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Android Operating System History Quiz

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Questions and Answers

What is the primary aim of the Android version 4.1 Jelly Bean update?

Increasing battery life

Enhancing security features

Expanding app compatibility

Improving user interface functionality and performance (correct)

Which organization led the Open Handset Alliance in developing Android?

Google (correct)

Microsoft

Samsung

Apple

Which directory in the anatomy of an Android application contains XML files with resources like strings and color definitions?

AndroidManifest.xml

res/layout

res/values (correct)

res/drawable-hdpi

When was the commercial version of Android first released?

2008 (B) Signup and view all the answers

What type of screens are the drawable objects in the 'res/drawable-hdpi' directory designed for?

High-density screens (C) Signup and view all the answers

Which company announced the Android version 4.1 Jelly Bean in 2012?

Google (C) Signup and view all the answers

What is the purpose of the manifest.xml file in an Android application project?

To specify the application's components to the Android OS (B) Signup and view all the answers

What does the 'onCreate()' method in Android development signify?

It is triggered when an activity is loaded (D) Signup and view all the answers

Where should the application icon be stored in an Android project?

res/drawable-hdpi folder (B) Signup and view all the answers

What role does R.layout.activity_main play in Android development?

It refers to the activity_main.xml layout file (A) Signup and view all the answers

What attribute determines the class name of an Activity subclass in Android's tag?

android:name (D) Signup and view all the answers

Why is it important to declare all components of an Android app in the manifest.xml file?

To ensure that all components are recognized by the Android OS (C) Signup and view all the answers

What is the purpose of using android.intent.action.MAIN in the manifest file?

To define the activity as the entry point for the application (D) Signup and view all the answers

Why is android.intent.category.LAUNCHER used in the intent-filter?

To indicate that the application can be launched from the device's launcher icon (B) Signup and view all the answers

What does @string/app_name refer to in the text?

A string defined in the strings.xml file named app_name (A) Signup and view all the answers

In which directory is the strings.xml file typically located?

res/values (A) Signup and view all the answers

What is the purpose of activity_main.xml in Android development?

To define layouts for application components (A) Signup and view all the answers

Which Android control mentioned in the text is used to build the GUI?

TextView (C) Signup and view all the answers