Computer Science 1011A/B Study Guide - Phil Katz, Jargon, Scalable Vector Graphics

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Why has the internet succeeded: size, speed, reliability, security. The amount of information that a computer can store for the same price has been doubling every couple of years, since computers were invented. Ram= random access memory the block of memory that the computer can access very quickly. Nodes = computers, edges = cables, wireless transmission, satellite links. Data is sent bit by bit over edges. Arpanet in 1971 18 nodes (computers), 22 edges (land-based communication cables) Internet traffic carried over by optical fiber cables. Messages travel at the speed of light. Accidents cut some of the underwater cables linking europe and asia. Ship"s anchor cut a cable by the east african marine systems (teams) Internet traffic to kenya, rwanda, burundi, tanzania, ethiopia, and southern. 4 numbers with dots in between them. Each number between 0 and 255 inclusive. Correspondence between symbolic and numeric addresses held by special.

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