What task does the "show vlan" command perform on a switch?

What task does the "show vlan" command perform on a switch?

• A. Displays interface configurations
• B. Lists all VLANs configured on the switch
• C. Shows current DHCP leases
• D. Outputs MAC address learning table

Answer: (B)

The "show vlan" command is specifically designed to provide an overview of all the VLANs that have been configured on a switch. When this command is executed, it displays important details such as the VLAN IDs, names, status, and associated ports for each VLAN. This information is crucial for network administrators because it allows them to understand the segmentation of the network and verify that VLAN configurations are set up correctly. In contrast, the other choices pertain to different functions within a switch. For instance, displaying interface configurations, showing current DHCP leases, and outputting the MAC address learning table are all accomplished through different commands that target specific aspects of switch operation. Therefore, the function of listing all VLANs configured on the switch accurately describes the role of the "show vlan" command.

The "show vlan" command is specifically designed to provide an overview of all the VLANs that have been configured on a switch. When this command is executed, it displays important details such as the VLAN IDs, names, status, and associated ports for each VLAN. This information is crucial for network administrators because it allows them to understand the segmentation of the network and verify that VLAN configurations are set up correctly.

In contrast, the other choices pertain to different functions within a switch. For instance, displaying interface configurations, showing current DHCP leases, and outputting the MAC address learning table are all accomplished through different commands that target specific aspects of switch operation. Therefore, the function of listing all VLANs configured on the switch accurately describes the role of the "show vlan" command.