Juniper JN0-681 Exam Questions

Questions for the JN0-681 were updated on : Dec 01 ,2025

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Question 1

Which EVPN route type prevents BUM traffic from looping back to a multihomed host?

  • A. IP prefix route
  • B. Ethernet autodiscovery route
  • C. Ethernet segment route
  • D. inclusive multicast-Ethernet tag route
Answer:

b

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Question 2

Referring to the exhibit, Host 1 and Host 3 have exchanged traffic.

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In this scenario, which statement is true?

  • A. Leaf 2 does not learn Host 1's MAC address until Host 1 and Host 2 send traffic to each other.
  • B. Leaf 2 learns Host 1's MAC address through periodic updates from Spine 2.
  • C. Leaf 2 learns Host 1's MAC address when Host 3 learns Host 1's MAC address.
  • D. Leaf 2 learns Host 1's MAC address when Leaf 1 queries Host 1.
Answer:

d

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Question 3

Which two statements describe an IP fabric? (Choose two.)

  • A. Open standards allow for vendor interoperability.
  • B. Each leaf should have a connection to each spine.
  • C. xSTP protocols should be used to prevent loops.
  • D. Traffic should always follow a single path.
Answer:

bc

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Question 4

Referring to the VTEP output shown in the exhibit, which two statements are true? (Choose two.)

  • A. The MAC address 52:54:00:2c:4b:a2 belongs to a local host.
  • B. The MAC address 52:54:00:5e:88:6a belongs to a remote host.
  • C. The MAC address 52:54:00:2c:4b:a2 belongs to a remote host.
  • D. The MAC address.52:54:00:5e:88:6a belongs to a local host.
Answer:

bc

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Question 5

In the exhibit, VM1 is part of the same VXLAN segment as VM3.

Which type of message will R1 initially send to R2 so that VM1 receives BUM traffic from VM3?

  • A. IGMP Join (S,G)
  • B. PIM Join
  • C. IGMP Join (*,G)
  • D. PIM Register message
Answer:

b

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Question 6

You work in a data center where VMs and hosts are frequently moved. Your design needs to eliminate inefficient traffic flows.
In this scenario, which two solutions will satisfy this requirement? (Choose two.)

  • A. VXLAN
  • B. EVPN
  • C. VMTO
  • D. VPLS
Answer:

ab

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Question 7

You are troubleshooting an L3VPN that is part of an EVPN/MPLS DCI. You notice that the EVPN overlay BGP session toward 10.29.50.4 is unable to establish.

Why is the BGP session failing to establish?

  • A. The vrf-table-label value is not configured in the remote PE.
  • B. The route-distinguisher value on the local PE is incorrect.
  • C. There is no route for 192.168.5.5 in inet.3.
  • D. There is no route for 192.168.5.5 in VPN.inet.0.
Answer:

a

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Question 8

You are building a new IP fabric data center underlay network and want to ensure predictable load-balancing behavior for traffic traversing the fabric.
What are two approaches you should take to satisfy the requirement in this scenario? (Choose two.)

  • A. Ensure that all uplinks are 40GbE.
  • B. Ensure that every leaf node has a link to every other leaf node.
  • C. Ensure that every leaf node has an uplink to every spine node.
  • D. Ensure that all spine devices are the same switch model.
Answer:

cd

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Question 9

You are asked to enable plug-and-play for future line card switches in an active VCF without making any future Junos configuration changes. You are also required to ensure that all new line cards are automatically upgraded to the correct Junos version without any manual intervention.
In this scenario, which two actions will accomplish this task? (Choose two.)

  • A. Ensure that the newly inserted line card's MAC addresses are present in the DHCP configuration for ZTP.
  • B. Configure the auto-sw-update parameter on the VCF before inserting new line cards.
  • C. Set the Virtual Chassis as pre-provisioned before the line cards are inserted.
  • D. Set the Virtual Chassis as auto-provisioned before the line cards are inserted.
Answer:

bd

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Question 10

You are designing a network for a small data center.
In this scenario, which underlay protocol allows for the simplest implementation?

  • A. OSPF
  • B. IBGP
  • C. EBGP
  • D. MPLS
Answer:

c

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