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Juniper JN0-481 Exam Syllabus Topics:
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NEW QUESTION # 30
You are adding a new tenant to your Juniper Apstra-managed fabric and need to add a VXLAN type virtual network for the new tenant.
Which two components must be completed to accomplish this task? (Choose two.)
- A. A VNI must be manually specified.
- B. The virtual network name must be specified.
- C. The routing zone must be selected.
- D. Either IPv4 or IPv6 connectivity must be enabled.
Answer: B,C
Explanation:
The routing zone must be selected - Every virtual network in Juniper Apstra must be associated with a routing zone (VRF) to define its Layer 3 domain.
The virtual network name must be specified - A unique name is required to identify the virtual network being created.
NEW QUESTION # 31
You have a configuration deviation in the Juniper Apstra dashboard. What does this anomaly indicate in this scenario?
- A. A device is ready to be configured by the system.
- B. A device cannot support a configuration command sent by the system.
- C. A device's configuration has been updated by the server.
- D. A device's configuration has been changed using a method outside of Apstra.
Answer: D
Explanation:
A configuration deviation (also called a configuration anomaly) in Apstra indicates that the device's running configuration differs from Apstra's intended (golden) configuration for that node. In day-to-day operations, this most commonly occurs when an operator makes a change outside of Apstra's control, such as entering commands directly on the device CLI (for example, on a Junos v24.4 switch), using another automation system, or applying an out-of-band configuration method.
Apstra continuously compares the device's operational configuration against what it expects based on blueprint intent. When it detects drift, it raises a deviation anomaly so operators can decide how to restore compliance. Typical remediations are either (1) remove/revert the out-of-band change so the device matches intent again, or (2) explicitly acknowledge the change in Apstra (for example, via an accept/suppress workflow, depending on the exact UI action and version), so the deviation is no longer treated as unexpected.
While it is also possible for a deviation to be triggered by a device not accepting a rendered command (capability mismatch), the question asks what the anomaly indicates in this scenario; the primary meaning of "configuration deviation" is configuration changed outside of Apstra and therefore the network is no longer aligned with the intended state. That corresponds to option C.
NEW QUESTION # 32
Multilenancy for applications is achieved by creating virtual networks (VNs) within which construct?
- A. connectivity template
- B. routing zone
- C. security policy
- D. routing table
Answer: B
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 # 33
You have a virtual network that needs controlled access to other virtual networks in the same routing zone. Using the Juniper Apstra Ul. which feature would be used to accomplish this task?
- A. interface policy
- B. routing policy
- C. anti-affinity policy
- D. security policy
Answer: D
Explanation:
A security policy is the feature that would be used to accomplish the task of controlling access to other virtual networks in the same routing zone using the Juniper Apstra UI. A security policy allows you to define rules that specify which traffic is allowed or denied between different virtual networks, IP endpoints, or routing zones. A security policy can be applied to one or more virtual networks in the same routing zone, and it can use various criteria to match the traffic, such as source and destination IP addresses, protocols, ports, or tags. A security policy can also support DHCP relay, which enables the forwarding of DHCP requests from one virtual network to another. The other options are incorrect because:
A . interface policy is wrong because an interface policy is a feature that allows you to configure the interface parameters for the devices in a blueprint, such as interface names, speeds, types, or descriptions. An interface policy does not affect the access control between different virtual networks in the same routing zone.
B . anti-affinity policy is wrong because an anti-affinity policy is a feature that allows you to prevent certain devices or logical devices from being placed in the same rack or leaf pair in a blueprint. An anti-affinity policy is used to enhance the availability and redundancy of the network, not to control the access between different virtual networks in the same routing zone.
C . routing policy is wrong because a routing policy is a feature that allows you to configure the routing parameters for the devices in a blueprint, such as routing protocols, autonomous system numbers, route filters, or route maps. A routing policy does not affect the access control between different virtual networks in the same routing zone, unless the routing policy is used to filter or modify the routes exchanged between different routing zones. Reference:
Security Policy
Interface Policy
Anti-Affinity Policy
Routing Policy
NEW QUESTION # 34
Which two protocols can be used to advertise EVPN routes? (Choose two.)
