IP Fabric Architecture JN0-683 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A financial services firm is modernizing its data center. The network team wants to reduce the number of tiers in the network to lower latency and simplify operations. They also need to scale capacity by adding more switches without redesigning the network. Which architecture should they adopt?

   • AA spine-and-leaf IP fabric with a Layer 3 underlay.
   • BA three-tier hierarchical model with core, aggregation, and access layers.
   • CA hub-and-spoke design with a single core router.
   • DA flat Layer 2 network with spanning tree for loop prevention.
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A service provider is deploying EVPN-VXLAN with a centralized anycast gateway on the spine switches. The design works but the network team notices that inter-subnet traffic between servers on different leaves is traversing the spine and back, causing high latency. They want to optimize the design. What is the most effective change?

   • AAdd more spine switches to increase the bandwidth between leaves.
   • BMove the anycast gateway to the leaf switches to enable distributed routing.
   • CEnable VXLAN routing on the spine switches to speed up encapsulation.
   • DUse OSPF instead of BGP for the underlay to reduce routing overhead.
   Reveal Solution Discussion Select an answer first
4. 13expert · hard

   A network engineer is designing an IP fabric underlay. They are choosing between eBGP and OSPF. The fabric will eventually scale to 200 leaf switches. The engineer is concerned about the control-plane overhead and convergence time. Which statement best reflects the trade-off between the two protocols?

   • AOSPF converges faster than eBGP in all cases, making it the better choice for large fabrics.
   • BOSPF scales better than eBGP because it uses a single database and does not require per-neighbor configuration.
   • CeBGP and OSPF have identical scaling characteristics, so the choice is purely based on vendor preference.
   • DeBGP scales better than OSPF because it does not require flooding link-state information, but it requires careful ASN planning and per-neighbor configuration.
   Reveal Solution Discussion Select an answer first
5. 14foundation · medium

   Which characteristic is a key benefit of an IP fabric compared to a traditional spanning-tree-based Layer 2 network?

   • AIt uses all available links for forwarding traffic simultaneously.
   • BIt prevents any traffic from being forwarded through intermediate switches.
   • CIt requires a single control plane instance for the entire fabric.
   • DIt eliminates the need for IP addressing on the underlay network.
   Reveal Solution Discussion Select an answer first
6. 15foundation · medium

   What is the role of EVPN in an EVPN-VXLAN IP fabric?

   • AIt serves as the control plane to distribute MAC and IP reachability information.
   • BIt provides the encapsulation format for tenant traffic.
   • CIt replaces the need for an underlay routing protocol.
   • DIt provides the physical connectivity between switches.
   Reveal Solution Discussion Select an answer first