Data Centers: 66 (JN0-680) - Juniper

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Sample JN0-680 Exam Questions & Explanations

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Question #1 Verified Q&A
Which EVPN service consists of a single broadcast domain per EVPN instance?
A a VLAN-based service interface
B a VLAN bundle service interface
C a port-based service interface
D a port-based VLAN-aware service interface
Correct Answer: a VLAN-based service interface
Question #2 Verified Q&A
You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center. In this scenario, which two statements are correct? (Choose two.)
A Only 10GbE VCP connections can be used between the QFX5100s and the EX4300s.
B The QFX5100 devices cannot assume the line card role in the Virtual Chassis.
C The EX4300 devices can only assume a line card role in the Virtual Chassis.
D Some hardware capabilities are limited by the capabilities of the EX4300 switches.
Correct Answer: The EX4300 devices can only assume a line card role in the Virtual Chassis., Some hardware capabilities are limited by the capabilities of the EX4300 switches.
Question #3 Verified Q&A
A customer notices that all traffic is traveling over a single link within their partially meshed IP Fabric using IBGP. While troubleshooting, the customer notices that the configuration is missing a configuration parameter.<br />
<br />
Which parameter would the customer use to solve this problem?
A accept-remote-nexthop
B advertise-peer-as
C multihop
D add-path
Correct Answer: add-path
Question #4 Verified Q&A
<img src="https://examsqa.com/storage/question-images/data-centers-66-jn0-680_page_2_Im2.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" /><br />
<br />
A customer has a 3-stage Clos architecture with three spine devices as shown in the exhibit.<br />
If a single spine device fails, what percentage of the remaining bandwidth will be available from leaf<br />
node to leaf node?
A approximately 75%
B approximately 25%
C approximately 66%
D approximately 33%
Correct Answer: approximately 66%
Explanation:
<img src="https://examsqa.com/storage/question-images/data-centers-66-jn0-680_page_2_Im3.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" />
Question #5 Verified Q&A
Referring to the exhibit, which hardware change would be made to the IP Fabric to ensure an exact 4:1 oversubscription ratio?
A Upgrade the fabric links to 100GbE.
B Add two leaf nodes to the IP Fabric.
C Add a spine node to the IP Fabric.
D Add three leaf nodes to the IP Fabric.
Correct Answer: Add a spine node to the IP Fabric.

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Our JN0-680 (Data Centers: 66) practice question bank currently includes 66 verified questions with comprehensive explanations.
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Yes, all Juniper JN0-680 practice questions are regularly updated and verified against current exam objectives.
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The JN0-680 (Data Centers: 66) question bank is built to mirror the real exam's format and topics, with detailed explanations for every answer so you understand the reasoning — not just memorize responses.
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