JN0-481 Exam dumps PDF | Exam-Dumps.net (Page: 1)

QUESTION: 1

What is the primary reason for creating an Apstra worker node?

To support more than one blueprint
To create a space for storing event logs
To run Zero Touch Provisioning (ZTP)
To offload off-box agents and Intent-Based Analytics (IBA)

Answer(s): D

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.

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QUESTION: 2

Which Root Cause Identifier is currently supported in Juniper Apstra software?

Virtual network
Connectivity
ESI imbalance
BGP

Answer(s): B

Explanation:

In Juniper Apstra 5.1, Root Cause Identification (RCI) is implemented with a currently supported model focused on connectivity. Practically, this means RCI is designed to take telemetry and state learned from the fabric (for example, interface operational status, LLDP neighbor information, and routing session status) and correlate those signals to determine the most likely underlying cause of a connectivity-impacting event. Within an EVPN-VXLAN IP fabric, many operational symptoms can appear similar at the service layer (endpoints cannot reach each other, routes disappear, overlays degrade), but RCI narrows the problem by correlating evidence across the underlay and control plane.

The "connectivity" RCI model targets common failure scenarios that directly break device-to-device reachability, such as a broken link, a miscabled link (wrong LLDP neighbors), or an operator-disabled interface. These conditions often cascade into higher-level symptoms, including BGP sessions dropping over affected links. With Junos v24.4-based leaf-spine fabrics, maintaining stable underlay connectivity is foundational for EVPN signaling and VXLAN forwarding; therefore, Apstra's connectivity-focused RCI helps operators rapidly isolate whether the primary fault lies in physical adjacency, cabling/neighbor correctness, or administrative shutdown--reducing mean time to repair by pointing to the most probable root cause rather than only listing alarms.

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QUESTION: 3

You are attempting to attach the server connected to the my_border_001_leaf1 node's ge-0/0/5 interface to the finance-app virtual network.

Referring to the exhibit, what would you do to solve the problem?

You can add a generic system to the physical topology.
You can set the generic system to the deploy mode.
You can allocate an IP pool resource to the virtual network.
You can assign the finance-app virtual network to the my_border_001_leaf1 node.

Answer(s): A

Explanation:

In Apstra 5.1, servers are modeled as Generic Systems and must be represented in the blueprint topology so that Apstra can bind an endpoint (the server) to a specific switch interface and then apply the intended connectivity template / virtual network attachment. In the exhibit, the interface ge-0/0/5 on my_border_001_leaf1 is shown as missing from the assignment workflow, which indicates that Apstra does not currently have an endpoint object connected to that port in the blueprint's staged physical topology (or that the port is not presented as an eligible connectivity point for server attachment).

The correct remediation is to add a Generic System connected to my_border_001_leaf1 ge-0/0/5 in Staged > Physical > Topology, thereby creating a modeled server link on that interface. Once the Generic System exists and the interface is a recognized server-facing connectivity point, you can assign the Tagged VXLAN "finance-app" connectivity template (or the VN assignment action driven by that template) to the server-facing interface and then commit the staged changes.

Changing "deploy mode" may affect whether Apstra actively configures a generic system-facing link, but it does not solve a missing interface in the topology model. Likewise, allocating an IP pool is unrelated to making the port available for attachment, and assigning the VN to the switch node is not how server interfaces are attached in this workflow.

Verified Juniper sources (URLs):

https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic- map/internal-generic-system-create.html https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/topic- map/virtual-network-assignment-update.html https://cloudlabs.apstra.com/labguide/Cloudlabs/6.0.0/test-drive-guide/lab1-junos-11_adding- gs.html

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QUESTION: 4

You are using Juniper Apstra to create your DC fabric. The fabric requires the use of configlets and requires a property set, which you call "test." While creating the property set, you encounter an error message.

Referring to the exhibit, how would you correct the error?

Use the Builder option for input type of YAML.
Remove the trailing blank lines.
Change to JSON and click Create.
Use valid YAML syntax of key: value.

