Correct Answer : 2007
Explanation : OHA (Open Handset Alliance) was established on 5th November 2007, led by Google. It is committed to advance open standards, provide services and deploy handsets using the Android Platform.
Correct Answer : Fragments
Explanation : In android mini-activities are also known as Fragments
Correct Answer : startActivityForResult()
Explanation : startActivityForResult() should use when need to pass data back from an activity.
Correct Answer : onCreate() callback
Explanation : Android system initiates its program with in an Activity starting with a call on onCreate() callback method..