Kotlin Program - Practice Test

[#111] Which of the following constraint types expands a view only as much as needed to fit its contents?

(A) Wrap content

(B) Match constraint

(C) Fixed constraint

(D) Baseline constraint

Correct Answer

(A) Wrap content

[#112] Which of the following is not a reason for minimizing calls to findViewById()?

(A) Every time findViewById() is called, it traverses the view hierarchy.

(B) findViewById() runs on the main or UI thread.

(C) These calls can slow down the user interface.

(D) Your app is less likely to crash.

Correct Answer

(D) Your app is less likely to crash.

[#113] How do you enable your project to use navigation components?

(A) Make sure every Activity class extends the class NavigationActivity.

(B) Use the NavigationController class as the launch activity.

(C) Add uses-navigation to the AndroidManifest.xml file.

(D) Add dependencies for navigation-fragment-ktx and navigation-ui-ktx in the build.gradle (module) file.

Correct Answer

(D) Add dependencies for navigation-fragment-ktx and navigation-ui-ktx in the build.gradle (module) file.

[#114] Where are the possible navigation routes through your app defined?

(A) In a file (often called navigation.xml) in the res > layout folder.

(B) In a file (often called navigation.xml) in the app > navigation folder.

(C) In a file (often called navigation.xml) in the res > navigation folder.

(D) In the AndroidManifest.xml file, under the element.

Correct Answer

(C) In a file (often called navigation.xml) in the res > navigation folder.

[#115] Where do you set the ID of a fragment to be used in navigation?

(A) In the fragment layout file, either by setting the ID attribute in the design editor or in the layout XML file in the res > layout folder.

(B) In the project navigation file, either by setting the ID attribute in the navigation graph or in the navigation.xml file in the res > navigation folder.

(C) You need to set the ID in both the navigation file for the app and the layout file for the fragment.

(D) Set the ID variable in the relevant Fragment class.

Correct Answer

(B) In the project navigation file, either by setting the ID attribute in the navigation graph or in the navigation.xml file in the res > navigation folder.

Kotlin Program - Study Mode

[#111] Which of the following constraint types expands a view only as much as needed to fit its contents?

Correct Answer

[#112] Which of the following is not a reason for minimizing calls to findViewById()?

Correct Answer

[#113] How do you enable your project to use navigation components?

Correct Answer

[#114] Where are the possible navigation routes through your app defined?

Correct Answer

[#115] Where do you set the ID of a fragment to be used in navigation?

Correct Answer