Cisco Certified Network Professional 2026 – 400 Free Practice Questions to Pass the Exam

The command 'vlan id' is primarily utilized to create a new VLAN (Virtual Local Area Network) on a networking device, such as a Cisco switch. When you enter this command followed by a specific VLAN ID, it instructs the device to initiate a new VLAN with that ID, allowing for the segmentation of network traffic and enhancing the overall performance and security of the network.

VLANs enable logical grouping of devices regardless of their physical location, leading to improvements in network management and efficiency. This command is essential in scenarios where network administrators need to define VLANs for separating broadcast domains, managing traffic, or implementing security measures.

In this context, other options would not effectively describe the 'vlan id' command's purpose. For instance, removing an existing VLAN involves different commands, displaying VLAN configuration requires viewing commands that reference VLAN show outputs, and renaming a VLAN typically uses different syntax within VLAN configuration mode. Thus, the focus on the creation aspect emphasizes the command's role in facilitating VLAN management in a network environment.