VXLAN Fundamentals JN0-460 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Why is MTU an important consideration in VXLAN networks?

   • AVXLAN reduces the MTU, so the underlay must be adjusted downward
   • BMTU only affects multicast traffic in VXLAN
   • CMTU is not relevant because VXLAN uses TCP segmentation
   • DVXLAN adds overhead, so the underlay MTU must be increased to avoid fragmentation
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2. 7application · easy

   A network analyst is examining a VXLAN packet capture and notes that the outer UDP destination port is 4789. What is the significance of this port number?

   • AIt is the well-known port assigned to VXLAN, used to identify VXLAN-encapsulated packets.
   • BIt is the port used for BGP EVPN control plane messages.
   • CIt is the port used for VXLAN fragmentation control.
   • DIt is the port used for VXLAN multicast group management.
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4. 8application · medium

   A VTEP receives a known unicast frame from a local host destined to a MAC address that is already in its forwarding table, associated with a remote VTEP. How does the VTEP handle this frame?

   • AEncapsulate the frame in a VXLAN header with the destination VNI and send it via unicast to the remote VTEP's IP address.
   • BDrop the frame because VXLAN only supports multicast forwarding.
   • CDecapsulate the frame and forward it natively on the local VLAN.
   • DFlood the frame to all VTEPs in the VNI using multicast.
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5. 9foundation · easy

   Which fields are included in the VXLAN header?

   • ASource and destination IP addresses
   • BSource and destination MAC addresses
   • CVNI and flags
   • DTCP port numbers
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6. 10application · medium

   A campus network team is extending a Layer 2 segment between two access switches across a routed IP fabric. The access switches support VXLAN but the core routers do not. The team must ensure the Layer 2 broadcast domain is preserved across the fabric without changing the core configuration. What should they implement?

   • AReplace the core routers with Layer 2 switches to extend the VLAN natively.
   • BEnable IRB on the core routers to route between the two access switches.
   • CConfigure VXLAN tunnels between the access switches, using the routed core as the IP underlay.
   • DCreate a GRE tunnel between the access switches to carry the Layer 2 traffic.
   Reveal Solution Discussion Select an answer first