Answer(s): D

Explanation:

In Apstra 5.1, a property set is a structured data object used to parameterize configlets (config templates). The key point is that Apstra expects the property set "values" to be a dictionary/map so that the configlet can reference variables by name (for example, {{ NTP_SRV1 }} or nested keys). The exhibit shows a server-side validation error indicating that values_yaml "should be dict," which occurs when the YAML content is entered as a single scalar string (such as try_ksh) instead of a key- value mapping.

To correct this, rewrite the YAML using valid key: value syntax so the top-level structure is a dictionary. For example, a minimal valid property set would look like role: try_ksh (or any meaningful key name aligned to the variables your configlet expects). If multiple variables are needed, add additional keys, and if your configlet uses nested objects, represent them as nested YAML dictionaries. This correction aligns the property set with Apstra's intent-based model: values are stored as named properties and then rendered deterministically into device configuration. This is independent of Junos v24.4 specifics; Junos becomes relevant when the rendered configlet content is applied to devices, but the property set itself must first validate as a dictionary for Apstra to render the template correctly.

Verified Juniper sources (URLs):

https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user- guide/topics/task/property-set-datacenter-design-create.html https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user- guide/topics/concept/property-set-datacenter-design.html https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user- guide/topics/ref/property-sets-api.html

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QUESTION: 5

You want to route between tenants in a multitenant environment in Juniper Apstr

What are two ways to accomplish this task? (Choose two.)
Route between VRFs on a VTEP-enabled device.
Use an external device to route between tenants.
Use iBGP to route within the same AS number.
Use virtual networks to route between VRFs.

Answer(s): A,B

Explanation:

In Apstra 5.1 multitenancy, tenants are modeled as routing zones, and each routing zone maps to a distinct VRF to provide strict Layer 3 isolation. Because each tenant's VRF is separate, "routing between tenants" is effectively inter-VRF routing. Apstra's routing-zone behavior emphasizes that inter-tenant routing is achieved via external systems: you connect each tenant/routing zone to an external router or firewall (often attached to border leafs), and that external device performs the policy-controlled inter-VRF routing between tenants. This approach is the most common because it centralizes security and compliance controls (stateful inspection, zone policies, NAT, logging) on the firewall/router while keeping the fabric clean and consistent.

A second method is to perform inter-VRF routing on a VTEP-capable border leaf that terminates the tenant VRFs. In EVPN-VXLAN designs, border leafs are frequently the demarcation where tenant VRFs connect to outside domains; when the same border leaf hosts multiple tenant VRFs and is designed to provide L3 services for them, it can act as the routing point between VRFs (subject to your design and security requirements). Junos v24.4 supports VRFs and policy constructs required for controlled route exchange and forwarding behavior, but Apstra's intent model still expects routing-zone isolation by default--so any inter-tenant connectivity should be explicitly designed and governed, typically at the border.

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QUESTION: 6

Which element of an intent-based analytics (IBA) probe is used to specify the database objects to which the probe will apply?

Reference design schema
Graph query
Database nodes
Node-edge relationship

Answer(s): B

Explanation:

In Apstra 5.1, Intent-Based Analytics (IBA) is built on Apstra's graph-based source of truth, where devices, interfaces, links, routing constructs, and services are represented as nodes with relationships. An IBA probe is effectively a processing pipeline (a directed acyclic graph of stages and processors) that ingests telemetry and then performs calculations, aggregations, and anomaly detection. To make any of that work, the probe must first determine which specific objects in the graph--for example, which leaf switches, which uplinks, which BGP sessions, or which interface counters--should be included in the analysis.

The probe element that selects those objects is the graph query. A graph query is evaluated against Apstra's graph database to return a set of matching nodes/relationships; those query results then become the scope for ingestion and subsequent processing. In other words, the graph query defines "apply this probe to these devices/interfaces/sessions," and it also provides the context used to bind telemetry identities (key-value pairs describing the metric source) to the correct logical objects in the blueprint. This is why Apstra documentation describes early probe processors producing outputs whose cardinality aligns with the number of results returned by the specified graph query(s). Without a graph query, the probe would not have a deterministic, intent-aligned target set for analytics, and the same probe definition could not be reliably reused across fabrics or blueprints.

