Exam 300-620 topic 1 question 185 discussion

C. align the ACI QoS levels and IPN QoS policies In a Cisco ACI Multi-Pod deployment, when an application is sensitive to latency and jitter, it is critical to ensure that Quality of Service (QoS) policies are consistent between the ACI fabric and the Inter-Pod Network (IPN). This ensures that traffic marked with specific DSCP values (e.g., AF31 and CS6 in this case) is handled with the appropriate priority across the entire network path, preventing delays or packet drops.

Translate policy has to be enabled. In order to preserve the proper QoS Level of the packet and avoid high priority packets from being delayed or dropped, you can use a DSCP translation policy for traffic that goes between multiple PODs connected by an IPN. Also Note For traffic passing through the IPN, do not map any DSCP values to CS6. Which leaves only C as viable answer. As you have to align QoS. as per ref:https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/kb/Cisco-APIC-and-QoS.html#id_34903