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| Section | Objectives |
|---|---|
| Topic 1: EVPN-VXLAN Technologies | - EVPN Type 2 and Type 5 routes - VXLAN data plane encapsulation - EVPN control plane fundamentals |
| Topic 2: Data Center Architecture Fundamentals | - Spine-leaf (Clos) architecture design - Redundancy and high availability principles - Layer 2 and Layer 3 data center fabric concepts |
| Topic 3: Data Center Routing Protocols | - BGP in EVPN-based fabrics - OSPF and IS-IS in data center environments - Underlay vs overlay network design |
| Topic 4: Operations and Troubleshooting | - Monitoring and verifying EVPN-VXLAN fabrics - Troubleshooting routing and switching issues |
| Topic 5: Junos Data Center Switching | - Spanning Tree and alternatives in DC designs - QFX switch configuration and operation - VLANs, trunking, and bridging concepts |
| Topic 6: Automation and Programmability | - Junos automation basics (scripts, commit scripts) - Network configuration consistency and automation concepts |
>> Certification JN0-481 Test Answers <<
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NEW QUESTION # 25
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:
When off-box agents consume too much CPU and memory on the Juniper Apstra controller, the best solution is to deploy a separate worker VM. The worker VM offloads off-box agent processing from the main Apstra controller VM, ensuring that the controller remains stable and responsive while still supporting large-scale or resource-intensive environments.
NEW QUESTION # 26
How does Apstra use Fabric Device Management to ensure consistency across the network?
Answer: C
NEW QUESTION # 27
Which two telemetry collection methods does Juniper Apstra use to monitor the health of a managed fabric? (Choose two.)
Answer: A,B
Explanation:
Juniper Apstra primarily relies on streaming telemetry and gRPC-based data collection to gather real-time operational state from managed devices. This modern telemetry approach provides more efficient, scalable, and timely data collection than traditional polling methods, enabling Apstra's intent-based analytics and anomaly detection capabilities.
NEW QUESTION # 28
In Juniper Apstra. which three modes are available for devices? (Choose three.)
Answer: B,C,E
Explanation:
Juniper Apstra supports three deploy modes for devices: Deploy, Drain, and Ready. These modes determine the configuration and state of the devices in the data center fabric.
Deploy: This mode applies the full Apstra-rendered configuration to the device, according to the Apstra Reference Design. The device state becomes IS-ACTIVE and the device is ready to carry traffic in the fabric.
Drain: This mode adds a "drain" configuration to the device, which prevents any new traffic from entering the device. The device state becomes IS-READY and the device is prepared for maintenance or decommissioning.
Ready: This mode removes the Apstra-rendered configuration from the device, leaving only the basic configuration such as device hostname, interface descriptions, and port speed/breakout.
The device state becomes IS-READY and the device is not part of the fabric.
NEW QUESTION # 29
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 # 30
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