, , ISO/OSI. , .
, , . . , , , , . , LLC MAC. , . , MAC, , , , . , , LLC, .
Ethernet Token Ring. , , .
Ethernet - IEEE 802.3. , CSMA, CSMA/CD CSMA/CA.
CSMA - CSMA (Carrier Sense Multiple Access) . . , , . CSMA , , ( ), , , , , .
CSMA/CD - CSMA/CD (Carrier Sense Multiple Access with Collision Detection), , CSMA. Ethernet, Fast Ethernet Gigabit Ethernet, IEEE 802.3. CSMA/CD, , , , - . , , , jam (32- ), , . ( ), , , , LLC.
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CSMA/CA - CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance), , CSMA. , IEEE 802.11. CSMA/CD, jam- , CSMA/CA jam-, , , . jam-, jam-. , - , , . , , . , jam-, , jam-.
Token Ring - Token Ring FDDI. (Token) , , . , , .