Juniper JN0-680 Actual Free Exam Questions & Community Discussion

Exam Code/Number: JN0-680
Exam Name/Title: Data Center, Professional
Certification Provider: Juniper
Corresponding Certification: JNCIP-DC

Exam Questions: 66
Updated On: May 29, 2026

Question #22

Exhibit:

You created an IP Fabric topology as shown in the exhibit and are having connectivity problems.
What is causing these problems?

A. There is an Overlapping address.

B. 192.168.0.0 is not a valid endpoint address.

C. /31 addresses are not supported on Juniper devices.

D. The 192.168 network is reserved and should not be used for IP fabrics.

Discussion 0

Correct Answer: A Vote an answer

Question #23

You have an EBGP-based IP Fabric.
Why do you need an export policy on each leaf in this scenario?

A. to advertise local routes with the router reflector

B. to ensure a full mesh is formed between peers

C. to advertise local server-facing IP prefix

D. to accept remote server-facing IP prefixes

Discussion 0

Correct Answer: C Vote an answer

Question #24

A customer has a 3-stage Clos architecture with three spine devices as shown in the exhibit.
If a single spine device fails, what percentage of the remaining bandwidth will be available from leaf node to leaf node?

A. approximately 33%

B. approximately 75%

C. approximately 25%

D. approximately 66%

Discussion 0

Correct Answer: D Vote an answer

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Question #25

You are having management connectivity problems with a mixed-mode Virtual Chassis.
Which statement is correct in this scenario?

A. Each member's me0 MAC address should match the MAC address on the vme.

B. The current me0 MAC address should match the MAC address of the vme.

C. The master RE's me0 MAC address should match the MAC address of the vme.

D. Each member's me0 MAC address should not match the MAC address of the vme.

Discussion 0

Correct Answer: B Vote an answer

Question #26

You are performing an in-service software upgrade (ISSU) on an QFX5100 Series device.
Which two statements are correct in this scenario? (Choose two.)

A. The mgd process is used to validate system configuration requirements.

B. The dcd process is used to validate system configuration requirements.

C. The vccpd process is used to synchronize the state of the master RE to the new backup RE.

D. The ksyncd process is used to synchronize the state of the master RE to the new backup RE.

Discussion 0

Correct Answer: A,D Vote an answer

Question #27

You are developing an EVPN service between your data centers to enable Layer 2 stretch and Virtual Machine Traffic Optimization (VMTO) operations.
In this scenario, which action must be performed on the IRB interface to accomplish this task?

A. Configure different IP addresses and different MAC addresses on each PE.

B. Configure different IP addresses but the same MAC address on each PE.

C. Configure the same IP address and let the MAC address be dynamically assigned on each PE.

D. Configure the same IP address and the same MAC address on each PE.

Discussion 0

Correct Answer: D Vote an answer

Question #28

You are deploying a VXLAN using EVPN signaling overlay network.
PE1 and PE2 are multihomed to the connected CE device.
You notice that the traffic is not load-balancing as expected.
Referring to the exhibit, which two actions will solve this problem? (Choose two.)

A. Set the LACP system ID on PE2 to 00:00:00:00:00:01.

B. Set the route distinguisher on PE2 to 11.11.11.11:100.

C. Set the ESI on both devices to 00:00:00:00:00:00:00:00:00:00.

D. Set the ESI on PE2 to 00:11:11:11:11:11:11:11:11:11.

Discussion 0

Correct Answer: A,D Vote an answer

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