CSMA/CD (Carrier Sense Multiple Access with Collision Detection ) (802.3) . CSMA/CD (, ) . Ethernet, (Fast Ethernet, Gigabit Ethernet).
, CSMA/CD. CSMA/CD OSI.
. CSMA/CD Carrier Sense Multiple Access (CSMA).
, , , jam signal ( backoff delay truncated binary exponential backoff), .
CSMA .
, , Ethernet, . , ( ) . jam signal, , .
Ethernet CSMA/CD.
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12. Ethernet ( )
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13. Ethernet :
Ethernet :
8 , 10101010, 10101011. IEEE 802.3 (SFD Start of Frame Delimiter) .
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(FCS Frame Check Sequence) 32- (CRC) .
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1518 (12144 , 1214,4 Ethernet, 121,44 Fast Ethernet). ' .
Ethernet, 10 /, , :
10BASE5 ( );
10BASE2 ( );
10BASE-T ( );
10BASE-FL ( ).
: "10" 10 /, BASE ( ), : "5" 500 , "2" 200 (, 185 ) ': "" ( "twisted-pair"), "F" ( "fiber optic").
