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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Juniper Networks Certified Specialist - Data Center (JNCIS-DC) Exam |
| Exam Number: | JN0-481 |
| Available Languages: | English |
| Exam Price: | $150 USD |
| Real Exam Qty: | 65 |
| Exam Format: | Multiple Choice, Multi-Response |
| Exam Duration: | 90 minutes |
| Passing Score: | 70% |
| Related Certifications: | JNCIA-DC (Data Center, Associate) JNCIP-DC (Data Center, Professional) JNCIE-DC (Data Center, Expert) |
| Certificate Validity Period: | 3 years |
| Recommended Training: | Juniper Apstra Essentials Juniper Data Center Architectures |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Juniper JN0-481 Sample Questions |
| Exam Way: | Online proctored or Onsite at Pearson VUE test centers |
| Pre Condition: | Recommended: JNCIA-DC (Data Center, Associate) certification or equivalent knowledge |
| Official Syllabus URL: | https://www.juniper.net/training/certification/tracks/data-center/jncis-dc.html |
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NEW QUESTION # 88
What is the function of an Interface Map in Juniper Apstra?
Answer: A
Explanation:
An Interface Map in Juniper Apstra binds the logical interface roles defined within a Rack Type or Template (such as "leaf1 uplink to spine1") to the actual physical interfaces available on a specific hardware device model. This abstraction allows the same logical design to be reused across different hardware platforms simply by selecting the appropriate interface map for each device.
NEW QUESTION # 89
What is the primary reason for creating an Apstra worker node?
Answer: C
Explanation:
In Apstra 5.1, the worker node's primary purpose is to add scalable runtime capacity to an Apstra cluster by hosting off-box services that would otherwise consume resources on the controller. Specifically, worker nodes run containerized services such as off-box device agents (used to communicate with and manage devices) and Intent-Based Analytics (IBA) components (such as probes and analytics-related services). This design keeps the controller node focused on cluster management and control-plane functions (API handling, cluster-wide state, blueprint control workflows), while shifting resource-intensive operational services to worker nodes.
As your fabric grows-more switches, more telemetry, more devices requiring agent connectivity-CPU and memory demand increases notably, especially when IBA is enabled. Adding worker nodes allows you to scale those container workloads horizontally without redesigning the fabric or reducing analytics coverage. In a Juniper data center built on EVPN-VXLAN with Junos v24.4 leaf-spine roles, this separation helps ensure that Apstra can continuously validate intent, process streaming telemetry, and maintain device communications reliably at scale. Worker nodes therefore exist primarily to offload and scale operational agents and IBA services, improving performance and resilience for larger deployments.
NEW QUESTION # 90
You are using Juniper Apstra to manage your three-stage IP fabric. You have not enabled any IBA probes other than those that are enabled by default. You notice that both the Analytics tab and its child, Anomalies tab, have red indicators associated with them.
In this scenario, which condition is occurring in your network?
Answer: B
NEW QUESTION # 91
In a three-stage Clos network, what are important key design aspects of a data center fabric? (Choose two.)
Answer: C,D
Explanation:
A three-stage Clos (leaf-spine) data center fabric separates roles to keep forwarding predictable and scalable. The leaf layer is the attachment point for endpoints, so servers connect to leaf devices. This is where the fabric accepts workload traffic, applies edge policies, and provides tenant/service constructs (for EVPN-VXLAN fabrics, the leafs typically act as VTEPs and host IRB gateways as required). The spine layer provides the non-blocking transit core between leafs using L3 underlay routing and ECMP, but it is not the place where servers attach directly.
For north-south connectivity, a typical three-stage Apstra data center architecture includes border leaf switches. These border devices provide the controlled connection point between the fabric and external networks (Internet/WAN/DCI or upstream services). As a result, fabric traffic enters and exits the border devices, not the spines. This design keeps the spines dedicated to high-speed east-west transit and simplifies operations: external routing policies, security controls, and inter-domain handoffs are concentrated at the border, while the spines remain a uniform L3 transit tier. In Junos v24.4 EVPN-VXLAN deployments, this separation also helps maintain clean overlay boundaries and consistent underlay behavior across the fabric.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/juniper-data-center-assurance/user-guide/topics/concept/dc-network-topology-on-dc-assurance.html
https://www.juniper.net/documentation/us/en/software/jvd/jvd-3-stage-datacenterdesign-with-juniper-apstra/solution_architecture.html
https://www.juniper.net/content/dam/www/assets/white-papers/us/en/design-considerations-for-spine-and-leaf-ip-fabrics.pdf
NEW QUESTION # 92
Which statement is true when onboarding a Juniper Networks device using a Juniper Apstra ZTP server?
Answer: D
Explanation:
The ztp.Json file on the Apstra ZTP server contains the configuration parameters for each device that is onboarded using ZTP. One of the parameters is the State, which can be one of the following values: init, ready, in_progress, done, error, or disabled. The State indicates the current status of the device in the ZTP process. For example, if the State is ready, it means that the device is ready to be onboarded by the Apstra ZTP server. If the State is done, it means that the device has completed the ZTP process and is managed by the Apstra server. The State can be manually set or changed in the ztp.Json file to control the behavior of the device during ZTP.
NEW QUESTION # 93
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