IP Fabric Architecture JN0-683 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A service provider is deploying an IP fabric to host multi-tenant environments. They plan to use EVPN-VXLAN to provide Layer 2 adjacency between VMs in different racks. The underlay will use BGP. Which statement correctly describes the relationship between the underlay and overlay in this design?

   • AThe underlay and overlay are the same network, with VXLAN used only to extend VLANs across the fabric.
   • BThe overlay uses OSPF to exchange tenant MAC routes, while the underlay uses BGP for VTEP discovery.
   • CThe underlay provides IP connectivity between VTEPs, while the overlay carries the VXLAN-encapsulated tenant traffic between them.
   • DThe overlay provides IP connectivity between VTEPs, while the underlay carries the VXLAN-encapsulated tenant traffic.
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2. 7foundation · medium

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

   • AIt provides the control plane for MAC learning.
   • BIt replaces the need for BGP in the fabric.
   • CIt provides routing between tenants in the overlay.
   • DIt encapsulates Layer 2 frames in IP/UDP packets for transport across the Layer 3 underlay.
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4. 8foundation · medium

   What is a primary benefit of using an IP fabric architecture in a data center network?

   • AIt eliminates the need for any routing protocol by using static routes.
   • BIt requires a full mesh of physical connections between every switch in the network.
   • CIt provides a simple, scalable Layer 3 foundation that supports equal-cost multipath (ECMP) for efficient traffic distribution.
   • DIt guarantees zero packet loss during any link failure without requiring any protocol convergence.
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5. 9foundation · medium

   Which design consideration is important for ensuring redundancy in an IP fabric?

   • ADisabling ECMP to avoid complex load balancing.
   • BConnecting each leaf switch to at least two spine switches.
   • CUsing a single spine switch to simplify the design.
   • DPlacing all servers on a single leaf switch.
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6. 10foundation · medium

   In a spine-and-leaf topology, what is the typical role of the spine switches?

   • AThey are the only devices that perform routing decisions in the fabric.
   • BThey run Spanning Tree Protocol to prevent loops in the fabric.
   • CThey connect directly to servers and storage devices.
   • DThey provide the interconnection between leaf switches and act as the fabric's backbone.
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