OSI Reference Model
This lesson covers the OSI reference model. It is sometimes also called ISO or 7 layer reference model. The model was developed by the International Standards Organization in the early 1980’s. It describes the principles for interconnection of computer systems in an Open System Interconnection environment.
Session, Presentation, and Application Layers
Layers 5– 7: Session, Presentation, and Application Layers Let’s look at the upper layers of the OSI seven layer model… Read More
Transport Layer
Transport services allow users to segment and reassemble several upper-layer applications onto the same transport layer data stream. It also… Read More
LAN-to-LAN Routing
The next two examples will bring together many of the concepts we have discussed. The network layer must relate to… Read More
Static and Dynamic Routes
Static Versus Dynamic Routes Routers must be aware of what links, or lines, on the network are up and running,… Read More
Operations of Network Layer Protocol
Network Layer Protocol Operations Let’s take a look at the flow of packets through a routed network. For examples sake,… Read More
Network Layer
Layer 3: Network Layer Now let’s take a look a layer 3--the domain of routing. Network Layer: Path Determination Which… Read More
Physical & Data Link Layers
Layers 1 & 2: Physical & Data Link Layers Now let’s take a look at each of the layers in… Read More
Peer-to-Peer Communications
Let’s see how these layers work in a Peer to Peer Communications Network. In this exercise we will package information… Read More
Layer Functions
- Application Layer If we take a look at the model from the top layer, the Application Layer, down, I… Read More
Need of Layered Network Model
Why a Layered Network Model.........? That’s essentially the same thing that goes in networking with the OSI model. This image… Read More