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| Section | Objectives |
|---|---|
| Topic 1: Junos Data Center Switching | - Spanning Tree and alternatives in DC designs - VLANs, trunking, and bridging concepts - QFX switch configuration and operation |
| Topic 2: Automation and Programmability | - Network configuration consistency and automation concepts - Junos automation basics (scripts, commit scripts) |
| Topic 3: Data Center Architecture Fundamentals | - Redundancy and high availability principles - Spine-leaf (Clos) architecture design - Layer 2 and Layer 3 data center fabric concepts |
| Topic 4: Data Center Routing Protocols | - OSPF and IS-IS in data center environments - Underlay vs overlay network design - BGP in EVPN-based fabrics |
| Topic 5: EVPN-VXLAN Technologies | - VXLAN data plane encapsulation - EVPN control plane fundamentals - EVPN Type 2 and Type 5 routes |
| Topic 6: Operations and Troubleshooting | - Troubleshooting routing and switching issues - Monitoring and verifying EVPN-VXLAN fabrics |
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NEW QUESTION # 28
Which statement is correct about an event log?
Answer: D
Explanation:
In Juniper Apstra 5.1, the Event Log is a centralized record used for auditing and operational visibility. It includes audit events (user/system actions) and anomaly-related alerts (events generated when Apstra detects abnormal conditions). In Apstra documentation, anomaly entries are explicitly treated as "Alert" records with high severity, meaning the Event Log is a valid place to review anomaly notifications and their associated details. Therefore, the statement that the Event Log stores alerts for anomalies is correct.
The other options do not match the Event Log function. Viewing a device's configuration is handled in device configuration and blueprint operational views, not as the primary purpose of the Event Log. Export behavior, where supported, is described for formats such as CSV rather than PDF, and exporting dashboards is a separate capability from event logging. Finally, while worker nodes are used to offload operational services (such as off-box agents and IBA components), the Event Log is a platform logging feature exposed through the controller UI/API rather than something described as "running on the worker node" as its defining trait.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic-map/event-log.html
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/topic-map/event-log.html
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic-map/syslog-config.html
NEW QUESTION # 29
You are allowed to assign tags for which three objects? (Choose three.)
Answer: A,C,E
Explanation:
In Juniper Apstra 5.1, tags are a lightweight metadata mechanism used to classify objects and enable conditional automation (for example, driving dynamic configlets or simplifying filtering/searching in the UI). Apstra supports tagging several blueprint-operational objects that commonly participate in day-1/day-2 workflows.
Virtual networks can be tagged so operators can group, search, and apply automation consistently across sets of segments. This is useful in EVPN-VXLAN fabrics where virtual networks represent VLAN- or VXLAN-backed broadcast domains and you may want policies or configlet logic to apply to all "finance" or "pci" segments as a group.
Interfaces can be tagged directly within a blueprint (for example, leaf access ports, uplinks, or specific border-facing ports). Interface tags are often used to drive template-based configuration behavior and to simplify operational actions across many ports without relying on fragile naming conventions.
Generic systems (internal or external) can also be tagged. Apstra documentation explicitly describes using tags to specify roles for internal generic systems, enabling you to differentiate server types or attachment roles and then apply the correct intent (connectivity templates, VN attachments, or policies) in a repeatable way.
By contrast, property sets are structured data objects used for parameterization (YAML/JSON values for templates/probes), and device profiles describe hardware/NOS capabilities; they are not the standard blueprint objects for tag assignment in this scenario.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/task/tag-virtual-network-update.html
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/apstra5.1/apstra-user-guide/topics/topic-map/internal-generic-system-create.html
NEW QUESTION # 30
In a three-stage Clos network, what are important key design aspects of a data center fabric? (Choose two.)
Answer: C,D
Explanation:
A three-stage Clos (leaf-spine) data center fabric separates roles to keep forwarding predictable and scalable. The leaf layer is the attachment point for endpoints, so servers connect to leaf devices. This is where the fabric accepts workload traffic, applies edge policies, and provides tenant/service constructs (for EVPN-VXLAN fabrics, the leafs typically act as VTEPs and host IRB gateways as required). The spine layer provides the non-blocking transit core between leafs using L3 underlay routing and ECMP, but it is not the place where servers attach directly.
For north-south connectivity, a typical three-stage Apstra data center architecture includes border leaf switches. These border devices provide the controlled connection point between the fabric and external networks (Internet/WAN/DCI or upstream services). As a result, fabric traffic enters and exits the border devices, not the spines. This design keeps the spines dedicated to high-speed east-west transit and simplifies operations: external routing policies, security controls, and inter-domain handoffs are concentrated at the border, while the spines remain a uniform L3 transit tier. In Junos v24.4 EVPN-VXLAN deployments, this separation also helps maintain clean overlay boundaries and consistent underlay behavior across the fabric.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/juniper-data-center-assurance/user-guide/topics/concept/dc-network-topology-on-dc-assurance.html
https://www.juniper.net/documentation/us/en/software/jvd/jvd-3-stage-datacenterdesign-with-juniper-apstra/solution_architecture.html
https://www.juniper.net/content/dam/www/assets/white-papers/us/en/design-considerations-for-spine-and-leaf-ip-fabrics.pdf
NEW QUESTION # 31
Within Managed Devices in the Juniper Apstra Ul, you notice that several devices have the OOS-Quarantined status. The devices cannot be added to any blueprint. Which action would solve this problem?
Answer: A
Explanation:
When an agent installation is successful, devices are placed into the Out of Service Quarantined (OOS-QUARANTINED) state using the Juniper Apstra UI. This state means that the device is not yet managed by Apstra and has not been assigned to any blueprint. The device configuration at this point is called Pristine Config. To make the device ready for use in a blueprint, you need to acknowledge the device, which is a manual action that confirms the device identity and ownership. Acknowledging the device changes its status to Out of Service Ready (OOS-READY)12. Reference:
Managing Devices
AOS Device Configuration Lifecycle
NEW QUESTION # 32
You are creating a template using Juniper Apstr
a. In this scenario, what is a rack-based design compared to a pod-based design?
Answer: C
Explanation:
In Apstra 5.1, templates are used to describe the intended structure of a data center fabric. A rack-based template is used to build the common 3-stage Clos model (spines connected to racks containing leaf/top-of-rack switches and endpoints). In this design, you define the spine logical devices, select one or more rack types, specify rack counts, and define the intended connectivity between spines and racks. This directly models a leaf-spine IP fabric typically used for EVPN-VXLAN in modern data centers.
A pod-based template, by contrast, is explicitly used to build 5-stage Clos networks. In Apstra's terminology, a pod-based template is essentially a "template of templates": it combines one or more rack-based templates (each representing a 3-stage pod) and adds an additional superspine layer to interconnect those pods into a larger, scalable fabric. This is the architectural distinction: rack-based describes the leaf-spine pod, while pod-based describes the multi-pod superspine architecture.
For Junos v24.4 EVPN-VXLAN deployments, the difference matters operationally because 5-stage fabrics introduce additional tiers and scaling considerations (for example, superspine connectivity and expanded ECMP domains). Apstra's template hierarchy ensures consistent intent modeling across both 3-stage and 5-stage topologies without requiring operators to manually redesign the fabric logic each time they scale out.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/concept/templates.html
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/task/template-create-pod-based.html
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic-map/5-stage-clos.html
NEW QUESTION # 33
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