Correct Answer is: 802.5
What is Collision Free Protocol ?
Collision-free protocols are designed to prevent collisions from occurring. Collisions can occur when more than one device attempts to send a packet on a network segment at the same time.
IEEE 802.5 provides a collision-free protocol. The token ring is standardized with protocol IEEE 802.5. Token passing is the method of medium access, with only one token allowed to exist on the network at a time.
Collision-free MAC protocols can be devided into three categories:
- Code Division Multiple Access (CDMA)
- Frequency Division Multiple Access (FDMA)
- Time Division Multiple Access (TDMA)