Which three statements describe the similarities between OSPFv2 and OSPFv3?

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#1

Which three statements describe the similarities between OSPFv2 and OSPFv3? (Choose three.)

They both are link-state protocols.*
They both use the global address as the source address when sending OSPF messages.
They both share the concept of multiple areas.*
They both support IPsec for authentication.
They both use the same DR/BDR election process.*
They both have unicast routing enabled by default.