- Carrier Sense Multiple Access (CSMA)
- Function: Used in Ethernet networks, where workstations send out packets and listen for acknowledgments. If no acknowledgment is received, the packet is resent.
- Application: Ensures that data packets are transmitted effectively, reducing the likelihood of data collisions on the network.
- CSMA with Collision Avoidance
- Function: Workstations are connected via two coaxial cables, transmitting data in one direction only to avoid collisions. Commonly used in Wireless 802.11 networks.
- Application: Helps to prevent data collisions by avoiding simultaneous transmissions.
- CSMA with Collision Detection
- Function: Only one host can send data at a time, with jamming signals used to prevent others from transmitting simultaneously.
- Application: Widely used in traditional Ethernet networks to manage traffic and prevent data collisions.
- Polling
- Function: A host can only transmit data when it polls a secondary device to check if it is free to receive data.
- Application: Ensures that only one device transmits at a time, reducing the chance of data collisions.
- Token-passing
- Function: Used in token ring networks, where hosts can only transmit when they receive a clear-to-send token.
- Application: Provides an orderly way of transmitting data, ensuring that only one device transmits at any given time.
These protocols define how data is transmitted across a LAN, ensuring effective communication while minimizing collisions and ensuring data integrity.