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

Question:
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.

Explanation: Only OSPFv2 messages are sourced from the IP address of the exit interface; OSPFv3 uses the link-local address of the exit interface. Only OSPFv3 uses IPsec; OSPFv2 uses plaintext or MD5 authentication. Unicast routing is enabled by default only with OSPFv2.

Exam with this question: CCNA 2 (v5.0.3 + v6.0) Chapter 8 Exam Answers
Exam with this question: CCNA 3 v6 Chapter 8: Check Your Understanding