- A. MP-IBGP
- B. IS-IS
- C. MP-EBGP
- D. OSPF
Answer: A,C
NEW QUESTION # 35
You have designed your fabric in Juniper Apstra prior to deploying the network devices. Which Apstra element in the Staged tab would be used to assist the team that is installing and cabling the devices?
- A. Links table
- B. Connectivity Templates
- C. Virtual Networks table
- D. Managed Devices list
Answer: A
Explanation:
The Links table in the Staged tab shows the physical connections between the devices in the fabric. It provides information such as the source and destination device names, hostnames, serial numbers, roles, interfaces, and link status. The Links table can be used to assist the team that is installing and cabling the devices by verifying that the devices are connected correctly and that the links are operational. The Links table can also be used to troubleshoot any connectivity issues that may arise during the installation process.
NEW QUESTION # 36
Which element of an intent-based analytics (IBA) probe is used to specify the database objects to which the probe will apply?
- A. database nodes
- B. node-edge relationship
- C. graph query
- D. reference design schema
Answer: C
Explanation:
In Juniper Apstra's Intent-Based Analytics (IBA), a graph query defines the database objects and relationships that the probe will evaluate. This query specifies the exact scope of data (such as nodes, links, or metrics) to which the probe applies, enabling precise monitoring and validation against the intended state.
NEW QUESTION # 37
Off-box agents are consuming too much CPU and memory on your Juniper Apstra controller. In this scenario, how would you solve this problem?
- A. Use on-box agents instead of off-box agents.
- B. Create a worker VM to offload off-box agents from the Apstra controller VM.
- C. Add more CPU and memory to the Apstra controller VM.
- D. Modify the agent profile to consume less resources.
Answer: B
Explanation:
In Apstra 5.1, off-box agents and analytics services are delivered as containerized workloads that consume CPU and memory within the Apstra cluster. When these workloads are concentrated on the controller node, the controller can become resource-constrained, impacting overall responsiveness and scaling limits. The supported architectural solution is to add a worker node (worker VM) and allow Apstra to place offbox (and, if applicable, iba) containers on that worker. This increases cluster capacity and shifts runtime load away from the controller, which should remain focused on core control-plane and management functions.
Juniper's sizing guidance also treats worker nodes as the scalable unit for off-box agent growth: each VM node (controller or worker) supports a bounded number of off-box agents, and when one VM is insufficient, the prescribed approach is to increase capacity by adding worker nodes to the Apstra VM cluster. This method scales horizontally and avoids overloading the controller with operational containers.
While increasing CPU/memory on the controller might help temporarily, the documented design pattern for sustained growth is to distribute the off-box workloads across worker nodes. Switching to on-box agents is a different operational model and not the direct remediation for controller resource pressure in an off-box deployment.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-install-upgrade/topics/ref/apstra-server-resources.html
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/topic-map/apstra-cluster-nodes.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-user-guide/topics/topic-map/apstra-cluster-nodes.html
NEW QUESTION # 38
A member of your organization made changes to a predefined interface map using Juniper Apstra.
Which two statements are correct in this scenario? (Choose two.)
- A. Changes to interface maps in the global catalog will raise anomalies that may need to be addressed at the next commit.
- B. Any changes made to predefined interface maps are discarded when Apstra is upgraded.
- C. Changes made to predefined interface maps will not have an impact on the Apstra software.
