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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 |
| Related Certifications: | JNCIA-DC (Data Center, Associate) JNCIP-DC (Data Center, Professional) JNCIE-DC (Data Center, Expert) |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 65 |
| Exam Price: | $150 USD |
| Exam Duration: | 90 minutes |
| Passing Score: | 70% |
| Exam Format: | Multi-Response, Multiple Choice |
| Recommended Training: | Juniper Data Center Architectures Juniper Apstra Essentials |
| 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 # 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
Multilenancy for applications is achieved by creating virtual networks (VNs) within which construct?
Answer: A
Explanation:
A routing zone is an L3 domain, the unit of tenancy in multi-tenant networks. You create routing zones for tenants to isolate their IP traffic from one another, thus enabling tenants to re-use IP subnets. In addition to being in its own VRF, each routing zone can be assigned its own DHCP relay server and external system connections. You can create one or more virtual networks within a routing zone, which means a tenant can stretch its L2 applications across multiple racks within its routing zone.
NEW QUESTION # 91
Which two statements are correct about a Juniper Apstra server? (Choose two.)
Answer: B,C
Explanation:
Apstra manages devices using IP connectivity over the management network, which is a Layer 3 relationship. Whether you are using on-box agents or off-box agents, the controller (or cluster) communicates with the fabric devices using IP reachability (for example, to exchange management traffic, retrieve discovery state, collect telemetry, and push configuration). This is why Layer 2 adjacency is not required between the Apstra server and the managed switches; the essential requirement is routable IP connectivity and appropriate access (credentials/agent connectivity) to the device management interfaces.
From a platform perspective, Apstra does not need a dedicated physical NIC per managed device. Instead, the server/VM requires connectivity to the management network through a single network adapter, and that interface can route to all managed devices. In a typical data center deployment, the Apstra controller VM sits on a management VLAN/subnet and reaches the entire fabric through routed management. This scales operationally: adding devices does not require adding additional server NICs; it only requires IP reachability and capacity planning for telemetry and agent workloads. Thus, the correct statements are that Apstra uses Layer 3 to communicate with managed devices and that it requires a single network adapter for that management connectivity model.
NEW QUESTION # 92
You are allowed to assign tags for which three objects? (Choose three.)
Answer: A,D,E
Explanation:
In Apstra, tags are an intent-level metadata mechanism used to classify objects and drive automation and reuse. Within a data center blueprint, Apstra supports tagging multiple blueprint objects so operators can apply configuration or policy logic conditionally (for example, applying a connectivity template or a configlet based on a tag match). In this scenario, three valid taggable objects are virtual networks, interfaces, and generic systems.
Virtual network tagging is supported directly from the blueprint's virtual network table, enabling you to label virtual networks (such as "finance," "pci," or "dev") and then reference those tags elsewhere in blueprint operations and policy application. Interface tagging is also explicitly supported in the blueprint, allowing you to assign tags to switch interfaces and use those tags to control how templates, assignments, or other intent-driven operations apply to those ports. Finally, generic systems (which are modeled endpoint systems such as servers or external routers represented as "systems" in the blueprint) can be tagged so that downstream intent logic can distinguish system roles and apply the correct operations consistently across expansions and changes.
By contrast, property sets are structured data objects used for variable substitution and probe/configlet parameterization, not a primary target for operational tagging in the blueprint UI; and device profiles are catalog artifacts describing hardware/NOS compatibility rather than blueprint objects typically tagged for intent application.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic-map/tag-interface-add-remove-datacenter.html
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/task/tag-virtual-network-update.html
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/topic-map/tag-system-add-remove-freeform.html
NEW QUESTION # 93
You are building a blueprint using Juniper Apstra and must change the cable map to match the physical environment.
Where in the blueprint UI is this task accomplished?
Answer: A
Explanation:
To modify the cable map in Juniper Apstra so it matches the actual physical environment, you must do it in the Staged โ Physical โ Links section of the blueprint UI. Changes made in the staged view allow adjustments before committing them to the active fabric.
NEW QUESTION # 94
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