Exam : JN0-481
Title : Data Center, Specialist
(JNCIS-DC)
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1.A DevOps engineer is using Apstra's Intent-Based Analytics (IBA) to investigate a report of intermittent
high latency for an application. The engineer suspects that some links in the fabric might be overutilized
due to suboptimal ECMP load balancing.
Which Apstra IBA feature would be most effective for verifying this suspicion?
A. The BGP session anomaly probe.
B. A custom query of the Apstra graph database to check interface descriptions.
C. The "Interface Traffic" and "Link Utilization" predefined probes.
D. The Time Voyager feature to compare routing tables.
Answer: C
2.A network operations engineer is troubleshooting an EVPN-VXLAN fabric where a host in VLAN 100
cannot communicate with a host in VLAN 200. Both hosts are connected to the same leaf switch (Leaf-1).
The engineer suspects an issue with the Layer 3 routing configuration within the overlay. The fabric uses
an Edge-Routed Bridging (ERB) model.
The engineer issues the following command on Leaf-1:
user@Leaf-1> show evpn database
Instance: default-switch
VLAN VNI MAC address Active source Timestamp
100 10100 00:0c:29:11:22:33 vtep.32769 Oct 27 10:20:15
200 10200 00:0c:29:44:55:66 vtep.32769 Oct 27 10:21:05
...
user@Leaf-1> show configuration routing-instances
TENANT-A {
instance-type vrf;
interface irb.100;
interface irb.200;
route-distinguisher 192.168.0.1:100;
vrf-target target:65001:100;
vrf-table-label;
}
Given this output, what is the most likely reason for the communication failure?
A. Leaf-1 is not advertising EVPN Type 5 routes for the IRB subnet.
B. Both IRB interfaces are correctly configured in the same VRF, so the issue must be in the underlay.
C. The MAC addresses for the hosts have not been learned.
D. The VTEP interface on Leaf-1 is down.
Answer: A
3.An Operations Engineer has been tasked with managing an Apstra-managed fabric. A key part of the
daily workflow is to check for any deviations from the intended state.
Which two features in the Apstra UI would be the primary tools for this daily health check? (Choose 2.)
A. The Design Templates section
B. The main Blueprint Dashboard
C. The Time Voyager
D. The Device Profiles section
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