Which VLAN is commonly used for secure management access to network devices?

Which VLAN is commonly used for secure management access to network devices?

• A. Data VLAN
• B. Voice VLAN
• C. Native VLAN
• D. Management VLAN

Answer: (D)

Using a dedicated management VLAN is the way to secure admin access to network devices because it keeps control-plane traffic separate from user data. This isolation lets you restrict who can reach devices, apply strong access controls, enable detailed logging, and use encrypted management sessions (like SSH or HTTPS) without exposing them to normal user traffic. Placing management on a data VLAN would mix admin activity with user data and raise security risks. The Voice VLAN is intended for VoIP traffic and isn’t used for device management. The Native VLAN is simply untagged traffic on a trunk and isn’t designed as a secure, dedicated path for management, so it’s not suitable for secure admin access.

Using a dedicated management VLAN is the way to secure admin access to network devices because it keeps control-plane traffic separate from user data. This isolation lets you restrict who can reach devices, apply strong access controls, enable detailed logging, and use encrypted management sessions (like SSH or HTTPS) without exposing them to normal user traffic. Placing management on a data VLAN would mix admin activity with user data and raise security risks. The Voice VLAN is intended for VoIP traffic and isn’t used for device management. The Native VLAN is simply untagged traffic on a trunk and isn’t designed as a secure, dedicated path for management, so it’s not suitable for secure admin access.