Question 1

Which of the following statements is false?

Accepted Answer

A)   To reach the largest possible audience, you should consider designing your apps so that they can be customized for various locales and spoken languages. 
B)   You might also choose to use different colors, graphics and sounds based on the locale.
C)   When the user launches the app, Android automatically finds and loads the resources that match the device’s locale settings. 
D)   Designing an app so it can be customized is known as localization. Custom-izing an app’s resources for each locale is known as internationalization.  D

Question 2

When your app is installed on a device, its icon and name appear with all other installed apps in the ________.

Accepted Answer

A)   finder
B)   explorer
C)   launcher
D)   None of the above. C

Question 3

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

Accepted Answer

A) True 
 B)False  False

Question 4

When you open a layout XML file, the layout’s design appears in the layout editor and the layout’s views and their hierarchical relationships appear in the ________ window.

Accepted Answer

A)   Outline 
B)   Tree 
C)   Layout Editor 
D)   Component Tree

Question 5

Which of the following statements about adding an ImageView to the GUI by dragging it from the Palette’s Widgets section onto the canvas is false?

Accepted Answer

A)   When you drag a view onto the canvas, the layout editor displays orange guide lines, green guide lines and a tooltip. 
B)   The orange guide lines show the bounds of each existing view in the layout.
C)   The green guide lines indicate where the new view will be placed with respect to the existing views—by default, new views are added at the top of a vertical LinearLayout, unless you position the mouse below the orange box that bounds the layout’s bottommost view.
D)   The tooltip displays how the view will be configured if you drop it at the current position.

Question 6

When you first switch your device to French and enable TalkBack, Android will automatically download the ________ engine.

Accepted Answer

A)   English-to-French.
B)   Translations.
C)   French text-to-speech.
D)   French Transalation.

Question 7

Which of the following statements is false?

Accepted Answer

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.

Question 8

Which of the following statements is false?

Accepted Answer

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.

Question 9

Which of the following statements is false?

Accepted Answer

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.

Question 10

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

Accepted Answer

A)   translate.
B)   convert.
C)   transcribe.
D)   internationalize.

Question 11

Which of the following statements is false?

Accepted Answer

A)   When you need custom colors in your apps, Google’s Material Design guide-lines recommend using colors from the Material Design color palette.
B)   Colors are specified as RGB (red-green-blue)  or ARGB (alpha-red-green-blue)  values. 
C)   An RGB value consists of integer values in the range 1–100 that define the amounts of red, green and blue in the color, respectively. 
D)   Custom colors are defined in hexadecimal format, so the RGB components are values in the range 00 (the hexadecimal value for 0)  to FF (the hexadecimal value for 255) .

Question 12

Which of the following statements is false?

Accepted Answer

A)   You should use density-independent pixels for font sizes, and scale-independent pixels for dimensions of views and other screen elements.
B)   Defining your GUIs with density-independent pixels enables the Android platform to scale the GUI, based on the pixel density of a given device’s screen. 
C)   One density-independent pixel is equivalent to one pixel on a 160-dpi screen. 
D)   On a 240-dpi screen, each density-independent pixel will be scaled by a factor of 240/160 (i.e., 1.5) . So, a component that’s 100 density-independent pixels wide will be scaled to 150 actual pixels wide.

Question 13

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

A) True 
 B)False

Question 14

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.

Accepted Answer

A)   Project window
B)   Properties window
C)   Palette 
D)   Component Tree

Question 15

________ are views that contain and arrange other views.

Accepted Answer

A)   Layouts.
B)   TextViews.
C)   ImageViews.
D)   None of the above.

Question 16

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

Accepted Answer

A)   resources
B)   variables
C)   dimentions
D)   None of the above.

Question 17

For an ImageView there is no text for TalkBack to speak unless you provide it. It's considered good practice in Android to ensure that every view can be used with TalkBack by providing text for the ________ property of any view that does not display text.

Accepted Answer

A)   talkBack
B)   description
C)   hint
D)   contentDescription

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

A) True 
 B)False

Question 19

Which of the following statements is false?

Accepted Answer

A)   It’s considered good practice to place strings, string arrays, images, colors, font sizes, dimensions and other app resources in XML files within the sub-folders of the project’s res folder, so these resources can be managed separately from your app’s Java code. 
B)   If you externalize color values, it becomes more difficult to update all com-ponents that use the same color. 
C)   If you wish to localize your app in several languages, storing the strings sep-arately from the app’s code allows you to change them easily. 
D)   In your project’s res folder, the subfolder values contains a strings.xml file that’s used to store the app’s default language strings—English for our apps.

Question 20

Which of the following statements is false?

Accepted Answer

A)   When a GUI is displayed in the layout editor, you can use the Properties window below the Component Tree to configure the selected view's properties.
B)   You also can edit a view's most commonly used properties by double clicking the view in the canvas. The layout editor then displays a small dialog in which you can set the view's id property and other properties that depend on the specific view:
C)   For a LinearLayout, you can set the orientation to specify whether the layout's children are arranged in horizontal or vertical orientation.
D)   For an ImageView, you can set the src (source)  of the image to display.

Exam 2: Welcome App

Which of the following statements is false?

When your app is installed on a device, its icon and name appear with all other installed apps in the ________.

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

When you open a layout XML file, the layout’s design appears in the layout editor and the layout’s views and their hierarchical relationships appear in the ________ window.

Which of the following statements about adding an ImageView to the GUI by dragging it from the Palette’s Widgets section onto the canvas is false?

When you first switch your device to French and enable TalkBack, Android will automatically download the ________ engine.

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is false?

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

Which of the following statements is false?

Which of the following statements is false?

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.

________ are views that contain and arrange other views.

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

For an ImageView there is no text for TalkBack to speak unless you provide it. It's considered good practice in Android to ensure that every view can be used with TalkBack by providing text for the ________ property of any view that does not display text.

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

Which of the following statements is false?

Which of the following statements is false?