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OSI
Layers Model
Network Layer
Moving up to the next layer in the stack we come to the
network layer. This layer actually routes packets of data,
finding a path (both physical and logical) to the receiving
or destination computer.
It provides a unique address for
each node through address resolution. One of the most common
protocols for routing information at this layer is the
Internet Protocol (IP). An example of hardware that can
operate at this layer is a router. Although routers are
often used to allow a LAN to access a WAN, layer 3 switches
can also provide routing capabilities, but often at full
wire-speed.
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