Deck 11: Discover Persistent Data

Question 1

One of the most effective ways to save simple application data to an Android device is by using the SharedPreferences ____.

A) emulator
B) object
C) map
D) function

Answer 1

B

Question 2

If you have a large amount of data to store as persistent data, a(n) ____ is the perfect choice.

A) database
B) list
C) array
D) frame

Answer 2

A

Question 3

The persistent data structure is available in some form in every programming language. 

Answer 3

True

Question 4

SharedPreferences are best when your app needs to save large chunks of data.

Question 5

SQL is short for ____.

A) Simple Quorum Language
B) Structured Query List
C) Structured Query Language
D) Structured Quorum List

Question 6

All applications on a device can access any files created by an app when they are saved with the internal storage method.

Question 7

Internal data stores  ____ data in key-value pairs.

A) cell phone
B) abstract
C) temporary
D) private

Question 8

All applications can read and write files placed on external storage.

Question 9

The SharedPreferences class stores private data as single values.

Question 10

The SharedPreferences class provides one of the easiest ways to save and load ____ data.

A) encrypted
B) dynamic
C) object
D) primitive

Question 11

The data stored within the SQLite database persists even after the app is ____.

A) initialized
B) instantiated
C) optimized
D) terminated

Question 12

Before an app attempts to connect to a ____ connection, it should check to see whether an Internet connection is available.

A) foreign
B) static
C) network
D) private

Question 13

When you write data using SharedPreferences, you can make changes using the SharedPreferences ____.

A) Manager
B) Editor
C) Memory
D) Status

Question 14

Persistent data stores values permanently by placing the information in a file.

Question 15

Android provides several options for you to save persistent application data.

Question 16

In a key-value pair, the key is a(n)____ that uniquely identifies the preference.

A) int
B) string
C) float
D) Boolean

Question 17

SharedPreferences can be used to save any primitive data.

Question 18

A SharedPreferences object is store user data only as long as the user has the application open.

Question 19

Android applications cannot save data in order for the data to be retrieved later.

Question 20

Android ____ can store data that can be used in different Activities of your application or by another application.

A) KeyTool
B) ListPreferences
C) ListSave
D) SharedPreferences

Question 21

Use a ____ method to store the data in a SharedPreferences object. 

A) place DataType ()
B) save DataType ()
C) put DataType ()
D) store DataType ()

Question 22

The method getString() has ____ parameters.

A) one
B) two
C) three
D) four

Question 23

The SharedPreferences object saves data to a(n) ____ file. 

A) .src
B) .res
C) .xml
D) .java

Question 24

The SharedPreferences class supports ____ data types.

A) one
B) five
C) six
D) three

Question 25

Shared Preferences stores private data in ____ pairs.

A) value-id
B) index-frame
C) key-value
D) data-target

Question 26

____ data can be stored using shared preferences, internal storage, external storage, a SQLite database, or a network connection.

A) Private
B) Overlay
C) Persistent
D) Fragment

Question 27

The persistent data ____________________ is available in some form in every programming language.

Question 28

Use a ____ method to retrieve the data in a SharedPreferences object.

A) get DataType ()
B) save DataType ()
C) retrieve DataType ()
D) store DataType ()

Question 29

For Shared Preferences methods, a default value is needed if the preference parameter is ____.

A) uncertified
B) undefined
C) unmapped
D) unbounded

Question 30

When data users enter in an Android app is stored in ____, it is lost when the app or the device stops running.

A) a cloud service
B) RAM
C) the device's driver
D) a memory card

Question 31

Data stored in ____________________ is lost when the app (or the device) stops running.

Question 32

​ The _____________________ stores structured data in a private database.

Question 33

_____________________ stores values permanently by placing the information in a file.

Question 34

________________________ stores data, which can be available to other apps on shared external storage.

Question 35

In an Android project, an ImageView control can display an image by assigning a ____ in the XML layout file.

A) source path
B) workspace
C) target grid
D) hashtag

Question 36

If a string value is undefined in a key's value, it is set to ____.

A) *
B) the number 0
C) null
D) the number 1

Question 37

Use the ____ object to save any primitive data.

A) Native
B) SetView
C) SharedBuilder
D) SharedPreferences

Question 38

The number of shared preferences you can create ____.

A) must be less than 10
B) is based on the number of apps
C) is unlimited
D) must be 25 or less

Question 39

To use ____ storage, the following permissions are necessary in the Android Manifest file: ​

A) internal
B) external
C) indexed
D) volatile

Question 40

If a numeric value is undefined in a key's value, it is set to ____.

A) numericOverlay
B) null
C) 0
D) missingContext

Question 41

To store data using the SharedPreferences editor, the code is ____________________.

Question 42

The name-value pair in a SharedPreferences object is saved to a(n)  ____________________ file that can be retrieved later in the app or after the app closes.

Question 43

Loading data saved in a SharedPreferences XML file begins by _______________ the SharedPreferences object.

Question 44

The ______________________ method retrieves string values.

Question 45

To write key-value pair assignments to an XML data file, type ____________________.

Question 46

The code to assign a key-value pair for key1 and strName is ____________________.

Question 47

The ______________________ method retrieves long values.

Question 48

A(n) _______________ stores persistent data on a Web server.

Question 49

The code to instantiate a valid SharedPreferences object is ____________________.