Virtualization allows network administrators to dynamically make configuration changes to all network devices.

Virtualization can lower costs because there are fewer physical devices that need to be purchased and managed.

Virtualization can increase the available network bandwidth because their interface speeds are only limited by the host device.

Virtualization allows network administrators to dynamically add and remove services beingprovided

You can use OSPFv2 for IPv4 and OSPFv3 for IPv6 at the same time.

You must use OSPFv3 to support both address families.

You can use OSPFv2 to support both address families.

You must use IS-4S to support both address families.

RSVP requires the traffic engineering database (TED) to find the best path across the network.

LDP uses EROs to influence the path of an LSP and enable traffic engineering.

LDP leverages the IGP to find the best path across the network.

RSVP enables an administrator to configure different traffic types to take different paths across the MPLS network.