Checkpoint-Osi Model

OSI Model Yvette Flores IT 242 April 8, 2011 Lawrence Master OSI Model An Open Systems Interconnection (OSI) prolongation influence is the worlds major mesh topologying architecture get into (Regan, 2004). According to Regan, The OSI reference model adopts a layered uprise where a communication subsystem is mortified down into seven layers, from each one one of which performs a thoroughly defined function (2004). So it serves as a model in which then existing services and protocol arsehole be drafted. The layers are as followed: application, presentation, session, transport, network, entropy tie, and physical. The layers that WAN (Wide cranial orbit Networks) protocols operate in the OSI Model would be network, entropy link and physical. Being that network is defined in the OSI model as being answerable for addressing and routing between sub-networks (Local Area Networks being that), in like demeanor data link is responsible for the transfer of data every where the channel and finally the physical layer which handles physical signaling, including connectors, timing, voltages, and former(a) matters all this make up protocols for WAN.

Some WAN protocols patch up frame relay, High-Level Data Link Control (HDLC), and stratum to point protocol. The layer of the OSI reference model that switches and routers operate in is the network layer; these are hardware devices that assist in addressing and routing between sub-networks which is the definition of the network layer of the OSI reference model. A brouter (short for a bridge router) would fall under two layers, data link and net work because it can distinguish non-routable! protocols and forward them to the conquer network therefore touching on being a data link. Reference Regan, P. (2004). Wide Area Networks (1st ed.). Upper turn on River, NJ: Prentice Hall.If you want to get a respectable essay, clubhouse it on our website: OrderCustomPaper.com

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