Configuration, Troubleshooting, and Monitoring of IGPs in Scenario-Based Contexts JN0-650 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which IS-IS metric is used by default in Junos to calculate the cost of a route?

   • AWide metric (32-bit)
   • BBandwidth metric
   • CNarrow metric (6-bit)
   • DDelay metric
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A financial institution requires OSPF authentication on all router-to-router links. The network team has configured MD5 authentication on all interfaces, but one adjacency fails to form. The `show ospf neighbor` command shows the neighbor stuck in `Init` state. Which verification step should the engineer perform first?

   • AVerify that the OSPF interface cost matches on both ends.
   • BVerify that the OSPF area ID matches on both ends.
   • CVerify that the authentication key ID matches on both ends.
   • DVerify that the OSPF network type matches on both ends.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   An IS-IS network has a router that is not forming an adjacency with its neighbor. The `show isis adjacency` command shows the neighbor in `Down` state. The interfaces are up and the MTU is consistent. Which configuration should the engineer check on both routers?

   • AThe IS-IS metric style (narrow or wide).
   • BThe IS-IS LSP lifetime setting.
   • CThe IS-IS level configuration (Level 1, Level 2, or both).
   • DThe IS-IS overload bit setting.
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   An OSPF network has a route that is not being advertised to a neighboring area. The `show ospf database` command on the area border router (ABR) shows the route in the router LSA but not in the summary LSA. Which configuration should the engineer check on the ABR?

   • AThe OSPF interface cost on the ABR's interface in the destination area.
   • BThe OSPF area range statement that summarizes routes between areas.
   • CThe OSPF export policy that controls redistribution into OSPF.
   • DThe OSPF import policy that controls routes received from OSPF neighbors.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   An IS-IS network experiences slow convergence after a link failure. The network team suspects that the SPF calculation is taking too long. Which configuration change should be made to speed up SPF recalculation?

   • ADecrease the SPF holddown timer to allow more frequent SPF calculations.
   • BIncrease the LSP generation interval to reduce the number of LSPs.
   • CIncrease the SPF holddown timer to allow more time for LSPs to arrive.
   • DDecrease the LSP refresh interval to keep the LSDB more current.
   Reveal Solution Discussion Select an answer first