Question 1

Which of the following correctly completes the statement b elow to instantiate a Shared Preferences object?
SharedPreferences sharedPref =

Accepted Answer

A)   PreferenceManager.getDefaultSharedPreferences(this) ;
B)   SharedPreferences.getDefault PreferenceManager (this) ;
C)   PreferenceManager. SharedPreferences .getDefault(this) ;
D)   SharedPreferences . PreferenceManager .getDefault(this) ;E) A) and B)
F) All of the above

Question 2

If a string value is undefined in a key's value, what is it set to ?

Accepted Answer

A)   *
B)   the number 0
C)   null
D)   " "E) A) and B)
F) B) and C)

Question 3

In an Android project, an ImageView control can display an image by assigning what in the XML layout file ?

Accepted Answer

A)   source path
B)   workspace
C)   target grid
D)   hashtagE) B) and C)
F) A) and D)

Question 4

SharedPreferences can be used to save only int and string primitive data.

Accepted Answer

A) True 
 B)False

Question 5

An undefined string value is set to a(n) ____________ value, which is represented by empty quotes.

Accepted Answer

null

Question 6

Which method is used to store integer data in a SharedPreferences object ?

Accepted Answer

A)   place Int () 
B)   saveInteger() 
C)   putInt() 
D)   storeInteger() E) A) and B)
F) All of the above

Question 7

If data is lost when an app or the device stops running w here was the data st ored?

Accepted Answer

A)   a cloud service
B)   RAM
C)   the device's driver
D)   a memory cardE) B) and D)
F) A) and B)

Question 8

With Android, yo u have th e option of storing persist e nt data only on the device's internal storage.

Accepted Answer

A) True 
 B)False

Question 9

How does the Shared preferences option of storing persistent data store private data?

Accepted Answer

A)   private database
B)   shared external storage
C)   public cloud
D)   key-value pairsE) A) and B)
F) A) and C)

Question 10

What is one of the most effective ways to save simple application data to an Android device?

Accepted Answer

A)   internal storgage
B)   SharedPreferences object
C)   external storage
D)   SQLite databaseE) A) and D)
F) B) and D)

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

T he Shared Preferences class provides one of the easiest ways to sav e and load data. Which specific data type does this refer to ?

Accepted Answer

A)   encrypted data
B)   persistent data
C)   application data
D)   primitive dataE) A) and B)
F) A) and C)

Question 13

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

Accepted Answer

The answer of A(n) _______________ stores persistent data on a...

Question 14

Before an app attempts to connect to a netwo rk connection, what action should be taken?

Accepted Answer

A)   The app should scan the quality of the network.
B)   The app should open a network's web browser.
C)   The app should see if an Internet connection is available.
D)   No action needs to be taken.E) All of the above
F) B) and C)

Question 15

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.

Accepted Answer

The answer of The name-value pair in a SharedPreferences object...

Question 16

The following permissions are necessary in the Android Manifest file to use which type of storage?

Accepted Answer

A)   internal
B)   external
C)   indexed
D)   volatileE) B) and D)
F) A) and D)

Question 17

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

Accepted Answer

The answer of The persistent ____________________ structu re is available...

Question 18

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

Accepted Answer

The answer of _____________________ stores values permanently by placing the...

Question 19

The code to create a n instance of a SharedPreferences editor object named edit is ______________________________.

Accepted Answer

SharedPreferences.Editor edit = SharedPref.edit();

Question 20

Which statement dynamically assigns an image named car in the drawable folder to an ImageView control?

Accepted Answer

A)   car.setImageResource(R.drawable.image) ;
B)   image.setImageResource(car.R.drawable) ;
C)   image.setImageResource(R.drawable.car) ;
D)   SetImageResource .image( R. drawable.car) ;E) B) and C)
F) All of the above C

Exam 11: Discover Persistent Data

Which of the following correctly completes the statement b elow to instantiate a Shared Preferences object? SharedPreferences sharedPref =

Correct AnswerverifiedShow Answer

If a string value is undefined in a key's value, what is it set to ?

Correct AnswerverifiedShow Answer

In an Android project, an ImageView control can display an image by assigning what in the XML layout file ?

Correct AnswerverifiedShow Answer

SharedPreferences can be used to save only int and string primitive data.

Correct AnswerverifiedShow Answer

An undefined string value is set to a(n) ____________ value, which is represented by empty quotes.

Correct Answerverifiednull

Which method is used to store integer data in a SharedPreferences object ?

Correct AnswerverifiedShow Answer

If data is lost when an app or the device stops running w here was the data st ored?

Correct AnswerverifiedShow Answer

With Android, yo u have th e option of storing persist e nt data only on the device's internal storage.

Correct AnswerverifiedShow Answer

How does the Shared preferences option of storing persistent data store private data?

Correct AnswerverifiedShow Answer

What is one of the most effective ways to save simple application data to an Android device?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

T he Shared Preferences class provides one of the easiest ways to sav e and load data. Which specific data type does this refer to ?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Before an app attempts to connect to a netwo rk connection, what action should be taken?

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

The following permissions are necessary in the Android Manifest file to use which type of storage?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The code to create a n instance of a SharedPreferences editor object named edit is ______________________________.

Correct AnswerverifiedSharedPreferences.Editor edit = SharedPref.edit();

Which statement dynamically assigns an image named car in the drawable folder to an ImageView control?

Correct AnswerverifiedC

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null

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SharedPreferences.Editor edit = SharedPref.edit();

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C