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NEW QUESTION # 13
You are creating a template using Juniper Apstra.
In this scenario, what is a rack-based design compared to a pod-based design?
Answer: B
Explanation:
In Juniper Apstra:
A rack-based design typically maps to a three-stage Clos topology, where racks are the unit of scale and directly connect to spine devices.
A pod-based design corresponds to a five-stage Clos topology, where multiple racks are grouped into pods, and the fabric scales further using additional layers (e.g., super spines).
NEW QUESTION # 14
You must enable ECMP load balance in your three-stage eBGP IP Clos fabric. In this scenario, which two features are required? (Choose two.)
Answer: A,B
Explanation:
In a three-stage eBGP IP Clos, a leaf typically learns the same prefix through multiple spines, and those spines are commonly in different AS numbers (a standard Clos pattern for simplified operations and fault isolation). To install multiple equal-cost eBGP paths for the same destination, Junos requires BGP multipath and, when the candidate paths come from different neighbor ASs, you must use the multiple-as capability (expressed as "multipath multiple-as" in many designs) to bypass the default same-neighbor-AS restriction for multipath selection. This ensures multiple eligible eBGP next-hops can be accepted as equal-cost paths and installed.
Separately, to actually perform load balancing in the forwarding plane across those installed next-hops, Junos uses a load-balancing policy that is applied to the forwarding table via routing-options forwarding-table export <policy>. This policy (for example, per-packet or consistent-hash variants, depending on platform and intent) activates the forwarding behavior needed to distribute traffic over the ECMP set.
A "load-balance policy applied to the BGP group" is not the required mechanism for ECMP forwarding behavior in this context, and multihop is unnecessary in a Clos underlay because neighbors are typically directly connected.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/load-balancing-bgp-session.html
NEW QUESTION # 15
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: B,C
Explanation:
In the Juniper Apstra UI, under the Active tab within a blueprint, operators can query real-time operational data collected from devices. This includes aspects such as ARP tables and MAC tables, which help verify active device state and connectivity in the deployed fabric.
NEW QUESTION # 16
You are considering the bridged overlay EVPN-VXLAN architecture. In this scenario, how many VLANs would be enabled in the VLAN-based service type at the MAC-VRF EVPN instance level?
Answer: B
Explanation:
In Junos EVPN, the service type determines how VLANs (broadcast domains) are mapped into EVPN constructs. With VLAN-based service, the mapping is one-to-one: a single VLAN (single broadcast domain) maps to a single EVPN instance (EVI), resulting in a separate bridge table per VLAN. When you implement EVPN-VXLAN in a bridged overlay (L2 extension over an L3 underlay), leaf devices act as VTEPs and encapsulate VLAN traffic into VXLAN using the associated VNI, but the service-type mapping rule still applies.
At the MAC-VRF hierarchy, you configure the EVPN-VXLAN parameters and choose the service type for that EVPN instance. If the service type selected is VLAN-based, then the EVI represents exactly one VLAN at that EVPN instance level. If you need multiple VLANs under the same MAC-VRF/EVI construct, Junos provides alternative service types (for example, VLAN-aware or VLAN-bundle) specifically intended to associate multiple VLANs with a single EVPN instance; that is not what VLAN-based service does.
Therefore, in a bridged overlay EVPN-VXLAN design using VLAN-based service at the MAC-VRF EVPN instance level, the correct answer is one VLAN. This remains true regardless of how many total VLANs exist across the fabric; each VLAN-based EVI handles a single VLAN.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/concept/evpn-based-services.html
https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/concept/mac-vrf-routing-instance-overview.html
NEW QUESTION # 17
Which two actions are required during Juniper Apstra's deploy phase? (Choose two.)
Answer: A,B
Explanation:
The deploy phase is the final step in the Juniper Apstra data center fabric design and deployment process. In this phase, you apply the Apstra-rendered configuration to the devices and verify the intent of the blueprint. Based on the web search results, we can infer the following actions are required during the deploy phase12:
Assign device profiles to the blueprint. This action associates a specific vendor model to each logical device in the blueprint. Device profiles contain extensive hardware model details, such as form factor, ASIC, CPU, RAM, ECMP limit, and supported features. Device profiles also define how configuration is generated, how telemetry commands are rendered, and how configuration is deployed on a device. Device profiles enable the Apstra system to render and deploy the configuration according to the Apstra Reference Design34.
Assign resources to the blueprint. This action allocates the physical devices, IP addresses, VLANs, and ASNs to the logical devices, networks, and routing zones in the blueprint. Resources can be assigned manually or automatically by the Apstra system. Assigning resources ensures that the blueprint has all the necessary elements to generate the configuration and deploy the fabric5 .
Assign user roles to the blueprint. This action is not required during the deploy phase. User roles are defined at the system level, not at the blueprint level. User roles determine the permissions and access levels of different users in the Apstra system. User roles can be system-defined or custom-defined .
Assign interface maps to the blueprint. This action is not required during the deploy phase. Interface maps are defined at the design phase, not at the deploy phase. Interface maps are objects that map the logical interfaces of a logical device to the physical interfaces of a device profile. Interface maps enable the Apstra system to generate the correct interface configuration for each device in the fabric . Reference:
Deploy
Deploy Device
Device Profiles
Juniper Device Profiles
Resources
NEW QUESTION # 18
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