IP Fabric Routing JN0-683 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   When configuring OSPF as the underlay routing protocol in an IP fabric, what is a typical requirement on each spine and leaf switch?

   • AOSPF must be configured with a single area and authentication on loopback interfaces only
   • BEach switch must have a unique router ID and OSPF enabled on all fabric-facing interfaces
   • CAll switches must be in the same OSPF area and have matching interface costs
   • DAll switches must use the same OSPF process ID and have identical router IDs
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A data center team is building a new IP fabric with 8 leaf and 4 spine switches. They want to use a single underlay routing protocol that supports ECMP across all spine links, scales to thousands of routes, and allows per-neighbor policy control. Which protocol should they choose?

   • ABGP with eBGP sessions between spines and leaves
   • BStatic routes with per-link metrics
   • COSPF with multiple areas
   • DRIP with equal-cost load balancing
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   In a BGP EVPN data center, how does the overlay routing protocol interact with the underlay to provide tenant connectivity?

   • AThe overlay replaces the underlay routing protocol, so OSPF or BGP is not needed
   • BThe overlay protocol is used only for management traffic, not for tenant data
   • CThe underlay carries tenant data packets in their original form without any encapsulation
   • DThe overlay uses the underlay to exchange BGP EVPN routes and to forward encapsulated tenant traffic between leaf switches
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   A leaf switch in an IP fabric is not receiving routes from a spine switch. What is a common cause of this issue?

   • AThe leaf switch has too many routes in its routing table
   • BThe spine switch is using a different OSPF area than the leaf switch
   • CThe spine switch has a lower OSPF priority than the leaf switch
   • DThe BGP autonomous system number is misconfigured on one of the switches
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A leaf switch in an OSPF-based IP fabric is not forming an adjacency with a spine. The engineer checks the OSPF configuration and sees that the area ID is 0.0.0.0 on the leaf and 0.0.0.1 on the spine. What is the issue?

   • AThe OSPF network type is mismatched
   • BThe OSPF router ID is duplicated
   • CThe OSPF area ID mismatch prevents the adjacency from forming
   • DThe OSPF interface cost is too high
   Reveal Solution Discussion Select an answer first