Metrics and Route Summarization JN0-664 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which Junos command is used to verify that a summarized route has been installed in the routing table?

   • Ashow ospf interface
   • Bshow ospf neighbor
   • Cshow ospf database
   • Dshow route protocol ospf
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A service provider has a large OSPF network with multiple areas. The network engineer is considering route summarization to improve stability. However, the engineer is concerned about the impact of summarization on routing precision and path selection. What is a valid trade-off the engineer should consider?

   • ASummarization requires all routers to have the same reference bandwidth.
   • BSummarization eliminates the need for OSPF authentication.
   • CSummarization reduces the LSDB size and SPF calculation frequency, but it can lead to suboptimal routing if the summary route does not reflect the most specific paths.
   • DSummarization increases the LSDB size but improves convergence time.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   An engineer changes the OSPF reference bandwidth from 100 Mbps to 1000 Mbps. What is the impact on the cost of a 1 Gbps interface?

   • AThe cost changes from 1 to 100.
   • BThe cost changes from 1 to 10.
   • CThe cost remains 1.
   • DThe cost changes from 10 to 1.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which type of router is responsible for configuring external route summarization in OSPF?

   • AArea Border Router (ABR)
   • BBackbone Router
   • CInternal Router
   • DAutonomous System Boundary Router (ASBR)
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   An engineer manually configures the OSPF cost on an interface to 50. What is the primary effect of this configuration on route selection?

   • AIt changes the OSPF router ID.
   • BIt influences the OSPF path selection by making the interface more or less preferred.
   • CIt disables OSPF on the interface.
   • DIt changes the OSPF area type.
   Reveal Solution Discussion Select an answer first