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Android Security Essentials Question and Answers

Android Security Essentials

Last Update May 17, 2024
Total Questions : 107

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Questions 1

Which of the following is correct about saving files in cache?

Options:

A.  

Cache file can only be created in internal memory

B.  

By using getCacheDir()method

C.  

By using getExternalStorageDirectory()method

D.  

Both options "By using getCacheDir()method" and "By using getExternalStorageDirectory()method" are correct.

Discussion 0
Questions 2

The auth token is acquired in the form of

Options:

A.  

Integer

B.  

Hexadecimal value

C.  

String

D.  

Bundle

Discussion 0
Questions 3

What is the visibility or accessibility level of the preference file created by application?

Options:

A.  

By default it is private to the application that created it.

B.  

By default it is available for all applications on the same device.

C.  

It can be shared with other applications on same device

D.  

Both "By default it is private to the application that created it" and "It can be shared with other applicationson same device" are correct.

Discussion 0
Questions 4

Which of the following methods can be used to extract licence information from rights object?

Options:

A.  

getDrmRightsObject()

B.  

getConstraints()

C.  

getApplicationContext()

D.  

saveRights()

Discussion 0
Questions 5

Which Protocol is used to ensure data integrity in Android?

Options:

A.  

Real-time Transport Protocol (RTP)

B.  

Secure Socket Layer (SSL)

C.  

Transfer Control Protocol (TCP)

D.  

Internet Protocol (IP)

Discussion 0
Questions 6

Which of the following is NOT true about setting the “permission” attribute to tags?

Options:

A.  

Only one permission can be added to any tag

B.  

If permission is required by all components of the application then it should be specified in application tag.

C.  

The permission in the component overrides the permission in the application tag.

D.  

The permission can only be included in application or manifest tags.

Discussion 0
Questions 7

Which of the following is true about “uiOptions” attribute of the ? (Choose two)

Options:

A.  

Its default value is “none”.

B.  

“splitActionBarWhenNarrow” is a valid value for this attribute.

C.  

“hideActionBarWhenNarrow” is a valid value for this attribute.

D.  

It disables any other UI options in the layout resource files.

Discussion 0
Questions 8

Broadcast Intents is a mechanism which allows messages to be sent to

Options:

A.  

Various Activity

B.  

Various services

C.  

Various Intents

D.  

Various Applications

Discussion 0
Questions 9

How many level of protection are there in Permission?

Options:

A.  

Seven.

B.  

User Defined.

C.  

Four.

D.  

Depends of the Android OS version.

Discussion 0
Questions 10

Which of the following permissions is most dangerous and can cause severe damage to Device?

Options:

A.  

BRICK

B.  

REBOOT

C.  

SHUTDOWN

D.  

ACCESS_WIFI_STATE

Discussion 0
Questions 11

Which XML tag is used to make use of protected features of the device?

Options:

A.  

B.  

C.  

D.  

Discussion 0
Questions 12

Which of the following is true about the “description” attribute in the application tag?

Options:

A.  

The value must be set as a reference to the string resource.

B.  

It can be a raw string.

C.  

The default value is same as the application name if not value is assigned to it.

D.  

Its length must be equal to that of application label.

Discussion 0
Questions 13

Which of the following are helper classes provided by Android to backup data to Google server? (Choose two)

Options:

A.  

FileBackupHelper

B.  

DatabaseBackupHelper

C.  

SharedPreferencesBackupHelper

D.  

MapBackupHelper

Discussion 0
Questions 14

Which of the following throws exception GooglePlayServicesAvailabilityException? (Choose two)

Options:

A.  

GooglePlayServices.apk is old

B.  

GooglePlayServices.apk is unavailable.

C.  

Android OS is not updated to the latest version.

D.  

Android device cannot communicate with Google Play services.

Discussion 0
Questions 15

Which of the following is NOT true about the versionCode attribute? (Choose two)

Options:

A.  

This is same as the version number of the application shown to the user

B.  

This must be an integer.

C.  

This must be a floating number

D.  

It must be incremented from the previous versionCode when releasing a new version of application.

Discussion 0
Questions 16

Which of the following is NOT correct about setting “largeHeap” attribute of tag to true?

Options:

A.  

It allows us to increase the heap memory by fixed amount given as its value.

B.  

Its value is given in Mbps.

C.  

Its value affects the overall performance of the application.

D.  

If shared user ID is being used to allow multiple applications to use a process, they all must use this optionconsistently or they will have unpredictable results.

Discussion 0
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