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Chart 1 shows a network switch with no VLAN. Any broadcast frames will be transmitted
to all other ports. For example, and frames broadcast from Port 1 will be sent to Ports 2, 3,
and 4.
Chart 2 shows an example with two VLANs indicated by red and blue. In this example,
frames broadcast from Port 1 will only go to Port 2 since Ports 3 and 4 are in a different
VLAN. VLANs can be used to divide a network by restricting the transmission of
broadcast frames.
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