switches inbridges as network infrastructure devices arenetworking

[margaret cortez]

switches inbridges as network infrastructure devices arenetworking devices we say that a switch in a bridge is an example are a datalink layer device and why is that because switchesand bridges were designed to look at mac Address iswhen Ethernet frame comes in they will look at a map address anddecide where the spray me to go let me go back up for a second we'retalking about the networking layer notice our router a router is typicallyconsidered a networking layer device why is that well when it when a plan comes in yes a router has to look at the mac addressbut it goes further than that in also look at the IP address in thatdata and based on both the mac address andthe IP address the router can determine where this dataneeds to go so we say there are a router is thatnetwork layer device I'm and then lastly when I can spend a lotof time with this here's our last layer though what time i layer 1 the physical layer I'm the physicallayers responsible for determining things like the electrical signalscarried .

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