OSI
OSI, OSI 7- (. 1) (International Standardization Organization - ISO). 2 :
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1 OSI
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, . . IEEE 802.x : (LLC) (MAC). LLC , MAC .
2 :
HDLC , IEEE 802.2 LLC ( I II) MAC 802.x, Ethernet, Token ring, FDDI, X.25, Frame relay
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ñ IP, IPX, X.25 ( 2), CLNP -
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ñ TCP - , NCP - Netware Core Protocol, SPX - , TP4 - 4
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ñ FTP - , SMTP - ,NFS -
ñ FTAM -
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NRZI, AMI, . , . . : .
, . , . 4B/5B. 4B/5B FDDI Fast Ethernet. 4 5 . , . 4B/5B 32 , 16, 16 , 0, . , . , .
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4B/5B . , . 4B/5B , 3 .
B binary , , 8B/6T. 8 6 , 3 . 8B/6T 4B/5B, 256 36, 729 .
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