ITM 301 Lecture Notes - Virtual Private Network, Data Link Layer, Network Layer
16 Oct 2011
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Home applications: p2p: a loose group of people can communicate with others in the group, no fixed division of clients and servers, email,facebook p2p is the 19th centuries telephone. Internet makes this possible: laptops and handhelds for example, wifi hotspots, gps systems. Social issues: network neutrality: copyrights from p2p infringing, digital millennium copyright act: for breaking copyright laws, using cookies to track people down, profiling users, phising: fake emails to steal information. Personal area networks: lets devices communicate over a range of a person, bluetooth is a good example of this or a wireless mouse. 802. 3 is ethernet common type of wired lan. Metropolitan area network: covers a city, such as cable tv networks, antenna goes to head end which is internet which goes to junction boxes to go to. These lines pick the outgoing line when data comes: switchs can also be called routers, many wans will be internetworks.