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QUESTION: 7

What are two types of policies that Juniper Apstra uses to push to switches using Security Policies? (Choose two.)

Filter-based forwarding (ChooseFBF)
Firewall filters
Policy-based routing (ChoosePBR)
Access control lists (ChooseACLs)

Answer(s): B,D

Explanation:

Apstra 5.1 Security Policies are intended to enforce permit/deny controls for traffic between defined endpoints such as routing zones, virtual networks, and IP endpoints. Apstra expresses this security intent in an implementation-independent way, then renders and deploys the equivalent enforcement configuration onto the appropriate devices and interfaces. In Apstra terminology, the outcome is an ACL applied at enforcement points, such as virtual network interfaces (SVIs/IRBs) for east-west controls and border leaf interfaces for external-to-internal controls.

Therefore, the two correct policy types in this context are access control lists (ACLs) and firewall filters. "ACL" is the abstract policy object Apstra compiles and applies, while on Junos v24.4 the concrete enforcement mechanism for stateless packet filtering on interfaces is typically implemented as a firewall filter. Apstra automatically places these rendered ACLs/filters where needed: when you add VXLAN endpoints (such as expanding a rack/leaf in a VN), the ACL is placed on the corresponding VN interface; when you add external connectivity points, relevant ACLs are placed on the border leaf enforcement points. This automation ensures that security intent remains consistent as the fabric scales or changes, reducing the risk of manual rule drift. In contrast, filter-based forwarding / policy- based routing changes forwarding decisions rather than expressing permit/deny security intent, and is not the primary mechanism used by Apstra Security Policies for reachability control.

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QUESTION: 8

In Juniper Apstra, which statement about resources is correct?

User-defined resources are supported.
The scope of a pool is limited to a single blueprint.
The scope of a pool can be defined as global or blueprint specific.
Only the default resources are supported globally.

Answer(s): C

Explanation:

In Apstra 5.1, "resources" are the identifier values consumed by the fabric design and rendered into device configuration--examples include ASNs, IP addresses, VNIs, VLAN-related identifiers (where applicable), and similar allocation-driven values. These values are provided through resource pools, which are the authoritative containers Apstra draws from when assigning resources to blueprint roles (for example, leaf ASNs, spine ASNs, loopbacks, point-to-point subnets, and VNI ranges). A key architectural feature is that resource pools are not confined to one blueprint. Apstra supports pools with different scopes to match operational needs: some pools are managed centrally and reused across multiple blueprints, while other pools are created and used within the context of a specific blueprint when you want strict separation and lifecycle alignment with that blueprint.

This is why the correct statement is that a pool's scope can be global or blueprint-specific. Global pools are appropriate when you want consistent allocation policy across fabrics (for example, enterprise-wide ASN ranges). Blueprint-specific pools are appropriate when you want per-fabric independence or when allocations are generated dynamically within the blueprint. This scope behavior is independent of Junos v24.4; Junos receives the final rendered values, but the pool scoping and allocation control are Apstra design-time constructs that ensure deterministic, conflict- free assignments at scale.

Verified Juniper sources (URLs):

https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user- guide/topics/concept/resources.html https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user- guide/topics/concept/freeform-resource-management.html https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user- guide/topics/ref/resource-pools-api.html

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Juniper JN0-481 Exam (page: 1)
Juniper Data Center, Specialist (JNCIS-DC)
Updated on: 31-Mar-2026

Access free JN0-481 actual exam questions, answers, explanations and user discussions.

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Juniper JN0-481 Exam (page: 1) Juniper Data Center, Specialist (JNCIS-DC) Updated on: 31-Mar-2026

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Juniper JN0-481 Exam (page: 1)
Juniper Data Center, Specialist (JNCIS-DC)
Updated on: 31-Mar-2026