Repeater:also called a regenerator, it is an electronic device that operates only at physical layer. It receives the signal in the network before it becomes weak, regenerates the original bit pattern and puts the refreshed copy back in to the link.Bridges: these operate both in the physical and data...
Telnet is also called as terminal emulation. It belongs to application layer.
The process that allows a network to self-repair networks problems. The stations on the network notify the other stations on the ring when they are not receiving the transmissions. Beaconing is used in token ring and fddi networks.
1. In a session 2. In a lan3. In a wan 4. Across lan and wan