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The OSI reference model is a framework
that is used to understand how information travels throughout a network.
The OSI reference model explains how packets travel through the various
layers to another device on a network, even if the sender and
destination have different types of network media.
In the OSI reference model, there are
seven numbered layers, each of which illustrates a particular network
function. 
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Dividing the network into seven layers provides the following
advantages:
- It breaks network communication into
smaller, more manageable parts.
- It standardizes network components to
allow multiple vendor development and support.
- It allows different types of network
hardware and software to communicate with each other.
- It prevents changes in one layer from
affecting other layers.
- It divides network communication into
smaller parts to make learning it easier to understand.
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Interactive Media Activity
Drag and Drop: The Seven Layers of the OSI Model
After completing this activity, the student will be able to
identify some of the functions of the seven OSI layers.
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Web Links