CompTIA Network+ Practice Test

Which command provides information about VLANs associated with switch interfaces?

1. show power

2. show vlan

3. view status

4. show routing

The correct answer is: show vlan

The command that provides information about VLANs associated with switch interfaces is "show vlan." This command is specifically designed to display details regarding VLAN configurations on a network switch. When executed, it typically lists the VLAN IDs, names, and the associated ports, allowing network administrators to identify which interfaces are part of which VLANs. Using this command is crucial for managing network segmentation, troubleshooting connectivity issues, and ensuring that the correct devices are grouped within the appropriate VLAN for security and performance purposes. It enhances visibility into the switch's VLAN setup, which is fundamental for effective network management. Other commands listed do not directly provide VLAN information. For instance, "show power" is likely related to power management within the switch, while "view status" is too generic and does not specifically address VLANs. "Show routing" pertains instead to route information and does not keep track of VLAN associations or configurations. Thus, "show vlan" is the most accurate and relevant choice for gaining insight into VLANs on switch interfaces.