JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2021) — Question 2

What is the OSPFv3 router ID?

Answer options

• A. 0.0.0.0
• B. 192.168.1.1
• C. 2001::1:2
• D. 2001::192.168.1.1

Correct answer: B

Explanation

The OSPFv3 router ID is typically an IPv4 address that uniquely identifies the router in the OSPF domain. Option B, 192.168.1.1, is a valid IPv4 address used as the router ID. The other options represent either an unspecified router ID, an IPv6 address, or a non-standard combination that does not conform to the requirements for an OSPFv3 router ID.