PRM 392 Final Exam | Answered with complete solutions
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PRM 392
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PRM 392
PRM 392 Final Exam | Answered with complete solutions What Activity lifecycle methods are called when a device-configuration change (such as rotation) occurs? Choose one: A. Android immediately shuts down your Activity by calling onStop(). Your code must restart the Activity. B. Android shuts do...
What Activity lifecycle methods are called when a device-configuration change (such as
rotation) occurs? Choose one:
A. Android immediately shuts down your Activity by calling onStop(). Your code must
restart the Activity.
B. Android shuts down your Activity by calling onPause(), onStop(), and onDestroy().
Your code must restart the Activity.
C. Android shuts down your Activity by calling onPause(), onStop(), and onDestroy(),
and then starts it over again, calling onCreate(), onStart(), and onResume().
D. Android immediately calls onResume().
What are components in Room?
A. Entity
B. DatabaseHelper
C. Repository
D. DAO
Which component is used to open an Activity when user taps a notification?
A. Action button
B. PendingIntent that's sent when the user taps the action button
C. Title that describes the action
D. Icon that represents the action
How to store heavy structured data in android?
A. Not possible
B. SQlite database
C. Cursor
D. Shared Preferences
Which of the following are true statements about implicit and explicit intent? (3 answers)
A. Android delivers an explicit intent to a target component without consulting filters in
the AndroidManifest.xml file
B. Implicit intents are typically used to interact with components residing in other apps
C. Explicit intents are typically used to interact with components residing in other apps
D. Android delivers an implicit intent to a target component only if it matches one of its
intent filters in the AndroidManifest.xml file
,How do you send data from an activity to a fragment?
A. Set a Bundle and use the Fragment.setArguments(Bundle) method tosupply the
construction arguments for the fragment.
B. Use the Fragment method getArguments() to get the arguments.
C. Define an interface in the Fragment class, and implement the interface in the activity.
D. Call addToBackStack() during a transaction that removes the fragment.
Which of the following should be used to save the unsaved data and release resources
being used by Android application?
A. Activity onStop()
B. Activity onDestroy()
C. Activity onPause()
D. Activity on Shutdown()
Android Architecture Components provide some convenience annotations for DAOS.
Which of the following are available? (Choose 4 answers)
A. @Query
B. @Insert
C. @Delete
D. @Update
E. @Select
Suppose you want to create an app that has a white background, dark text, and a dark
action bar. Which base style does your application style inherit from?
A. Theme.AppCompat.Light
B. Theme.AppCompat Dark.NoActionBar
C. Theme.AppCompat.Light.DarkActionBar
D. Theme.AppCompat.NoActionBar
What are the advantages of using a Room database? (Choose 3 answers)
A. Creates and manages an Android SQLite database for you.
B. Eliminates a lot of boilerplate code.
C. Helps you manage multiple applications.
D. Using a DAO, provides a mechanism for mapping Java methods to database queries
When in the Activity lifecycle is onSavelnstanceState() called?
A. onSavelnstanceState() is called before the onStop() method.
B. onSavelnstanceState() is called before the onResume() method.
C. onSavelnstanceState() is called before the onCreate() method.
D. onSavelnstanceState() is called before the onDestroy() method
, Which of the following correctly describe what Android's IntentService does? (2
answers)
A. It's a framework that handles asynchronous requests on demand
B. It expresses requests as intent & passes them between threads and/or process
C. It is a component that provides a screen within which users can interact in order to
do something
D. It is an event handler that reponds to system-side broadcast announcement
If an AsyncTask is defined as follows
private class DownloadFiles Task extends AsyncTask<URL, Integer, Long>
What is the type of the value that is passed to doInBackground() in the AsyncTask?
A. URL
B. Integer
C. Void
D. Long
Which of the following are methods in the activity and fragment lifecycles? (Choose 3
answers)
A. onCreate()
B. onDraw()
C. onClick()
D. onStart()
E. onPause()
Which of the following are reasons why the SQLite query() method returns a Cursor?
A. It allows buffering of query results It is efficient since all data needn't be loaded into
memory
B. It is efficent since data needn't be loaded into memory
C. It ensures that query results are right
D. It alleviates the need to explicitly call close() on the Cursor
Which component do we use to open an URL in Android application?
A. Implicit Intent
B. Explicit Intent
C. Content Provider
D. Service
Which of the following are types of Android intent broadcast mechanisms? (Choose 2
answers)
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