What are some of the different reasons to use VLANs?
What will be an ideal response?
ANSWER: Reasons for using VLANs include:
* You wish to isolate connections with heavy or unpredictable traffic patterns, such as when separating heavy VoIP traffic from other network activities.
* You want to identify groups of devices whose data should be given priority handling, such as executive client devices or an ICS (industrial control system) that manages a refrigeration system or a gas pipeline.
* You want to contain groups of devices that rely on legacy protocols incompatible with the majority of the network's traffic, such as a legacy SCADA (supervisory control and data acquisition) system monitoring an oil refinery.
* You wish to separate groups of users who need special or limited security or network functions, such as when setting up a guest network.
* You are configuring temporary networks, such as when making specific network resources available to a short-term project team.
* You intend to reduce the cost of networking equipment, such as when upgrading a network design to include additional departments or new types of network traffic.
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