JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2023) — Question 12

When using 0SPFv3 for an IPv4 environment, which statement is correct?

Answer options

• A. OSPFv3 only supports IPv4.
• B. OSPFv3 is not backward compatible with IPv4.
• C. OSPFv3 supports both IPv6 and IPv4, but not in the same routing instance.
• D. OSPFv3 supports IPv4 only on interfaces with family inet6 defined.

Correct answer: D

Explanation

The correct answer is D because OSPFv3 is designed primarily for IPv6, but it can support IPv4 on interfaces explicitly configured for family inet6. Options A and B are incorrect as OSPFv3 does not exclusively support IPv4 and is not backward compatible with it. Option C is misleading because OSPFv3 does not support both versions in the same routing instance.