NATS 1700 Chapter Notes -Social Bookmarking, Simple Mail Transfer Protocol, Hostname
14 May 2013
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[301] -- the internet as a communication system: the internet is a system, a delivery service for bits, whatever the bits represent and however they get from one place to another. Packet switching: an internet router, as the machines connecting the internet together are known, computers dont know what theyre sendingeverything is known as bits. [302: size limits of bites, nature of the network --- circuit-switched network (which lead to , pocket switched networkunit of information traveling over the internet is a packet of about. 1500 bytes or less (any communications longer than that are broken up into multiple packets, with serial numbers so that the packets can be reassembled upon arrival to put the original message back together) Internet, passing messages until they reach their destination: fundamentally, the internet consists of computers sending bit packets that request services, and other computers sending packets back in response.
