What is a characteristic of legacy inter-VLAN routing?

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What is a characteristic of legacy inter-VLAN routing?

Only one VLAN can be used in the topology.
The router requires one Ethernet link for each VLAN.
The user VLAN must be the same ID number as the management VLAN.
Inter-VLAN routing must be performed on a switch instead of a router.

Explanation: Multiple VLANs are supported with legacy inter-VLAN routing, but each VLAN requires its own Ethernet router link. Ethernet ports are limited on a router. That is why the router-on-a-stick model evolved. The user VLAN should never be the same number as the management VLAN and using a Layer 3 switch as a router is a modern technique, not a legacy one.

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