Chapter 2: Network Model

LAYERS OF OSI MODEL

1. physical-transmit individual bits frm 1 node to next
2. data link-transmit frames 1 nodes to next
3. network-delivery of packets from original sources to final destination
4. transport-delivery of message from 1 process to another
5. session-maintains,establishes & synchronizes interaction betw. com. systems
6. presentation-syntax and semantics of information exchanged betw. 2 systems
7. application-provide services to user

TCP/IP MODEL - RELATION - ADDRESS

1. physical - underlying physical network - physical
2. data link - same
3. network - IP & other protocols - logical
4. transpot - UDP,TCP,SCTP - port
5. application - process - specific