bridges, Switches and NIC..
The layer 2 devices use the data link layer addresses.
exchanging of data between interconnected devices
Layer 2 (Data Link Layer) http://compnetworking.about.com/cs/internetworking/g/bldef_bridge.htm
In this situation Network Layer may not be required. Data Link Layer can handle communication process. If two devices are communicating from different networks then Network Layer a is must. In this situation Data Link Layer is not enough for completing the communication process as it lacks Routing ability which is the primary function of Network Layer.
Data link layer
Physical layer = Hub, NIC, Repeater. Data Link Layer = Switch, Bridge. Network Layer = Router.
The data link layer (layer 2) and the physical layer (layer 1) use the constructed frame.
Data Link Layer
Data Link Layer
Data link layer
How many bits are there in a data link layer ethernet address?
Layer 2, the data-link layer.