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Network+ Training Guide by Mike Harwood, Drew Bird

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VLANs

  • Identify the main characteristics of VLANs.

The word virtual is used a lot in the computing world—perhaps too often. In the case of VLANs, the word virtual does little to help explain the technology. Perhaps a more descriptive name for the VLAN concept might have been “segmented LAN.”

EXAM TIP

802.1q 802.1q is the Institute of Electrical and Electronics Engineers (IEEE) specification developed to ensure interoperability of VLAN technologies from the various vendors.

VLANs involve network segmentation, a strategy that significantly increases the performance capability of the network and removes potential performance bottlenecks. A VLAN is a group of computers that are connected together and act as if they are on their own network segments, ...

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