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| Section | Objectives |
|---|---|
| Operations and Troubleshooting | - Troubleshooting routing and switching issues - Monitoring and verifying EVPN-VXLAN fabrics |
| Automation and Programmability | - Network configuration consistency and automation concepts - Junos automation basics (scripts, commit scripts) |
| EVPN-VXLAN Technologies | - VXLAN data plane encapsulation - EVPN Type 2 and Type 5 routes - EVPN control plane fundamentals |
| Data Center Architecture Fundamentals | - Spine-leaf (Clos) architecture design - Layer 2 and Layer 3 data center fabric concepts - Redundancy and high availability principles |
| Data Center Routing Protocols | - Underlay vs overlay network design - BGP in EVPN-based fabrics - OSPF and IS-IS in data center environments |
| Junos Data Center Switching | - QFX switch configuration and operation - Spanning Tree and alternatives in DC designs - VLANs, trunking, and bridging concepts |
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NEW QUESTION # 66
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: A
NEW QUESTION # 67
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?
Answer: C
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 # 68
Which two statements are correct about Juniper Apstra reference designs? (Choose two.)
Answer: A,D
Explanation:
Apstra 5.1 provides multiple reference designs that define how intent is modeled and how configuration is produced. In the Freeform reference design, the network designer is responsible for creating and validating the device configurations using constructs such as device contexts, property sets, and config templates. Because configuration is authored rather than generated from a fixed data-center abstraction set, Freeform inherently requires practical knowledge of the device's configuration model and operational behavior-on Juniper platforms, that means being comfortable with Junos-style configuration and show/verification workflows. This makes statement A correct.
Freeform in Apstra 5.1 is also limited to Juniper devices (Junos and Junos Evolved families). In other words, Freeform blueprints do not provide multi-vendor device onboarding and deployment in that reference design at this software level. That makes statement D correct as written in the question's choices.
By contrast, the data center reference design in Apstra 5.1 is not limited to Junos-only device families; Apstra qualifies multiple NOS families for data center operation via device profiles and packages, and it renders intent accordingly. Therefore statement B is not correct. Finally, while CLI knowledge is always useful for troubleshooting, the data center reference design does not fundamentally require an operator to hand-author device CLI to deploy a standards-based EVPN-VXLAN fabric; that's one of the core benefits of the intent-based data center reference design.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/concept/freeform.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-freeform-4.2.1/apstra-freeform-guide/topics/concept/freeform-overview-and-design.html
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/task/device-profile-import-freeform.html
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic-map/devices-qualified.html
NEW QUESTION # 69
You are performing an upgrade to your switches in your network. You want to ensure that the upgrade can be performed without interrupting traffic. In the Juniper Apstra UI, which deploy mode should be used to accomplish this task?
Answer: C
Explanation:
In Apstra, Deploy Mode = Drain is the operational mechanism used to gracefully remove a switch from active forwarding before performing maintenance such as an OS upgrade. Drain mode is specifically intended to drain traffic while preserving fabric stability, so that maintenance can be executed with minimal to no application impact, provided the fabric design has sufficient redundancy (for example, ECMP in the underlay and dual-homing/ESI for server attachments). In an EVPN-VXLAN IP fabric, taking a leaf or spine abruptly out of service can cause transient loss of reachability as underlay adjacencies reconverge and the overlay recalculates paths. By placing the device into Drain, Apstra adjusts intent so that traffic is shifted away from the device as much as possible, reducing dependency on it before the upgrade begins.
This is different from Undeploy, which removes Apstra-rendered configuration and is generally used for decommissioning; if a device is carrying traffic, Apstra guidance is to drain first. Ready is a pre-deploy state used in lifecycle workflows, not a maintenance traffic-shifting mode. Deploy keeps the device fully participating. Therefore, for a maintenance window where the goal is "upgrade with minimal interruption," the correct mode is Drain, then perform the Junos v24.4 upgrade, and finally return the device to Deploy.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-drain-mode/apstra-drain-mode.pdf
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-user-guide/topics/topic-map/deploy-mode-update-datacenter.html
https://www.juniper.net/documentation/us/en/software/apstra6.0/apstra-user-guide/topics/topic-map/device-config-lifecycle.html
NEW QUESTION # 70
Off-box agents are consuming too much CPU and memory on your Juniper Apstra controller. In this scenario, how would you solve this problem?
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 # 71
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