Kotlin Program - Practice Test

[#116] Where do you define the items for a menu?

(A) It depends on where the menu will be shown. For a navigation drawer menu, add an <item> tag for each menu item in the menu.xml file in the res > drawer folder. For the options menu, add an <item> tag for each menu item in the menu.xml file in the res > options folder.

(B) In the layout file for the fragment or activity that displays the menu, add a <menu> tag that contains <item> tags for each item.

(C) In a menu_name.xml file in the res > menu folder, add an <item> tag for each menu item. Create separate XML files for each separate menu.

(D) In the AndroidManifest.xml file, add a <menus> tag that contains a <menu> tag for each menu, that in turn contains an <item> tag for each menu item.

Correct Answer

(C) In a menu_name.xml file in the res > menu folder, add an <item> tag for each menu item. Create separate XML files for each separate menu.

[#117] Your app contains a physics simulation that requires heavy computation to display. Then the user gets a phone call. Which of the following is true?

(A) During the phone call, you should continue computing the positions of objects in the physics simulation.

(B) During the phone call, you should stop computing the positions of objects in the physics simulation.

(C) Boath A and B

(D) None of these

Correct Answer

(B) During the phone call, you should stop computing the positions of objects in the physics simulation.

[#118] To make a class lifecycle-aware through the Android lifecycle library, which interface should the class implement?

(A) Lifecycle

(B) LifecycleOwner

(C) Lifecycle.Event

(D) LifecycleObserver

Correct Answer

(D) LifecycleObserver

[#119] Under which circumstances does the onCreate() method in your activity receive a Bundle with data in it (that is, the Bundle is not null)?

(A) The activity is restarted after the device is rotated.

(B) The activity is started from scratch.

(C) The activity is resumed after returning from the background.

(D) The device is rebooted.

Correct Answer

(A) The activity is restarted after the device is rotated.

[#120] How do you create a single-line comment in Kotlin?

(A) // This is a comment

(B) /* This is a comment */

(C) # This is a comment

(D) None of these

Correct Answer

(A) // This is a comment

Kotlin Program - Study Mode

[#116] Where do you define the items for a menu?

Correct Answer

[#117] Your app contains a physics simulation that requires heavy computation to display. Then the user gets a phone call. Which of the following is true?

Correct Answer

[#118] To make a class lifecycle-aware through the Android lifecycle library, which interface should the class implement?

Correct Answer

[#119] Under which circumstances does the onCreate() method in your activity receive a Bundle with data in it (that is, the Bundle is not null)?

Correct Answer

[#120] How do you create a single-line comment in Kotlin?

Correct Answer