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| Section | Objectives |
|---|---|
| Data Center Routing Protocols | - Underlay vs overlay network design - OSPF and IS-IS in data center environments - BGP in EVPN-based fabrics |
| Operations and Troubleshooting | - Monitoring and verifying EVPN-VXLAN fabrics - Troubleshooting routing and switching issues |
| EVPN-VXLAN Technologies | - VXLAN data plane encapsulation - EVPN control plane fundamentals - EVPN Type 2 and Type 5 routes |
| Automation and Programmability | - Junos automation basics (scripts, commit scripts) - Network configuration consistency and automation concepts |
| Junos Data Center Switching | - Spanning Tree and alternatives in DC designs - VLANs, trunking, and bridging concepts - QFX switch configuration and operation |
| Data Center Architecture Fundamentals | - Layer 2 and Layer 3 data center fabric concepts - Redundancy and high availability principles - Spine-leaf (Clos) architecture design |
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NEW QUESTION # 44
Which Juniper Apstra object defines the overall fabric design, including spine count, rack types, and their connectivity, before a blueprint is created?
Answer: A
Explanation:
A Template in Juniper Apstra defines the overall logical design of the fabric, combining Rack Types with information such as the number of spine devices and the fabric topology (for example, a 3-stage or 5-stage Clos). Once a Template is defined, it can be used to instantiate a Blueprint, which becomes the active, deployable representation of the design.
NEW QUESTION # 45
What are two types of virtual networks defined inside Juniper Apstra software? (Choose two.)
Answer: B,C
Explanation:
In Apstra 5.1, a Virtual Network (VN) is Apstra's abstraction for a Layer 2 forwarding domain that groups endpoints into a logical segment across the fabric. Apstra defines virtual networks as being constructed using either VLANs or VXLANs. A VLAN-based VN represents a Layer 2 domain identified by a VLAN ID and is typically used where you want traditional VLAN semantics (often in smaller environments, migration scenarios, or designs where an overlay is not required). A VXLAN-based VN represents the same Layer 2 intent but uses a VXLAN VNI for scalable overlay segmentation, which is the common approach in EVPN-VXLAN data center fabrics.
In an IP fabric architecture, VXLAN provides encapsulation to carry tenant segments over the routed underlay, while EVPN provides the control-plane signaling for MAC/IP reachability. Junos v24.4 leaf devices act as VTEPs, mapping local VLANs/bridge-domains to VNIs and participating in EVPN for advertisement and convergence. Apstra's VN construct allows you to create the segment once (as VLAN or VXLAN type), then consistently attach it to racks, ports, and endpoints through intent-driven workflows (such as connectivity templates and virtual network assignments).
"L2 VPN" and "L3 VPN" are service provider terms and are not the VN "types" in Apstra's data center reference design. In Apstra, tenant L3 separation is modeled by routing zones (VRFs), while the VN itself is specifically either VLAN-based or VXLAN-based.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/concept/virtual-networks.html
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/topic-map/virtual-network-create.html
NEW QUESTION # 46
Juniper Apstra provides five different predefined user roles. Given this information, what is the main difference between the administrator and the user role?
Answer: B
Explanation:
Apstra role-based access control separates fabric operations from identity and authorization administration. The administrator role includes full permissions, including the ability to manage users and roles (for example, creating users, assigning permissions, and creating/cloning/editing custom roles where allowed). This enables administrators to govern who can access the system and what they are permitted to change across all blueprints and system settings.
The user role, in contrast, is designed for day-to-day fabric work: viewing and editing supported blueprint elements and operational objects within the scope permitted by the role, but not administering other users' access or modifying the role structure itself. In other words, a user can work on the network intent and operations, but cannot elevate privileges, change other users' roles, or otherwise manage user/role administration unless explicitly granted additional permissions through custom roles.
That makes option C the correct statement: the user role cannot make changes to other user types (that is, it lacks the permissions needed to administer identities/roles). Options A, B, and D do not reflect Apstra's RBAC model: roles are not primarily constrained "per blueprint" in that way, and users are not intended to modify other roles-those are administrator-level capabilities.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra6.0/apstra-user-guide/topics/concept/user-role-management.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-user-guide/topics/concept/user-role-management.html
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/concept/user-role-management.html
NEW QUESTION # 47
Which element of an intent-based analytics (IBA) probe is used to specify the database objects to which the probe will apply?
Answer: C
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.
NEW QUESTION # 48
Referring to the exhibit, how many rack types are used in the staged blueprint?
Answer: A
Explanation:
Referring to the exhibit, the image shows the Racks table under the Staged menu in the Juniper Apstra UI. The Racks table displays the details of the racks that are used in the blueprint, such as the name, rack type, and date. The rack type is a resource that defines the type and number of leaf devices, access switches, and/or generic systems that are used in rack builds. The image shows seven racks in the table, but only two rack types: BorderLeaf and ServerRack.
NEW QUESTION # 49
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