Question 1

You can ________ an app so that you can provide localized strings in different languages. 
A) translate.
B) convert.
C) transcribe.
D) internationalize.

Accepted Answer

Internationalize is the best choice because it refers to the process of designing and developing an application in a way that can easily adapt to different languages and cultural conventions. This includes providing support for localized strings, date and time formats, and other aspects of the user interface that may vary across different languages and regions. The other options - translate, convert, and transcribe - do not fully capture the scope of what it means to internationalize an application.

Question 2

A ________ is a group of related files, such as code files, resource files and images that make up an app.
A) folder
B) directory
C) solution
D) project

Accepted Answer

A project is a group of related files that make up an app. Folders and directories are generic terms for containers used to organize files, and a solution is a higher-level container that can include multiple projects. However, for the specific context of an app, the term "project" is the most accurate and commonly used.

Question 3

________ are views that contain and arrange other views.
A) Layouts.
B) TextViews.
C) ImageViews.
D) None of the above.

Accepted Answer

Only layouts contain and arrange other views. TextViews and ImageViews are individual views that display text and images respectively.

Question 4

It’s considered good practice to define all strings, numeric values and other values in XML resource- files that are placed in the subfolders of a project’s resources folder.

Accepted Answer

The answer of It’s considered good practice to define all...

Question 5

You can have only one project open in the IDE at once.

Accepted Answer

Many modern Integrated Development Environments (IDEs) support having multiple projects open simultaneously, allowing developers to work across different projects without needing to close and reopen the IDE.

Question 6

With a ________ you can, for example, specify that one view should appear below another and be centered horizontally within this layout.
A) LinearLayout
B) CenteredLayout
C) RelativeLayout
D) None of the above.

Accepted Answer

The RelativeLayout allows for more flexibility in positioning views relative to each other, which includes centering views both vertically and horizontally. The LinearLayout only allows for views to be positioned in a linear orientation, such as vertically or horizontally, but not both at the same time. The CenteredLayout is not a valid layout in Android.

Question 7

The code editors for Java and XML help you write code quickly and correctly via ________—as you type, you can press Enter (or Return) to automatically finish a Java code element or an XML element name, attribute name or value that is currently highlighted in the code-completion window.
A) code-for-me
B) code-completion
C) automated coding
D) None of the above.

Accepted Answer

Code completion is a feature offered by modern code editors that helps the user to write correct code faster. Code completion suggests the next part of the code and intelligently auto-completes it as per context. It saves a lot of time and increases productivity.

Question 8

The ________ folder contains the files you'll edit to create your apps' GUIs and logic.
A) java
B) res
C) app
D) manifests

Accepted Answer

The "app" folder contains the main code and resources for your Android application, including the files you'll edit to create your app's GUI and logic.

Question 9

When the layout editor is open in Design view, the ________ appears at the right side of the IDE. This window shows the layouts and views (GUI compo-nents) that comprise the GUI and their parent-child relationships—for example, a layout (the parent) might contain many nested views (the children), including other layouts. 
A) Project window
B) Properties window
C) Palette 
D) Component Tree

Accepted Answer

The Component Tree shows the layouts and views that make up the GUI in a hierarchical tree structure, with parent-child relationships clearly displayed. The Project window shows files and resources in the project, the Properties window shows properties of the selected component, and the Palette contains GUI components that can be dragged and dropped onto the layout.

Question 10

Which of the following statements is true?
A) Extensible Markup Language (XML) is a natural way to express GUIs.
B) XML is human- and computer-readable text and, in the context of Android, helps you specify the layouts and components to use, as well as their attributes, such as size, position, color, text size, margins and padding.
C)You use XML files to store app resources, such as strings, numbers and colors.
D) All of the above are true.

Accepted Answer

All of the options are true statements. Option A is true, but may not be the most natural way to express GUIs. Option B is true as XML is both human and computer-readable and is used to specify layouts and components for Android apps. Option C is also true as XML files are used to store app resources such as strings, colors, and numbers. Therefore, the correct answer is D.

Question 11

Which of the following statements is false?
A) The Minimum SDK is the minimum Android API level that's required to run your app. This allows your app to execute on devices supporting that API level and higher.
B) Lower Minimum SDK values enable your app to run on more devices.
C) Generally you should target the highest API level on which your app can run.
D) You must disable newer features that are not available on older platforms when your app is installed on those platforms.

Accepted Answer

Generally, you should target the lowest API level that allows your app to run on the maximum number of devices, not the highest API level.

Question 12

The ________ window provides access to all of the project's files.
A) Organizer
B) Explorer
C) Project
D) None of the above.

Accepted Answer

The Project window is typically used in development environments to provide access to all of the project's files.

Question 13

Which of the following statements is false?
A) Android Studio’s layout editor enables you to build GUIs using drag-and-drop techniques. 
B) You can edit the GUI’s XML directly. 
C) In portrait orientation the device’s width is greater than its height.
D) Android’s Explore by Touch enables users to touch items on the screen and hear TalkBack speak the corresponding descriptive text

Accepted Answer

In portrait orientation, the device's height is greater than its width.

