JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing — Question 61

On a Junos device with dual Routing Engine (RE), which two statements correctly describe the expected behavior if the primary RE fails? (Choose two.)

Answer options

• A. The backup RE will assume the master role once the packet forwarding engine (PFE) restarts
• B. The backup RE will immediately assume the master role
• C. The new master RE restarts the routing protocol process (rpd) and establishes any required adjacencies based on the configuration.
• D. The new master RE maintains the existing protocol adjacencies initially established by the previous master RE

Correct answer: A, C

Explanation

Option A is correct because the backup RE takes over only after the PFE restarts, ensuring proper functioning. Option C is also correct as the new master RE will restart rpd and set up the required adjacencies. Options B and D are incorrect; the backup RE does not assume the master role immediately, and the new master RE does not maintain existing adjacencies but rather re-establishes them.