JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 9

Which two events cause a router to advertise a connected network to OSPF neighbors? (Choose two.)

Answer options

• A. When an OSPF adjacency is established.
• B. When an interface has the OSPF passive option enabled.
• C. When a static route to the 224.0.0.6 address is created.
• D. When a static route to the 224.0.0.5 address is created.

Correct answer: A, B

Explanation

The correct answers are A and B because a router will advertise its connected networks to OSPF neighbors when an adjacency is formed, allowing for route exchange. Option B is also correct since enabling the OSPF passive option allows the interface to still participate in OSPF routing while not sending OSPF hello packets. Options C and D are incorrect as they pertain to multicast addresses used by OSPF but do not trigger advertisements of connected networks.