TCP/IP , . TCP/IP .
60- , , , 90- . , , ( ). , Internet.
, . , TCP/IP, . .
1. (link layer). . . ( ).
2. (network layer), , . . IP (Internet Protocol - Internet), ICMP (Internet Control Message Protocol - Internet) IGMP (Internet Group Management Protocol - Internet) TCP/IP.
3. (transport layer) , . TCP/IP : TCP (Transmission Control Protocol) UDP (User Datagram Protocol). TCP . , , , , -, , . , . UDP . , (datagram) . , . , . , .
4. (application layer) . TCP/IP, :
- Telnet - ;
- FTP, File Transfer Protocol - ;
- SMTP, Simple Mail Transfer Protocol - ;
- SNMP, Simple Network Management Protocol - .
1. A, B C.
2. Host Requirements RFC (robustness principle), TCP/IP. ?
3. RFC 1000, , RFC.
: 1.1, 1.2, 1.3, 2.2
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