EVPN-signaled VXLAN for DCI JN0-683 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   When implementing a Layer 2 gateway at the DCI edge, what is a key requirement for extending VLANs between sites?

   • AThe VLAN must be mapped to a VNI that is consistent across both sites.
   • BThe underlay must use multicast for BUM traffic.
   • CThe VLAN ID must be different at each site to avoid conflicts.
   • DA Layer 3 gateway must be configured on the same device.
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2. 7foundation · easy

   In an EVPN-VXLAN DCI, which route type is used to advertise IP prefixes for inter-subnet routing?

   • AType-5
   • BType-4
   • CType-3
   • DType-2
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4. 8expert · hard

   An administrator is troubleshooting an EVPN-VXLAN DCI issue. The BGP EVPN sessions are up, and Type-2 routes are being exchanged. However, hosts on Site A cannot ping hosts on Site B. The administrator has verified that the VLAN-to-VNI mapping is correct and that the route targets are correct. What is the next most likely thing to check?

   • AVerify that the VNI is configured on the spine switches.
   • BVerify that the hosts are in the same VLAN.
   • CVerify that the BGP route reflector is configured correctly.
   • DVerify that the VTEPs can ping each other's loopback addresses and that the underlay MTU is sufficient.
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5. 9application · medium

   A company operates two data centers connected by a 100 Gbps dark fiber link. They currently use a traditional DCI solution with separate VLANs extended using Q-in-Q and OSPF for routing. The network team wants to scale to support multiple tenants with isolated Layer 2 domains and improve convergence time. They are evaluating EVPN-VXLAN for DCI. Which benefit is the primary driver for this migration?

   • AEVPN-VXLAN provides a control plane for MAC/VXLAN learning, enabling faster convergence and multi-tenant isolation compared to data-plane learning.
   • BEVPN-VXLAN eliminates the need for any routing protocol in the underlay, simplifying the network design.
   • CEVPN-VXLAN uses MPLS labels for encapsulation, providing better QoS than standard VXLAN.
   • DEVPN-VXLAN automatically provides a Layer 3 gateway at every VTEP, removing the need for separate routers.
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6. 10foundation · easy

   Why is MTU an important underlay requirement for EVPN-VXLAN DCI?

   • ABecause the underlay must support jumbo frames for all traffic.
   • BBecause EVPN routes require a larger MTU for BGP updates.
   • CBecause VXLAN requires a minimum MTU of 9000 bytes.
   • DBecause VXLAN encapsulation adds overhead, requiring a larger MTU on the underlay to avoid fragmentation.
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