Layers 5– 7: Session, Presentation, and Application Layers Let’s look at the upper layers of the OSI seven layer model now. Those layers are the transport, session, presentation,…

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Transport services allow users to segment and reassemble several upper-layer applications onto the same transport layer data stream. It also establishes the end-to-end connection, from your host to…

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The next two examples will bring together many of the concepts we have discussed. The network layer must relate to and interface with various lower layers. Routers must…

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Static Versus Dynamic Routes Routers must be aware of what links, or lines, on the network are up and running, which ones are overloaded, or which ones may…

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Network Layer Protocol Operations Let’s take a look at the flow of packets through a routed network. For examples sake, let’s say it is an Email message from…

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Layer 3: Network Layer Now let’s take a look a layer 3–the domain of routing. Network Layer: Path Determination Which path should traffic take through the cloud of…

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Layers 1 & 2: Physical & Data Link Layers Now let’s take a look at each of the layers in a bit more detail and with some context….

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Let’s see how these layers work in a Peer to Peer Communications Network. In this exercise we will package information and move it from Host A, across network…

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 – Application Layer If we take a look at the model from the top layer, the Application Layer, down, I think you will begin to get a better…

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Why a Layered Network Model………? That’s essentially the same thing that goes in networking with the OSI model. This image illustrates the model. So, why use a layered…

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