What is CORS? How does it work?
What are the layers of the OSI reference model?
There are 7 OSI layers: Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer and Application Layer.
There are four Java classes related to the use of sensors on the Android platform. List them and explain the purpose of each.
he four Java classes related to the use of sensors on the Android platform areL Sensor: Provides methods to identify which capabilities are available for a specific sensor. SensorManager: Provides methods for registering sensor event listeners and calibrating sensors. SensorEvent: Provides raw sensor data, including information regarding accuracy. SensorEventListener: Interface that defines callback methods that will receive sensor event notifications.