Graceful Restart (GR) JN0-281 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A data center network uses BGP between spine and leaf switches. The network team wants to enable Graceful Restart to minimize disruption during planned maintenance. However, the security team requires that BGP route updates be authenticated using MD5. The team is concerned that GR might not work with MD5 authentication. What is the correct assessment?

   • AGR and MD5 authentication are independent features and can be used together without conflict.
   • BMD5 authentication prevents GR from working because the restarting router cannot re-authenticate quickly enough.
   • CGR requires that MD5 authentication be disabled because the GR helper cannot authenticate the restarting peer.
   • DGR will work, but only if the MD5 key is changed to a longer key to support the GR capability.
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   Which log message would indicate that a Graceful Restart has occurred on a Junos device?

   • ARouting table updated
   • BOSPF neighbor down
   • CGraceful restart completed
   • DInterface link up
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A data center network uses IS-IS as the IGP. The network team is evaluating Graceful Restart to minimize the impact of a planned routing process restart on a core router. Which benefit is the primary motivation for implementing GR in this scenario?

   • AIt prevents the restarting router's neighbors from recalculating routes and keeps transit traffic flowing through the router.
   • BIt enables the router to use a backup Routing Engine to take over immediately during the restart.
   • CIt reduces the time required for the routing process to rebuild its full routing table from scratch.
   • DIt allows the router to restart its routing process without any packet loss on directly connected links.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   What is the primary purpose of Graceful Restart (GR) in a high availability network?

   • ATo reduce the time required for routing protocols to reconverge after a link failure
   • BTo synchronize routing tables between primary and backup routers in a cluster
   • CTo maintain data forwarding through a router while its control plane restarts
   • DTo automatically reroute traffic around a failed link without any packet loss
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which benefit does Graceful Restart provide in a network that experiences a routing protocol process failure?

   • AIt minimizes traffic disruption by allowing the router to continue forwarding packets during the restart
   • BIt automatically reboots the router to recover from the failure
   • CIt ensures that the router's forwarding table is rebuilt from scratch after the restart
   • DIt prevents all routing protocol updates from being sent to neighboring routers
   Reveal Solution Discussion Select an answer first