Question 1

At the time Android How to Program, 3/e was written, there were over 1.6 million apps in Google Play, and the number is growing quickly.

Accepted Answer

The passage states that "At the time Android How to Program, 3/e was written, there were over 1.6 million apps in Google Play," so the correct answer is B, which represents 1.6 million.

Question 2

With web services, you can create ________, which enable you to rapidly develop apps by quickly combining complementary web services, often from different organizations and possibly other forms of information feeds.

Accepted Answer

Mashups are the combination of complementary web services, often from different organizations and other forms of information feeds to create new applications.

Question 3

Which of the following is a set of APIs for incorporating Google functionality into your apps?

Accepted Answer

Google Play Services is a set of APIs that provides functionalities like Maps, Google Sign-in, Firebase services, and more. It allows developers to add features that integrate with Google services into their apps. Both A and B are not the correct options as Google Android Services and Google App Services do not exist.

Question 4

Which Android KitKat feature is described by the following: "The status bar at the top of the screen and the menu buttons at the bottom can be hidden, allowing your apps to fill more of the screen. Users can access the status bar by swiping down from the top of the screen, and the system bar (with the back button, home button and recent apps button) by swiping up from the bottom."

Accepted Answer

This feature is called Immersive Mode in Android KitKat.

Question 5

Which of the following is a key technlogy for implementing Android apps?

Accepted Answer

All three of these options are essential for implementing Android apps. Android Studio provides a user-friendly development environment, Java is the primary programming language for Android apps, and the Android SDK contains tools and APIs necessary for developing, testing, and deploying Android apps. Therefore, the best choice is D – all of the above.

Question 6

GUI programming in Java is ________ -in this book, you'll write apps that respond to various user-initiated events such as screen touches.

Accepted Answer

GUI programming in Java is event-driven, meaning that the code responds to various user-initiated events such as screen touches, mouse clicks, keyboard inputs, and window resizing. The program reacts to these events by executing a specific set of instructions or code blocks. Therefore, the correct answer is D) event driven. The other options, A) user-driven, B) programmer-driven, and C) IDE driven, are not accurate descriptions of GUI programming in Java.

Question 7

Which of the following statements is true?

Accepted Answer

All of the statements are true. Android apps are indeed developed with Java, which is a widely used programming language. Java was chosen for the Android platform because it is powerful, free, open source, and used by millions of developers. Experienced Java programmers can easily get started with Android development using Google's Android APIs and other third-party APIs.

Question 8

Android uses a collection of ________, which are named groups of related, predefined classes. Some of these are Android specific, some are Java specific and some are Google specific. They allow you to conveniently access Android OS features and incorporate them into your apps.

Accepted Answer

Android uses packages, which are named groups of related, predefined classes. These packages allow developers to conveniently access Android OS features and incorporate them into their apps. Some of these packages are Android specific, some are Java specific, and some are Google specific.

Question 9

In addition to directly programming portions of your apps, you'll also use the Android Studio IDE to conveniently ________ predefined objects such as buttons and textboxes into place on your screen, and label and resize them.

Accepted Answer

Android Studio IDE allows you to drag and drop predefined objects such as buttons and textboxes into place on your screen, and label and resize them for convenience.

Question 10

One of the most significant new features in Android 2.3 was support for ________ -a short-range wireless connectivity standard that enables communication between two devices within a few centimeters. It can be used for payments (for example, touching your Android device to a payment device on a soda machine), exchanging data such as contacts and pictures, pairing devices and accessories and more.

Accepted Answer

Near-field communication (NFC) is a short-range wireless connectivity standard introduced in Android 2.3 that enables communication between two devices within a few centimeters. NFC can be used for payments, exchanging data such as contacts and pictures, pairing devices and accessories, and more.

Question 11

________ are software components stored on one computer that can be accessed by an app (or other software component) on another computer over the Internet.

Accepted Answer

Web services are specifically designed for communication over the internet and are used to provide software components that can be accessed by remote applications on different computers. GUIs and classes are not necessarily designed exclusively for this purpose.

Question 12

________ is now Google's preferred Android IDE. It's based on the JetBrains IntelliJ IDEA Java IDE.

Accepted Answer

Android Studio is now Google's preferred Android IDE, as it is specifically designed for Android development and based on the JetBrains IntelliJ IDEA Java IDE. Eclipse used to be popular, but Google has since shifted its focus to Android Studio. Visual Studio is a popular IDE for developing Windows applications but is not specifically designed for Android development.

Question 13

In 2007, the ________ was formed to develop, maintain and evolve Android, driving innovation in mobile technology and improving the user experience while reducing costs.

Accepted Answer

The Open Handset Alliance was formed in 2007 specifically to develop, maintain, and evolve Android as a mobile technology platform. The other answer choices do not accurately describe the purpose or composition of the alliance.

Question 14

Unlike Apple’s ________ iOS, which is available only on Apple devices, An-droid is available on devices from dozens of original equipment manufacturers (OEMs) and through numerous telecommunications carriers worldwide.

Accepted Answer

Apple's iOS is proprietary, meaning it is owned and controlled by Apple, unlike Android, which is open source and can be used by various manufacturers.

Question 15

Which Android Marshmallow feature is described by: "Tap and hold the home button while inside any app and Google Now inspects what's on the screen and presents relevant information in the form of cards. For example, in a text message discussing a movie, a card containing information about that movie is displayed.

Accepted Answer

This feature is called "Now on Tap," where users can tap and hold the home button to access Google Now cards with relevant information about what's on the screen.

Question 16

________ allows you to use software and data stored in the "cloud"-i.e., accessed on remote computers (or servers) via the Internet and available on demand-rather than having it stored on your desktop, notebook computer or mobile device.

Accepted Answer

Cloud computing is the only option that describes the use of software and data stored remotely and accessed via the Internet. Desktop computing refers to traditional computing on a local machine, while sky computing is not a commonly used term in the industry.

Question 17

One benefit of developing Android apps is the openness of the platform. The operating system is ________ and free. This allows you to view Android's source code and see how its features are implemented.

Accepted Answer

Android is an open source operating system, which means that its source code is freely available for anyone to view, modify and distribute. This allows developers to get a deeper understanding of the platform and build custom solutions on top of it.

Question 18

Which gesture is used to flip item-by-item through a series, such as photos?

Accepted Answer

Swipe is the gesture used to flip item-by-item through a series, such as photos. This gesture involves quickly moving your finger across the screen in the direction you want to scroll. Drag is used to move a single item, long press is used to access additional options for an item, and pinch zoom is used to zoom in or out on an item. Therefore, option D is the best choice for flipping through a series of items.

Question 19

What key Android Ice Cream Sandwich developer feature is described by the following? "Using the camera, compatible devices can determine the positioning of the user's eyes, nose and mouth. The camera also can track the user's eye movement, allowing you to create apps that change perspective, based on where the user is looking."

Accepted Answer

The key Android Ice Cream Sandwich developer feature described is face detection, which allows the camera to determine the positioning of the user's eyes, nose, and mouth, and track eye movement. This feature is often used in creating apps for augmented reality or facial recognition.

Question 20

Which of the following was a new Android 3.0 developer feature:

Accepted Answer

All three features (fragments, persistent Action Bar, multicore processor architecture) were new in Android 3.0 for developers.

Quiz 1: Introduction to Android