Nonstop Active Routing (NSR) JN0-364 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A network engineer is evaluating whether NSR can be used on a router that runs a legacy routing protocol that is not supported by NSR. The router has dual REs and meets all hardware requirements. What should the engineer do to ensure high availability for this protocol?

   • AEnable NSR anyway, as it will automatically support all routing protocols on the router.
   • BDisable the unsupported protocol and use a static route to ensure high availability.
   • CUse Graceful Restart (GR) for the unsupported protocol, which will allow the protocol to recover without dropping adjacencies.
   • DConfigure the unsupported protocol to use a different Routing Engine than the one running NSR.
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   For OSPF, what specific state does NSR synchronize to the standby RE to ensure a seamless switchover?

   • AThe OSPF neighbor state and the link-state database (LSDB).
   • BThe OSPF routing table only.
   • CThe OSPF hello timer values.
   • DOnly the OSPF area configuration.
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A service provider has a pair of MX960 routers configured with NSR. The routers are running BGP, OSPF, and IS-IS. During a switchover test, the network team observes that BGP and OSPF adjacencies remain established, but IS-IS adjacencies drop and reconverge. What is the most likely cause of this behavior?

   • AThe IS-IS protocol is configured with the graceful-restart option, which overrides NSR.
   • BIS-IS is not supported by NSR on this platform or Junos version.
   • CThe backup RE does not have enough memory to store the IS-IS state, so NSR cannot replicate it.
   • DThe IS-IS hello timer is set too low, causing the adjacency to time out during the switchover.
   Reveal Solution Discussion Select an answer first
5. 9foundation · easy

   Which software prerequisite must be met before enabling NSR on a Junos device?

   • AGraceful Restart (GR) must be enabled for all protocols.
   • BThe device must run the same version of Junos on both Routing Engines.
   • CGraceful Routing Engine Switchover (GRES) must be enabled.
   • DThe device must have a valid license for the NSR feature.
   Reveal Solution Discussion Select an answer first
6. 10expert · hard

   A network architect is designing a high-availability solution for a core router. The architect needs to ensure that during an RE switchover, the forwarding table is preserved and BGP adjacencies are maintained without relying on neighbor cooperation. The architect also needs to minimize the time it takes for the backup RE to become ready after a switchover. Which solution should the architect choose?

   • AGRES
   • BNSR
   • CGraceful Restart (GR)
   • DNSR with Graceful Restart (GR)
   Reveal Solution Discussion Select an answer first