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| Section | Objectives |
|---|---|
| Topic 1: Automation and Programmability | - Junos automation basics (scripts, commit scripts) - Network configuration consistency and automation concepts |
| Topic 2: EVPN-VXLAN Technologies | - EVPN Type 2 and Type 5 routes - VXLAN data plane encapsulation - EVPN control plane fundamentals |
| 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: Junos Data Center Switching | - Spanning Tree and alternatives in DC designs - QFX switch configuration and operation - VLANs, trunking, and bridging concepts |
| Topic 5: Data Center Architecture Fundamentals | - Redundancy and high availability principles - Layer 2 and Layer 3 data center fabric concepts - Spine-leaf (Clos) architecture design |
| Topic 6: Operations and Troubleshooting | - Monitoring and verifying EVPN-VXLAN fabrics - Troubleshooting routing and switching issues |
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NEW QUESTION # 93
Which attribute enables Juniper Apstra to scale and manage thousands of devices with a single server instance?
Answer: C
Explanation:
The attribute that enables Juniper Apstra to scale and manage thousands of devices with a single server instance is that Apstra is a distributed state system. This means that Apstra uses a graph database to store the network topology and configuration data in a distributed and replicated manner across multiple server nodes. This allows Apstra to handle large-scale networks with high performance, reliability, and availability. Apstra also uses a stateful orchestration engine that ensures the network state is always consistent with the intent of the blueprint, which is the logical representation of the network design and behavior. Apstra can automatically detect and resolve any discrepancies between the desired and actual network state, as well as handle any changes or failures in the network.
NEW QUESTION # 94
Which attribute enables Juniper Apstra to scale and manage thousands of devices with a single server instance?
Answer: C
Explanation:
The attribute that enables Juniper Apstra to scale and manage thousands of devices with a single server instance is that Apstra is a distributed state system. This means that Apstra uses a graph database to store the network topology and configuration data in a distributed and replicated manner across multiple server nodes. This allows Apstra to handle large-scale networks with high performance, reliability, and availability. Apstra also uses a stateful orchestration engine that ensures the network state is always consistent with the intent of the blueprint, which is the logical representation of the network design and behavior. Apstra can automatically detect and resolve any discrepancies between the desired and actual network state, as well as handle any changes or failures in the network. The other options are incorrect because:
A . Apstra is installed as a cloud resource is wrong because Apstra can be installed either as a cloud resource or as an on-premises resource. Apstra is available as a virtual machine image that can be deployed on various hypervisors, such as VMware ESXi, QEMU/KVM, Microsoft Hyper-V, or Oracle VirtualBox. Apstra can also be deployed on public cloud platforms, such as Amazon Web Services (AWS) or Microsoft Azure. However, the installation method does not affect the scalability of Apstra, which is determined by the distributed state system architecture.
B . Apstra is based on NGINX is wrong because Apstra is not based on NGINX, but on Python and Django. NGINX is a web server and reverse proxy that Apstra uses to serve the web user interface and the REST API. However, NGINX is not the core component of Apstra, and it does not affect the scalability of Apstra, which is determined by the distributed state system architecture.
C . Apstra is available as an OVA is wrong because Apstra is available as an OVF, not an OVA. An OVF (Open Virtualization Format) is a standard format for packaging and distributing virtual machine images. An OVA (Open Virtual Appliance) is a single file that contains the OVF and the virtual disk images. Apstra provides an OVF file that can be imported into various hypervisors, such as VMware ESXi, QEMU/KVM, Microsoft Hyper-V, or Oracle VirtualBox. However, the availability of Apstra as an OVF does not affect the scalability of Apstra, which is determined by the distributed state system architecture. Reference:
JUNIPER APSTRA ARCHITECTURE
Apstra Server Requirements/Reference
Juniper Networks Apstra 4.0 enhances the experience of users and operators
NEW QUESTION # 95
Which fabric type should be chosen in a template to create a five-stage Clos?
Answer: D
Explanation:
A five-stage Clos architecture allows for large-scale topologies with an additional aggregation layer that interconnects multiple pods into a single fabric. A pod is a group of racks that share the same spine devices. A rack is a group of leaf devices that connect to the same servers. To create a five-stage Clos network using Juniper Apstra, you need to choose the pod-based fabric type in the template creation wizard. This will allow you to specify the number of pods, planes, spines, and leaves for your network design.
NEW QUESTION # 96
In the Juniper Apstra UI, what are two aspects that you are able to query under the Active tab within a blueprint? (Choose two.)
Answer: A,C
Explanation:
In Apstra 5.1, the Active view represents the operational state of the deployed fabric (as opposed to the intended state being edited in Staged). Within Active, the Query function is designed for day-2 operations where an operator needs to quickly locate endpoint-related information and validate forwarding/neighbor state derived from the fabric. The query choices exposed in the UI are focused on operational lookup primitives rather than design objects. Specifically, Apstra supports querying MAC and ARP (and also VMs when virtual infrastructure integration is present).
MAC queries help identify where a Layer 2 endpoint is being learned in the fabric-useful for troubleshooting EVPN-VXLAN fabrics where MAC learning and advertisement can determine reachability and mobility behavior. ARP queries help identify IP-to-MAC bindings and validate whether hosts are being resolved correctly, which is critical when troubleshooting first-hop behavior (for example, IRB gateway adjacency, endpoint onboarding, or unexpected IP conflicts).
By contrast, "Virtual Network" and "Routing Zone" (VRF) are primarily design constructs managed in Staged and validated/assured by analytics and intent checks; they are not the direct query selectors in the Active > Query tool. Therefore, the two correct Active-query aspects from the given options are ARP and MAC.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/task/query-active.html
NEW QUESTION # 97
You are using Juniper Apstra to create logical devices and interface maps. You use them in three different rack types. You then modify the logical devices to support the required increased interface speeds and receive an error message when updating the logical devices.
Referring to the exhibit, which action is needed to remove the error?
Answer: A
Explanation:
In Apstra 5.1, a logical device defines the abstract port layout and capabilities (including supported speeds), while an interface map binds that abstract port layout to the real, vendor-specific front-panel ports. Rack types then consume logical devices and interface maps to model the rack's leaf/superspine roles. Once a logical device is referenced by interface maps and used inside rack types (and potentially templates that instantiate those rack types), Apstra treats the combination as a consistent contract: port counts, roles, and speeds must remain semantically valid for every object that depends on it.
The exhibit's validation error indicates that after changing interface speeds on the logical device, the existing interface map(s) and their usage in rack types no longer match the logical device definition (for example, the map expects certain ports/speeds/roles, but the updated logical device would leave the map invalid). Because the logical device is being consumed in multiple places, the safest and required way to remove the error is to remove all dependencies-templates (if they reference the rack types), rack types, and interface maps-so Apstra can accept the new logical device definition without violating existing mappings. After updating the logical device, you then recreate or update the interface maps and re-associate them with the rack types/templates so the entire chain remains consistent under the new speed requirements.
NEW QUESTION # 98
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