework, and complete applications, are open source. This allows developers to access and modify the source code, contributing to the continuous development and improvement of the platform.

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  • 32. 

    Android Applications must be signed.

    • After they are installed

    • Before they are installed

    • Never

    • Within two weeks of installation

    Correct Answer
    A. Before they are installed
    Explanation
    Android applications must be signed before they are installed. This is because the signing process ensures the authenticity and integrity of the application. When an application is signed, it is given a unique digital signature that identifies the developer. This signature is verified by the Android operating system during installation to ensure that the application has not been tampered with and comes from a trusted source. Without signing, users may be exposed to the risk of installing malicious or unauthorized applications on their devices.

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  • 33. 

    What file is responsible for glueing everthing together , explaining what the applicatin consists of, what its main building blocks are, ext...?

    • Layout file

    • Strings XML

    • R file

    • Manifest file

    Correct Answer
    A. Manifest file
    Explanation
    The Manifest file is responsible for glueing everything together in an application. It explains what the application consists of and what its main building blocks are. It contains important information such as the package name, permissions, activities, services, and receivers. The Manifest file acts as a blueprint for the application, allowing the system to understand and properly execute the different components of the app.

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  • 34. 

    What runs in the background and doesn't have any UI components?

    • Intents

    • Content Providers

    • Services

    • Applications

    Correct Answer
    A. Services
    Explanation
    Services run in the background and do not have any UI components. They are components of an Android application that perform long-running operations or handle tasks that do not require user interaction. Services can be used for tasks such as playing music in the background, downloading files, or updating data in a database. Unlike activities, services do not have a user interface and can run even when the application is not in the foreground. Therefore, services are the correct answer to the question.

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  • 35. 

    What is a funny fact about the start of Android?

    • It was orginaly going to be called UFO

    • The first version of Android was released without an actual phone on the market

    • Androids main purpose was to unlock your car door when you left the keys inside of it.

    • Was going to be a closed source application to make more money for its company.

    Correct Answer
    A. The first version of Android was released without an actual phone on the market
    Explanation
    The funny fact about the start of Android is that the first version was released without an actual phone on the market. This means that Android was initially developed and released as a standalone operating system without any specific hardware to run on. This is quite unusual as typically a new operating system is developed alongside a corresponding device. However, Android's early release without a phone shows the potential and ambition of the platform to become a versatile and widely used operating system across various devices.

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  • 36. 

    What is the driving force behind an Android application and that ultimately gets converted into a Dalvik executable?

    • Java source code.

    • R-file.

    • The emulator.

    • The SDK

    Correct Answer
    A. Java source code.
    Explanation
    The driving force behind an Android application that ultimately gets converted into a Dalvik executable is the Java source code. The Java source code is written by the developer and contains the instructions and logic for the application. This source code is then compiled into bytecode, which is then converted into a Dalvik executable that can run on the Android platform. The R-file is used for accessing resources in the application, the emulator is used for testing the application, and the SDK (Software Development Kit) provides the necessary tools and libraries for developing Android applications.

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  • 37. 

     Intents

    • Are messages that are sent among major building blocks

    • Trigger activities to being, services to start or stop, or broadcast

    • Are asynchronous

    • All of these

    Correct Answer
    A. All of these
    Explanation
    The correct answer is "all of these" because intents are messages that are sent among major building blocks, such as activities and services, to trigger them to start or stop. Intents can also be used to broadcast messages asynchronously. Therefore, all of the given options are true about intents.

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  • 38. 

    Android doesn't make any assumptions about a device's screen size, resolution, or chipset.:

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Android is an operating system that is designed to be compatible with various devices, including smartphones, tablets, and smart TVs. As a result, it does not make any assumptions about the screen size, resolution, or chipset of a device. This allows Android to be flexible and adaptable to different hardware configurations, ensuring a consistent user experience across a wide range of devices. Therefore, the given statement is true.

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  • 39. 

    There can be only one running activity at a given time.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    This statement is true because in most cases, only one activity can be actively running at a given time. This is because the system resources, such as the CPU and memory, are limited and can only handle one activity efficiently at a time. Running multiple activities simultaneously can lead to resource contention and reduced performance. However, some modern operating systems and processors support multitasking, which allows for concurrent execution of multiple activities by dividing the available resources efficiently.

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  • 40. 

    Which piece of code used in Android is not open source?

    • Keypad driver

    • WiFi? driver

    • Audio driver

    • Power management

    Correct Answer
    A. WiFi? driver
    Explanation
    The WiFi driver used in Android is not open source. This means that the source code for the WiFi driver is not freely available for modification and distribution. The reason for this could be that the WiFi driver may contain proprietary or licensed software components that restrict its open source distribution.

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  • 41. 

    What was the first phone released that ran the Android OS?

