Data Storage Quiz

Which option stores private data on the device memory?

• Shared Preferences

• External Storage

• SQLite Databases

• Internal Storage

What method is used to save a small collection of key-values using SharedPreferences APIs?

• commit()

• edit()

• getPreferences()

• getSharedPreferences()

Which method is used to write values to a Shared Preference file?

• commit()

• edit()

• getPreferences()

• getSharedPreferences()

What does the getFilesDir() method return?

• A File representing an internal directory for temporary cache files

• A File representing an internal directory for the app

• A File representing an external directory for the app

• A File representing an external directory for temporary cache files

Which method is used to verify if an external storage volume is available before accessing it?

• delete()

• openFileOutput()

• getExternalStorageState()

• deleteFile()

What is used to specify the layout of the schema in SQL databases?

• Contract classes

• SQLiteOpenHelper

• ContentValues

• ContentResolver

Which class provides a set of APIs to obtain references to a database?

• SQLiteOpenHelper

• ContentResolver

• Contract classes

• ContentValues

What method is used to add data to a database?

• update()

• insert()

• query()

• delete()

How is data read from a database using the query() method?

• By passing selection criteria and desired columns

• By calling the delete() method

• By passing a ContentValues object

• By calling the moveToFirst() method

Which method is used to delete data from a database?

• query()

• insert()

• delete()

• update()