FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -VLANs segment a network and maintain isolation between segments. But what if a device on one VLAN must communicate with a device on another VLAN? The only way to enable this is via L3 routing using one of two approaches: the use of an external router or the configuration of Q-switch SVIs (switch virtual interfaces).

Detailed explanation-2: -VLAN segregation allows network traffic from different groups of users to be kept securely segregated, creating an independent environment for each group or customer. With VLAN segregation enabled, you create instances to segregate traffic to a reserved cluster of SteelHeads.

Detailed explanation-3: -By separating users, VLANs help improve security because users can access only the networks that apply to their roles. In addition, if outside attackers access one VLAN, they will be contained to that network.

Detailed explanation-4: -VLANs create smaller network segments that connect hosts virtually. Subnets use IP addresses to segment the network, connected by networking devices. Although these approaches effectively segment the network, they often require comprehensive re-architecting and can be complex to maintain.

Detailed explanation-5: -VLAN partitioning can also improve security by enabling a higher degree of control over which devices have access to each other. For example, network teams may restrict management access to network gear or IoT devices to specific VLANs.