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 a wireless network, the data link layer manages the communication between devices over the radio frequency medium. It is responsible for framing data packets, addressing, and error detection and correction. This layer utilizes protocols like IEEE 802.11 (Wi-Fi) to handle medium access control (MAC), which ensures that multiple devices can share the same frequency without data collisions. Additionally, the data link layer establishes a reliable link by managing signal quality and retransmissions when necessary.
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.
Physical layer = Hub, NIC, Repeater. Data Link Layer = Switch, Bridge. Network Layer = Router.
Data link layer
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
The data link layer is responsible for ensuring the trustworthy transmission of data across a physical link. It handles physical addressing, line discipline, network topology, error notification, and ordered delivery of frames. By managing these functions, the data link layer ensures that data packets are reliably transmitted between directly connected devices.