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NEW QUESTION # 52
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 # 53
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.)
Answer: A,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 # 54
Which two statements about VXLAN VNIs are correct? (Choose two.)
Answer: A,B
Explanation:
VXLAN VNIs are virtual network identifiers that are used to identify and isolate Layer 2 segments in the overlay network. VXLAN VNIs have the following characteristics:
VNIs can have over 16 million unique values. This is because VXLAN VNIs are 24-bit fields that can range from 4096 to 16777214, according to the VXLAN standard. This allows VXLAN to support a large number of Layer 2 segments and tenants in the network. VNIs identify a broadcast domain. This is because VXLAN VNIs are used to group the end hosts that belong to the same Layer 2 segment and can communicate with each other using VXLAN tunnels. The VXLAN tunnels are established using the VTEP information that is distributed by EVPN. The VTEPs are VXLAN tunnel endpoints that perform the VXLAN encapsulation and decapsulation.
The VXLAN tunnels preserve the Layer 2 semantics and support the broadcast, unknown unicast, and multicast traffic within the same VNI.
NEW QUESTION # 55
You are allowed to assign tags for which three objects? (Choose three.)
Answer: A,D,E
Explanation:
In Apstra, tags are an intent-level metadata mechanism used to classify objects and drive automation and reuse. Within a data center blueprint, Apstra supports tagging multiple blueprint objects so operators can apply configuration or policy logic conditionally (for example, applying a connectivity template or a configlet based on a tag match). In this scenario, three valid taggable objects are virtual networks, interfaces, and generic systems.
Virtual network tagging is supported directly from the blueprint's virtual network table, enabling you to label virtual networks (such as "finance," "pci," or "dev") and then reference those tags elsewhere in blueprint operations and policy application. Interface tagging is also explicitly supported in the blueprint, allowing you to assign tags to switch interfaces and use those tags to control how templates, assignments, or other intent-driven operations apply to those ports. Finally, generic systems (which are modeled endpoint systems such as servers or external routers represented as "systems" in the blueprint) can be tagged so that downstream intent logic can distinguish system roles and apply the correct operations consistently across expansions and changes.
By contrast, property sets are structured data objects used for variable substitution and probe/configlet parameterization, not a primary target for operational tagging in the blueprint UI; and device profiles are catalog artifacts describing hardware/NOS compatibility rather than blueprint objects typically tagged for intent application.
Verified Juniper sources (URLs):
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/apstra5.0/apstra-user-guide/topics/task/tag-virtual-network-update.html
https://www.juniper.net/documentation/us/en/software/apstra5.0/apstra-user-guide/topics/topic-map/tag-system-add-remove-freeform.html
NEW QUESTION # 56
What is the role of a Freeform blueprint in Juniper Apstra, as opposed to a Datacenter blueprint?
Answer: D
Explanation:
A Freeform blueprint in Juniper Apstra provides a more flexible and less prescriptive modeling approach, suitable for topologies or use cases that don't conform to the standard Clos-based data center reference design used by the Datacenter blueprint type. Freeform blueprints still benefit from Apstra's configuration rendering, telemetry collection, and anomaly detection capabilities, but with more design freedom.
NEW QUESTION # 57
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