    • Google gPhone

    • T-Mobile G1

    • Motorola Droid

    • HTC Hero

    Correct Answer
    A. T-Mobile G1
    Explanation
    The T-Mobile G1 was the first phone released that ran the Android OS. It was a collaboration between T-Mobile, Google, and HTC and was released in 2008. The T-Mobile G1 introduced many of the features that are now common in Android smartphones, such as a touchscreen interface, a slide-out QWERTY keyboard, and access to the Google Play Store. It paved the way for the success of the Android operating system and set the stage for the wide variety of Android devices that followed.

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  • 42. 

    Which of the following is the most "resource hungry" part of dealing with Activities on Android

    • Closing an app

    • Suspending an app

    • Opening a new app

    • Restoring the most recent app

    Correct Answer
    A. Opening a new app
    Explanation
    Opening a new app is the most "resource hungry" part of dealing with Activities on Android. When a new app is opened, it requires the system to allocate resources such as memory, CPU, and battery power to load and run the new app. This process can be more demanding compared to other activities such as closing an app, suspending an app, or restoring the most recent app, which involve relatively less resource consumption.

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  • 43. 

    Although most people's first thought when they think of Android is Google, Android is not actually owned by Google. Who owns the Android platform? 

    • Oracle Technology

    • Dalvik

    • Open Handset Alliance

    • The above statement is incorrect and Android is owned by Google

    Correct Answer
    A. Open Handset Alliance
    Explanation
    The Open Handset Alliance owns the Android platform. While many people associate Android with Google, it is important to note that Google is just one of the many members of the Open Handset Alliance. This alliance is a consortium of several technology companies, including Google, that collaboratively develop and support the Android platform. Therefore, Android is not owned solely by Google, but rather by the collective efforts of the Open Handset Alliance.

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  • 44. 

    The Emulator is identical to running a real phone EXCEPT when emulating/simulating what?

    • Telephony

    • Applications

    • Sensors

    • The emulator can emulate/simulate all aspects of a smart phone.

    Correct Answer
    A. Sensors
    Explanation
    The correct answer is "Sensors". The emulator is able to emulate or simulate all aspects of a smartphone, except for the sensors. This means that while the emulator can replicate the functionality of a real phone in terms of telephony and applications, it cannot accurately replicate the behavior of sensors such as GPS, accelerometer, or gyroscope. This limitation is important to consider when developing or testing applications that heavily rely on sensor data.

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  • 45. 

    Services have any user interface components

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Services in computing typically do not have user interface components. Services are background processes or tasks that run on a computer system, often without direct user interaction. They are designed to perform specific functions or provide certain capabilities without requiring user input or displaying a user interface. Therefore, the statement that services have any user interface components is false.

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  • 46. 

    Android tries hard to ______________   low-level components, such as the software stack, with interfaces so that vendor-specific code can be managed easily. 

    • Confound

    • Absract

    • Modularize

    • Compound

    Correct Answer
    A. Absract
    Explanation
    Android tries hard to abstract low-level components, such as the software stack, with interfaces so that vendor-specific code can be managed easily. By abstracting these components, Android is able to provide a standardized interface that can be used by different vendors, allowing them to easily integrate their own code without affecting the overall functionality of the system. This abstraction helps in modularizing the code and ensuring that it remains independent of specific implementations or hardware.

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  • 47. 

    Broadcast receivers are Android’s implementation of a system-wide publish/subscribe mechanism, or more precisely, what design pattern?

    • Observer

    • Facade

    • Mediator

    • Command

    Correct Answer
    A. Observer
    Explanation
    Broadcast receivers in Android are used to implement a system-wide publish/subscribe mechanism. This mechanism allows components to subscribe to specific events or broadcasts and receive notifications when these events occur. The Observer design pattern is a perfect fit for this scenario, as it defines a one-to-many dependency between objects, where the subject (broadcast) notifies its observers (receivers) of any changes or events. Therefore, the correct answer is Observer.

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  • 48. 

    From a phone manufacturer's point of view, what makes Android so great?

    • Aside from some specific drivers, it provides everything to make a phone work

    • It makes the hardware work better

    • It allows them to compete with Apple's iPhone

    • It allows users to create apps, generating revenue for the companies

    Correct Answer
    A. Aside from some specific drivers, it provides everything to make a phone work
    Explanation
    Android is considered great from a phone manufacturer's point of view because it provides everything necessary for a phone to function, except for specific drivers. This means that manufacturers do not have to develop or provide additional software or functionalities, as Android already includes all the essential components. This allows manufacturers to focus on hardware aspects and design, making the phone work better. Additionally, Android's popularity and features allow manufacturers to compete with Apple's iPhone and attract users who can create apps, generating revenue for the companies.

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  • 49. 

    When did Google purchase Android?

    • 2007

    • 2005

    • 2008

    • 2010

    Correct Answer
    A. 2005
    Explanation
    Google purchased Android in 2005.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
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  • May 25, 2011
    Quiz Created by
    MarkusRibasTest

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