CPS 706 Study Guide - Midterm Guide: Error Detection And Correction, Checksum, Packet Loss
11 Dec 2016
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Document Summary
Understand: multiplexing, demultiplexing, reliable data transfer, flow control, congestion control. Learn: udp - connectionless transport, tcp - connection-oriented reliable transport, tcp congestion control. Transport provides logical communication between app and hosts. Send side: break messages into segments (network-layer packets) and passes to network layer. Receive side: reassembles packets into messages and passes to application layer. Relies on and enhances network layer services. 12 kids in bob"s house sending letters to 12 kids in jane"s house. Transport protocol = bob and jane who demultiplexes to in house siblings. Internet"s network-layer protocol is called ip (internet protocol) Ip use best-effort delivery service so makes no guarantees (same with the ordering) Provides two services: process-to-process delivery and error checking. Reliable data transfer (flower control, sequence numbers, acknowledgments, and timers) Congestion control (prevents one tcp connection from swamping links and routers, traversing congested link equal share of bandwidth, regulating rate of sending) Converts ip"s unreliability to reliable data transport.
