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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Juniper Networks Certified Specialist - Data Center (JNCIS-DC) Exam |
| Exam Number: | JN0-481 |
| Exam Price: | $150 USD |
| Passing Score: | 70% |
| Related Certifications: | JNCIE-DC (Data Center, Expert) JNCIA-DC (Data Center, Associate) JNCIP-DC (Data Center, Professional) |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multi-Response, Multiple Choice |
| Real Exam Qty: | 65 |
| Exam Duration: | 90 minutes |
| Recommended Training: | Juniper Apstra Essentials Juniper Data Center Architectures |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Juniper JN0-481 Sample Questions |
| Exam Way: | Online proctored or Onsite at Pearson VUE test centers |
| Pre Condition: | Recommended: JNCIA-DC (Data Center, Associate) certification or equivalent knowledge |
| Official Syllabus URL: | https://www.juniper.net/training/certification/tracks/data-center/jncis-dc.html |
We are dedicated to providing our clients with the most current and accurate Data Center, Specialist (JNCIS-DC) study material. That is why we provide 1 year of free JN0-481 questions updates if the Juniper certification test content changes after your purchase. With this option, our clients can confidently use the most up-to-date and dependable JN0-481 preparatory material.
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NEW QUESTION # 43
Which statement is correct about an event log?
Answer: B
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 # 44
You have an EVPN-VXLAN data center IP fabric, with all single-homed hosts/servers. Which two EVPN route types are present in this scenario? (Choose two.)
Answer: A,C
Explanation:
In an EVPN-VXLAN fabric where all hosts are single-homed (each endpoint is attached to only one leaf/VTEP), the EVPN control plane still needs to advertise endpoint reachability and enable BUM handling across the overlay. Two EVPN route types are fundamental in this case: Type 2 and Type 3.
EVPN Route Type 2 (MAC/IP Advertisement) is used to advertise learned MAC addresses and, optionally, associated IP addresses for endpoints connected to the local leaf. This enables remote VTEPs to learn where a given host resides (which VTEP to send unicast traffic to) without relying on data-plane flooding for MAC learning. In Junos v24.4 EVPN-VXLAN deployments, Type 2 routes are the core mechanism for distributing endpoint reachability (MAC and MAC+IP bindings) within the EVPN domain.
EVPN Route Type 3 (Inclusive Multicast Ethernet Tag / IMET) is used to establish the flooding scope for BUM traffic in EVPN-VXLAN. In VXLAN fabrics that use ingress replication (common in data centers), Type 3 routes help build the list of remote VTEPs that should receive replicated BUM traffic for a given segment.
By contrast, Type 4 (Ethernet Segment) routes are associated with EVPN multihoming (ESI-based) and DF election; with only single-homed hosts, Type 4 is not required. Type 7 is not part of the baseline single-homed EVPN-VXLAN host advertisement set in this context.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/concept/evpn-bgp-multihoming-overview.html
https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/topic-map/assisted-replication-evpn.html
NEW QUESTION # 45
What is the purpose of using a routing zone inside Juniper Apstra software?
Answer: A
Explanation:
A routing zone is an L3 domain, the unit of tenancy in multi-tenant networks. You create routing zones for tenants to isolate their IP traffic from one another, thus enabling tenants to re-use IP subnets. In addition to being in its own VRF, each routing zone can be assigned its own DHCP relay server and external system connections. You can create one or more virtual networks within a routing zone, which means a tenant can stretch its L2 applications across multiple racks within its routing zone. For virtual networks with Layer 3 SVI, the SVI is associated with a Virtual Routing and Forwarding (VRF) instance for each routing zone isolating the virtual network SVI from other virtual network SVIs in other routing zones.
NEW QUESTION # 46
What is the purpose of a Juniper Apstra rack?
Answer: A
Explanation:
A Juniper Apstra rack is a physical entity that contains one or more network devices, such as leaf nodes, access switches, or generic systems. A rack is used to organize and manage the network devices in the Apstra software application. A rack has the following characteristics:
It stores information on how leaf nodes connect to generic devices. This is because a rack can include generic systems, which are devices that are not managed by Juniper Apstra, but are connected to the network. A generic system can be a server, a firewall, a load balancer, or any other device that has a network interface. A rack stores the information on how the leaf nodes, which are the devices that provide access to the end hosts, connect to the generic devices, such as the port number, the link speed, the LAG mode, and the roles1.
It has a rack type, which defines the type and number of leaf devices, access switches, and/or generic systems that are used in the rack. A rack type is a resource that is created in the data center design phase, and it does not specify the vendor or the model of the devices. A rack type can be predefined or custom-made, and it can be used to create multiple racks with the same structure and configuration2.
It has a rack build, which assigns the specific vendor and model of the devices to the rack. A rack build is created in the staged phase, and it uses the rack type as a template. A rack build can also assign the resources, such as the IP addresses, the ASNs, and the VNIs, to the devices in the rack3.
It has a rack deployment, which applies the network configuration and services to the devices in the rack. A rack deployment is performed in the active phase, and it uses the rack build as a reference. A rack deployment can also monitor the network performance and compliance of the devices in the rack4.
The following three statements are incorrect in this scenario:
It stores information on how pods connect to super spines. This is not true, because a rack does not store any information on the pod or the super spine level of the network. A pod is a cluster of leaf and spine devices that form a 3-stage Clos topology, and a super spine is a device that connects multiple pods in a 5-stage Clos topology. A rack only stores information on the leaf and the access level of the network1.
It stores IP address and ASN pool information. This is not true, because a rack does not store any information on the IP address and ASN pools. IP address and ASN pools are resources that are created in the data center design phase, and they contain a range of IP addresses and ASNs that can be assigned to the devices and the virtual networks. A rack only uses the IP address and ASN pools to assign the resources to the devices in the rack build2.
It stores device port data rates and vendor information. This is not true, because a rack does not store any information on the device port data rates and vendor information. The device port data rates and vendor information are specified in the rack build, which assigns the specific vendor and model of the devices to the rack. A rack only uses the rack build to apply the network configuration and services to the devices in the rack deployment3.
Reference:
Racks (Staged)
Rack Types (Datacenter Design)
Rack Builds (Staged)
Racks (Active)
NEW QUESTION # 47
Which Root Cause Identifier is currently supported in Juniper Apstra software?
Answer: A
Explanation:
In Juniper Apstra 5.1, Root Cause Identification (RCI) is implemented with a currently supported model focused on connectivity. Practically, this means RCI is designed to take telemetry and state learned from the fabric (for example, interface operational status, LLDP neighbor information, and routing session status) and correlate those signals to determine the most likely underlying cause of a connectivity-impacting event. Within an EVPN-VXLAN IP fabric, many operational symptoms can appear similar at the service layer (endpoints cannot reach each other, routes disappear, overlays degrade), but RCI narrows the problem by correlating evidence across the underlay and control plane.
The "connectivity" RCI model targets common failure scenarios that directly break device-to-device reachability, such as a broken link, a miscabled link (wrong LLDP neighbors), or an operator-disabled interface. These conditions often cascade into higher-level symptoms, including BGP sessions dropping over affected links. With Junos v24.4-based leaf-spine fabrics, maintaining stable underlay connectivity is foundational for EVPN signaling and VXLAN forwarding; therefore, Apstra's connectivity-focused RCI helps operators rapidly isolate whether the primary fault lies in physical adjacency, cabling/neighbor correctness, or administrative shutdown-reducing mean time to repair by pointing to the most probable root cause rather than only listing alarms.
NEW QUESTION # 48
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