Gateway and Policy JN0-460 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is the role of the MAC-VRF in EVPN?

   • ATo encapsulate and decapsulate VXLAN frames
   • BTo store the MAC addresses learned from the local segment and remote VTEPs
   • CTo authenticate BGP peers
   • DTo route IP traffic between VNIs
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   An EVPN-VXLAN fabric has multiple leaf switches, and the network team wants to restrict which MAC addresses are learned from a specific access switch to prevent a rogue device from injecting MAC routes into the fabric. What is the most effective way to achieve this?

   • ADisable MAC learning on the access switch's VLAN
   • BConfigure a route policy on the access switch to filter outbound Type-2 routes
   • CChange the route distinguisher (RD) on the access switch
   • DApply an import policy on the leaf switch's BGP session to filter Type-2 routes from the access switch
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   An administrator wants to prevent a specific MAC address from being advertised to remote VTEPs. Which EVPN policy mechanism should be used?

   • AA VXLAN VNI change
   • BA route distinguisher change
   • CA route target import policy
   • DA route target export policy
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A network team notices that a MAC address is flapping between two leaf switches in an EVPN-VXLAN fabric, causing constant route updates. The MAC address is associated with a virtual machine that has been migrated multiple times. What is the most effective way to reduce the flapping and stabilize the fabric?

   • ADisable MAC learning on one leaf switch
   • BIncrease the MAC aging timer on both leaf switches
   • CChange the route target (RT) on one leaf switch
   • DConfigure MAC mobility damping on the EVPN routes
   Reveal Solution Discussion Select an answer first
6. 5expert · hard

   A network team is troubleshooting a MAC learning issue in an EVPN-VXLAN fabric. A host on leaf switch A is sending traffic to a host on leaf switch B, but leaf switch B is not learning the source MAC address of the host on leaf switch A. The MAC-VRF on leaf switch B is correctly configured, and the VXLAN tunnel is up. What is the most likely cause of this issue?

   • AThe VXLAN VNI on leaf switch B is different from leaf switch A
   • BThe route target (RT) on leaf switch B is incorrect
   • CThe MAC aging timer on leaf switch B is too short
   • DThe Type-2 route for the MAC address is not being advertised by leaf switch A
   Reveal Solution Discussion Select an answer first