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Juniper JN0-682 Exam Questions
Data Center, Professional (Page 4 )

Updated On: 16-Feb-2026
Page 4 of 32
PDF with 154 Questions

Referring to the exhibit,



you have a data center in which only the spine devices are using EVPN and VXLAN. The leaf nodes are multihomed in active-active mode to the spine nodes through ESI LAG interfaces. In this design, a link failure on the interface connecting the spine nodes would also cause all traffic from the spine to the leaf nodes to drop.
In this scenario, which command configured on which nodes would solve this problem?

  1. the disable protocols evpn no-core-isolation command on the spine nodes
  2. the set protocols evpn no-core-isolation command on the spine nodes
  3. the disable protocols evpn no-core-isolation command on the leaf nodes
  4. the set protocols evpn no-core-isolation command on the leaf nodes

Answer(s): A



You are evaluating which method to use for learning MAC addresses in your VXLAN network.
Which statement is true in this scenario?

  1. Multicast exchanges MAC addresses through data plane learning and is more reliable than EVPN.
  2. EVPN exchanges MAC addresses through control plane learning and is more reliable than multicast.
  3. EVPN exchanges MAC addresses through data plane learning and is more reliable than multicast.
  4. Multicast exchanges MAC addresses through control plane learning and is not more reliable than
    EVPN.

Answer(s): B

Explanation:

Ethernet VPN (EVPN) provides control plane-based MAC address learning. This means that MAC addresses are exchanged and learned via BGP messages rather than through traditional data plane flooding. This approach is more scalable and reliable compared to multicast-based MAC address learning, where MAC addresses are learned through data plane flooding. Control plane learning with EVPN is less prone to issues like broadcast storms and provides a more efficient and stable mechanism for MAC address dissemination in large-scale networks.


Reference:

Juniper Networks EVPN Overview and Configuration Guide.



Referring to the exhibit, which two statements are correct? (Choose two.)

  1. Seamless EVPN VXLAN stitching is in use.
  2. Switch01 is a spine device.
  3. An OTT data center interconnect is in use.
  4. Switch01 is a leaf device.

Answer(s): A,D



You are asked to implement a monitoring and telemetry solution for the QFX Series devices in your IP fabric that uses a push model to collect both system event data and statistical data for your QFX Series devices.

Which technology satisfies your requirements?

  1. JunosXMLAPI
  2. REST API
  3. SNMP
  4. Junos Telemetry Interface

Answer(s): D

Explanation:

The Junos Telemetry Interface (JTI) is the ideal solution for monitoring and telemetry in an IP fabric using QFX Series devices. JTI uses a push model to stream system event data and statistical data from the devices. It provides real-time, granular monitoring capabilities, which is more efficient and scalable compared to traditional polling methods like SNMP. By pushing data to a telemetry server, JTI allows for more dynamic and immediate insights into network performance and health.


Reference:

Juniper Networks QFX Series Documentation - Junos Telemetry Interface.



You are configuring an MX Series router to act as a Layer 3 gateway to route traffic between VXLANs in different data centers across a WAN connection. In this scenario, what must you do to enable this communication?

  1. Configure route reflectors.
  2. Change the UDP port used by the VXLANs.
  3. Configure the IRB interfaces to connect the VXLANs.
  4. Enable PIM on all interfaces.

Answer(s): C

Explanation:

To enable communication between VXLANs in different data centers across a WAN connection using an MX Series router, Integrated Routing and Bridging (IRB) interfaces must be configured. IRB interfaces provide Layer 3 routing capabilities within a VXLAN overlay network, allowing for inter-

VXLAN routing. By configuring IRB interfaces on the MX router, you enable it to act as a Layer 3 gateway, routing traffic between the different VXLANs across the data centers.


Reference:

Juniper Networks MX Series Documentation - VXLAN and EVPN Configuration.






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