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Early Local Area Networks The earliest Local Area Network technologies that were installed widely

The Internet: A Network of Networks What is the Internet? The Internet is the

– Enables dedicated access – Eliminates collisions and increases capacity – Supports multiple conversations

Let’s now take a look at some of the devices that move traffic around

Layers 5– 7: Session, Presentation, and Application Layers Let’s look at the upper layers

Policy Enforcement Using Access Control Lists Now we’re going to look at policy enforcement

Lessons