A network engineer is configuring VXLAN and needs to ensure that the outer UDP source port provides good entropy for load balancing in the underlay. What is the recommended practice?

Disable UDP checksum calculation to improve performance.

Use a hash of the inner packet's headers to generate the outer UDP source port.

Set the UDP source port to the same value as the destination port.

Use a fixed UDP source port of 4789 for all VXLAN traffic.

In a VXLAN deployment using multicast for BUM traffic, a VTEP receives a multicast packet on a group associated with VNI 500. What does the VTEP do with the inner frame?

It routes the frame based on the inner destination IP address.

It re-encapsulates the frame and sends it to the multicast group again.

It drops the frame because multicast is not used for VXLAN.

It decapsulates the frame and forwards it to all local ports in the VLAN mapped to VNI 500.

In a BGP EVPN VXLAN deployment, a new VTEP is added to the fabric. How does this VTEP become known to the other VTEPs in the same VNI?

The new VTEP is manually configured on every other VTEP.

The new VTEP sends a multicast join message to a group that all VTEPs subscribe to.

The new VTEP establishes a BGP session and advertises its VNI and loopback IP address via EVPN routes.

The new VTEP floods an ARP request across the underlay to find other VTEPs.

What is a key underlay requirement for VXLAN to function correctly?

The underlay must use BGP as the routing protocol

The underlay must be a single Layer 2 domain

The underlay must have IP connectivity between VTEPs

Juniper NetworksCertified Specialist, Mist AI Wired (JNCIS-MistAI)

Domain 5Objective 1

VXLAN Fundamentals JN0-460 Practice Questions (Page 6)

Part of the Campus EVPN-VXLAN domain, which makes up ~11% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–2 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

8concepts

Questions 26–30

26expert · medium
A network engineer is configuring VXLAN and needs to ensure that the outer UDP source port provides good entropy for load balancing in the underlay. What is the recommended practice?
Select an answer first
27application · medium
In a VXLAN deployment using multicast for BUM traffic, a VTEP receives a multicast packet on a group associated with VNI 500. What does the VTEP do with the inner frame?
Select an answer first
28application · medium
In a BGP EVPN VXLAN deployment, a new VTEP is added to the fabric. How does this VTEP become known to the other VTEPs in the same VNI?
Select an answer first
29foundation · easy
What is the size of the VXLAN Network Identifier (VNI) field in the VXLAN header?
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30foundation · easy
What is a key underlay requirement for VXLAN to function correctly?
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