- D. Changes to interface maps in the global catalog do not affect interface maps that have already been imported into blueprint catalogs
Answer: B,D
Explanation:
According to the Juniper documentation1, an interface map is a configuration template that maps interfaces between logical devices and physical hardware devices (represented with device profiles) while adhering to vendor specifications. An interface map can be either predefined or custom. A predefined interface map is one that ships with Apstra software and supports most qualified Juniper devices. A custom interface map is one that is created by the user to meet specific requirements. An interface map can be stored in either the global catalog or the blueprint catalog. The global catalog contains all the interface maps that are available for use in any blueprint. The blueprint catalog contains the interface maps that are imported from the global catalog and used in a specific blueprint.
When a member of your organization makes changes to a predefined interface map, the following statements are correct:
Changes to interface maps in the global catalog do not affect interface maps that have already been imported into blueprint catalogs. This means that the existing blueprints that use the original version of the interface map will not be impacted by the changes. However, if you want to use the updated version of the interface map in a new or existing blueprint, you need to import it again from the global catalog.
Any changes made to predefined interface maps are discarded when Apstra is upgraded. This means that the changes will not be preserved across different versions of Apstra software. If you want to retain a customized interface map through Apstra upgrades, you need to clone the predefined interface map, give it a unique name, and customize it instead of changing the predefined one directly.
Therefore, the correct answer is A and B. Changes to interface maps in the global catalog do not affect interface maps that have already been imported into blueprint catalogs and any changes made to predefined interface maps are discarded when Apstra is upgraded. Reference: Edit Interface Map | Apstra 4.2 | Juniper Networks
NEW QUESTION # 39
What are two types of policies that Juniper Apstra uses to push to switches using Security Policies? (Choose two.)
- A. Firewall filters
- B. Policy-based routing (ChoosePBR)
- C. Filter-based forwarding (ChooseFBF)
- D. Access control lists (ChooseACLs)
Answer: A,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.
NEW QUESTION # 40
Which statement correctly describes the purpose of the Apstra "Time Voyager" feature?
- A. It automatically upgrades device firmware on a schedule.
- B. It allows administrators to schedule future configuration changes.
- C. It predicts future traffic patterns using machine learning.
- D. It provides the ability to view and compare historical states of the blueprint and roll back to a previous configuration.
Answer: D
NEW QUESTION # 41
In the case of IP Clos data center five-stage fabric design, what are two rotes of the super spines? (Choose two.)
- A. Super spines connect to all spine devices within the five-stage architecture.
- B. Super spines are always connected to an external data center gateway.
- C. Super spines are used to interconnect two different data center pods.
- D. Super spines are used to connect leaf nodes within a data center pod.
Answer: A,C
Explanation:
In the case of IP Clos data center five-stage fabric design, the super spines are the devices that provide the highest level of aggregation in the network. They have two main roles:
Super spines are used to interconnect two different data center pods. A pod is a cluster of leaf and spine devices that form a 3-stage Clos topology. A 5-stage Clos topology consists of multiple pods that are connected by the super spines. This allows for scaling the network to support more devices and bandwidth.
Super spines connect to all spine devices within the five-stage architecture. The spine devices are the devices that provide the second level of aggregation in the network. They connect to the leaf devices, which are the devices that provide access to the end hosts. The super spines connect to all the spine devices in the network, regardless of which pod they belong to. This provides any-to-any connectivity between the pods and enables optimal routing and load balancing.
NEW QUESTION # 42
You are allowed to assign tags for which three objects? (Choose three.)
- A. generic systems
- B. property sets
- C. virtual networks
- D. device profiles
- E. interfaces
Answer: A,C,E
Explanation:
In Juniper Apstra, tags can be assigned to specific objects to make searching, filtering, and organizing easier. The supported objects include:
- Virtual networks
- Interfaces
- Generic systems
NEW QUESTION # 43
You are asked to deploy a collapsed fabric architecture. Which two statements are correct about this deployment? (Choose two.)
- A. Leaf devices are full-mesh connected.
- B. All EVPN-VXLAN overlay functions are provided by the leaf devices.
- C. Top-of-rack switches are full-mesh connected.
- D. Top-of-rack switches provide VXLAN support.