Question 14

Which of the following statements is false?
A) The package name normally begins with your company’s or institution’s Company Domain in reverse. This is followed by a dot (.) and the app’s name in all lowercase letters with any spaces removed. 
B) By convention, package names use only lowercase letters. 
C) The IDE sets the package name using the text you enter for Company Name and Company Domain. 
D) By default, Android Studio places new project folders in the subfolder An-droidStudioProjects in your user account directory.

Accepted Answer

Explanation: The IDE (Integrated Development Environment) like Android Studio sets the package name based on the text you enter for the app's name and the company domain, not the company name. The company domain is used in reverse order as part of the convention for creating package names, but the company name itself is not directly used to set the package name.

Question 15

Which of the following statements is false?
A) Android devices have various screen sizes, resolutions and pixel densities (that is, dots per inch or DPI), so you typically provide images in various resolutions that the operating system chooses based on a device’s pixel density. These are placed in drawable folders (in a project’s res folder) that store images with different pixel densities. 
B) Android Studio displays only one drawable folder containing the app’s drawable resources, even if your project contains resources for multiple densi-ties. 
C) If Android cannot find an image in the drawable folder that most closely matches the device’s pixel density, Android will display nothing for that image. 
D) Low-resolution images do not scale well. For images to render nicely, a high-pixel-density device needs higher-resolution images than a low-pixel-density device.

Accepted Answer

If Android cannot find an image in the drawable folder that most closely matches the device’s pixel density, it will scale the closest available image to fit the device's requirements rather than displaying nothing.

Question 16

Which of the following statements is false?
A) You can use a vertical LinearLayout to arrange an app’s text and image with each occupying half the LinearLayout’s vertical space. 
B) A LinearLayout also can arrange views horizontally. 
C) The default GUI created by Android Studio already contains an ImageView. 
D) You can use the layout editor’s Palette of views to drag and drop an Im-ageView onto a GUI, then configure its properties.

Accepted Answer

The default GUI created by Android Studio does not contain an ImageView, but does contain a TextView.

Question 17

Which type of app template is described by: "Used for a single-screen app (similar to Blank Activity) that occupies the entire screen, but can toggle visibility of the device's status bar and the app's app bar."
A) Empty Activity.
B) Fullscreen Activity.
C) Master/Detail Flow.
D) None of the above.

Accepted Answer

The template described is Fullscreen Activity, which is designed for a single-screen app that occupies the entire screen but can toggle visibility of the device's status bar and the app's app bar. Empty Activity creates a basic template with no pre-existing layouts or code, while Master/Detail Flow is used for apps that display a list of items and their details. None of the above are the best choice for this specific template.

Question 18

For a TextView font color, you should typically create a color resource using a color selected from Google’s Material Design color palette.

Accepted Answer

It is recommended to use colors from the Material Design color palette to ensure consistency with the overall design language. However, it is not mandatory to use a color resource, but it can help with maintaining a consistent color scheme throughout the app.

Question 19

In a layout XML file, attribute values that begin with @, such as @dimen/activity_vertical_margin are ________ with values defined in other files.
A) resources
B) variables
C) dimentions
D) None of the above.

Accepted Answer

Attribute values that begin with @ refer to resources defined in other files such as dimens, strings, colors, etc. They are accessed using the @ sign followed by the resource type and resource name, for example, @dimen/activity_vertical_margin accesses a dimension resource named activity_vertical_margin.

Question 20

Android Studio allows you to build your GUI by dragging and dropping views-such as Text-Views, Image-Views and Buttons-onto the ________.
A) GUI designer
B) layout designer
C) GUI editor
D) layout editor

Accepted Answer

Android Studio allows you to build your GUI by dragging and dropping views onto the layout editor. The layout editor is a visual tool that allows you to create and design the layout of your app's user interface.

Quiz 2: Welcome App

You can ________ an app so that you can provide localized strings in different languages.

A ________ is a group of related files, such as code files, resource files and images that make up an app.

________ are views that contain and arrange other views.

It’s considered good practice to define all strings, numeric values and other values in XML resource- files that are placed in the subfolders of a project’s resources folder.

You can have only one project open in the IDE at once.

With a ________ you can, for example, specify that one view should appear below another and be centered horizontally within this layout.

The code editors for Java and XML help you write code quickly and correctly via ________—as you type, you can press Enter (or Return) to automatically finish a Java code element or an XML element name, attribute name or value that is currently highlighted in the code-completion window.

The ________ folder contains the files you'll edit to create your apps' GUIs and logic.

Which of the following statements is true?

Which of the following statements is false?

The ________ window provides access to all of the project's files.

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is false?

Which type of app template is described by: "Used for a single-screen app (similar to Blank Activity) that occupies the entire screen, but can toggle visibility of the device's status bar and the app's app bar."

For a TextView font color, you should typically create a color resource using a color selected from Google’s Material Design color palette.

In a layout XML file, attribute values that begin with @, such as @dimen/activity_vertical_margin are ________ with values defined in other files.

Android Studio allows you to build your GUI by dragging and dropping views-such as Text-Views, Image-Views and Buttons-onto the ________.