rec2 - 15.020 Competition in Telecoms Recitation #2 Othman...

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15.020 Competition in Telecoms Recitation #2 Othman Laraki
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Agenda • Introduction to Packet-Switched Networks
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What is an Internetwork? For this diagram, see Figure 1-1 in: Cisco Systems, Internetworking Technologies Handbook , 2002. http://www.cisco.com/univercd/ Connecting different devices, using different technologies to each other and having them work together and function as a single large network.
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Wide Area Networks (WANs) • A geographically dispersed telecommunications network, more broad than a LAN • May be privately owned or rented, but usually connotes the inclusion of public networks. • WAN technologies function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the network layer.
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Metropolitan Area Networks (MANs) A network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network ( LAN ) but smaller than the area covered by a wide area network ( WAN ). Usually an interconnection of networks in a city into a single larger network (which may then also offer efficient connection to a wide area network) also the interconnection of several LANs by bridging them with backbone lines (sometimes referred to as a campus network) .
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Local Area Networks (LANs) Interconnect individual users so that they can exchange
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This note was uploaded on 01/17/2012 for the course MGMT 15.020 / 1 taught by Professor Prof.jerryhausman during the Fall '03 term at MIT.

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rec2 - 15.020 Competition in Telecoms Recitation #2 Othman...

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