(Media Access Method) OSI.
, . , . , , . (Probabilistic), .
. . , . . (Deterministic), .
, , . ( ), .
:
1. CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) . , , . (RTS) (CTS) . ( ) , . (RTS 255) CTS . , . Apple LocalTalk, ;
2. CSMA/CD (Carrier Sense Multiple Access/Collision Detect) . , , . , . ( ) . , , CSMA/CD. . , . , CSMA/CA, . : Ethernet, Ether-Talk ( Ethernet Apple), G-Net, IBM PC Network, AT&T StarLAN. , .
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CSMA/CD
CSMA/CD , . CSMA/CD . CSMA/CD Ethernet, .
CSMA/CA
CSMA/CA , (time slicing) . CSMA/CA LocalTalk Apple Computer.
(.. ) .
.
:
1. (Token Passing), ARCnet, Token Ring, FDDI;
2. (Polling) , (Mainframes). , .
. (). . , , .
(token passing) () . , , . .
, . , , . .
, . , IEEE 802.4 Token Bus 802.5 Token-Ring.
Token Bus , Token-Ring .
( - ) FDDI (Fiber-distributed data interface).
, - , .
. , . .
, ( ), . . , , .
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(Polling) , ( , -) . ( ) , , .
, , -. , . , .
, , , .