JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2022) — Question 41

Which two functions are performed by the OSPF designated router? (Choose two.)

Answer options

• A. It advertises link-state information to the AS
• B. It designates some routers as inactive when not needed
• C. It forms adjacencies with all the other OSPF routers on the link
• D. It chooses the backup designated router

Correct answer: A, C

Explanation

The correct answer includes options A and C, as the OSPF designated router is responsible for advertising link-state information to the Autonomous System (AS) and forming adjacencies with all other OSPF routers on the same link. Options B and D are incorrect because the designated router does not deactivate routers nor does it directly choose the backup designated router; it simply identifies it based on priority.