Android Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Android. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Can a user save all database updates in onStop ()?

A - Yes, a user can save all database updates in onStop()

B - No, a user can save in onSavedInstance()

C - No, a user can save in a Bundle()

D - No, In some situations, a user can't reach onStop()

Answer : D

Explanation

Due to low memory problem. your application will close before reaching onStop()

Q 2 -How to move services to foreground in android?

A - Services always work in Foreground only

B - No,We can't do this query

C - Using startService(Intent intent)

D - startFordgroud(int id, Notification notification).

Answer : D

Explanation

We have to call startFordgroud(int id,Notification notification) to make services as foreground services. When it comes to foreground, it will show a notification.

Q 3 -What are the functionalities of Binder services in android?

A - Binder is responsible to manage the thread while using aidl in android

B - Binder is responsible for marshalling and un-marshalling of the data

C - A & B

D - Binder is a kind of interface

E - None of the above

Answer : C

Explanation

Binder is responsible to manage the thread while creating aidl and is responsible to do marshalling and un-marshalling of the data. Binders have sub functionalities and interface for clients

Q 4 - How many broadcast receivers are available in android?

A - sendIntent()

B - onRecieve()

C - implicitBroadcast()

D - sendBroadcast(),sendOrderBroadcast(),and sendStickyBroadcast().

Answer : D

Explanation

sendBroadcast() &miuns; It's normal broadcast.

sendOrderBroadcast() &miuns; It has an order priority

sendStickyBroadcast() &miuns; Intent passed with broadcast for future users.

Q 5 - What is an anonymous class in android?

A - Interface class

B - A class that does not have a name but have functionalities in it

C - Java class

D - Manifest file

Answer : B

Explanation

Anonymous class doesn't have class name but has some functionalities in it.

Q 6 - WHich method is used to find GPS enabled or disabled pro-grammatically in android?

A - finish()

B - getGPSStatus()

C - onProviderDisable()

D - getGPS().

Answer : C

The onProviderDisable() method is used to find whether GPS is enabled or disabled in android pro-grammatically

Q 7 - What is the package name of JSON?

Answer : D

org.json is the package name of JSON object and JSON array

Q 8 - What is sandbox in android?

A - Each application runs securely in sandbox without interrupting another process

B - Android Box

C - Android development tool kit

D - None of the above

Answer : A

Each application runs securely in sandbox without interrupting another process. If an application is running in a sandbox, outside application can't touch sandbox application

Q 9 - What is the purpose of super.onCreate() in android?

A - To create an activity

B - To create a graphical window for subclass

C - It allows the developers to write the program

D - None of the above

Answer : B

The super.onCreate() will create the graphical window for subclasses and place at onCreate() method.

Q 10 - What is an interface in android?

A - Interface acts as a bridge between class and the outside world.

B - Interface is a class.

C - Interface is a layout file.

D - None of the above

Answer : A

The Interface acts as a bridge between class and the outside world. Interface contains method declaration, nested types, and constants.

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