Answer: A,B
Explanation:
In Apstra, a collapsed fabric (also described as "spineless") consolidates traditional fabric tiers so that the primary fabric devices perform combined roles. Instead of a dedicated spine tier providing transit between leafs, the fabric is formed by leaf devices connected directly to each other using mesh links. This means a collapsed fabric uses a full-mesh topology at the leaf level, replacing the usual leaf-to-spine connections found in a three-stage Clos. Therefore, the statement that leaf devices are full-mesh connected is correct.
Because the collapsed fabric devices serve the fabric roles, they also provide the EVPN-VXLAN overlay functions (VTEP behavior, EVPN control-plane participation, and VXLAN encapsulation/decapsulation) necessary for tenant segmentation and service delivery. Juniper's collapsed fabric validated designs further describe the collapsed fabric switches as serving all fabric roles (including border-leaf behaviors when external connectivity is required), reinforcing that overlay functions reside on these fabric leaf devices.
The remaining statements are not generally true for the collapsed fabric definition. Top-of-rack (access) switches-when present in certain collapsed designs-are not defined by default as full-mesh connected, and VXLAN support is not a requirement for those TOR/access switches unless the specific architecture explicitly uses them as VTEPs. The defining characteristics are the consolidated fabric roles and the leaf-level full-mesh.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/concept/templates.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-user-guide/topics/concept/rack-types.html
https://www.juniper.net/documentation/us/en/software/jvd/jvd-collapsed-dc-fabric-with-apstra/jvd-collapsed-dc-fabric-with-apstra.pdf
NEW QUESTION # 44
You have accessed your deployed blueprint and see the banner shown in the exhibit.
Which two statements are correct in this scenario? (Choose two.)
- A. Devices must be assigned to profiles.
- B. There are anomalies that must be addressed.
- C. There are changes that are not active on the fabric.
- D. Resources must be assigned to devices.
Answer: B,C
Explanation:
The Uncommitted and Staged indicators in the banner show that there are pending configuration changes that have not yet been pushed live to the fabric, meaning not all changes are active.
The red anomaly indicators (seen on Dashboard and Active) confirm that Apstra has detected anomalies in the deployed blueprint that must be addressed.
NEW QUESTION # 45
Which two statements about ESI values are correct for the server connections to the fabric shown in the exhibit? (Choose two.)
- A. A valid ESI value for Server B is 0x00.00.00.00.00.00.00.00.00.00.
- B. A valid ESI value for Server A is 0x00.00.00.00.00.00.00.00.00.00.
- C. A valid ESI value for Server B is 0x00.20.20.20.20.20.20.20.20.20.
- D. A valid ESI value for Server A is 0x00.10.10.10.10.10.10.10.10.10.
Answer: A,D
Explanation:
To answer this question, we need to understand the concept of ESI values in EVPN LAGs. An ESI is a 10-byte value that identifies an Ethernet segment, which is a set of links that connect a multihomed device (such as a server) to one or more PE devices (such as leaf switches) in an EVPN network. The same ESI value must be configured on all the PE devices that connect to the same Ethernet segment. This allows the PE devices to form an EVPN LAG, which supports active-active or active-standby multihoming for the device. The ESI value can be manually configured (type 0) or automatically derived from LACP (type 1) or other methods. In the exhibit, Server A is connected to two leaf switches (QFX 5210) using a LAG with LACP enabled. Server B is connected to three leaf switches (QFX 5120) using a LAG with LACP enabled.
NEW QUESTION # 46
You are assigning managed devices to a blueprint, for a fully functioning IP fabric.
In the Juniper Apstra UI, which mode should you choose for this task?
- A. Not Set
- B. Deploy
- C. Ready
- D. Drain
Answer: B
Explanation:
When assigning managed devices to a blueprint in Juniper Apstra for a fully functioning IP fabric, the correct mode is Deploy. This ensures that the devices are active participants in the fabric, receiving the intended configuration and forwarding traffic as designed.
NEW QUESTION # 47
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