Question 270
At Fairmont Logistics, the distribution-center switching team is preparing a warehouse device rollout. The operational constraint is critical handheld scanner uptime. A production-readiness reviewer asks for proof addressing: Untrusted endpoints mark all traffic with a high priority DSCP value to win bandwidth. Which result BEST demonstrates that this specific issue was resolved?
Explanation
Correct Answer
Captured packets show approved remarking while trusted voice signaling retains intended priority. This is the relevant acceptance observation for the reported issue: Untrusted endpoints mark all traffic with a high priority DSCP value to win bandwidth. The intended corrective choice is: Rewrite or ignore untrusted markings and establish QoS trust only at controlled network boundaries. At Fairmont Logistics, this outcome verifies actual operation under critical handheld scanner uptime, rather than only a ticket marked complete.
Incorrect Answers
The backup flow conforms to its configured rate and higher-priority traffic remains within service thresholds. Such an observation would verify a separate issue: A low-value backup service saturates a link and needs a hard rate cap rather than preferential scheduling. It would follow the distinct action: Use a suitable policer or shaper according to the required rate and buffering behavior. Here the reported failure is Untrusted endpoints mark all traffic with a high priority DSCP value to win bandwidth. The decisive result for Fairmont Logistics must instead be: Captured packets show approved remarking while trusted voice signaling retains intended priority.
Latency and loss for critical classes stay within target limits during controlled congestion. Such an observation would verify a separate issue: During WAN congestion, control-plane and voice flows suffer despite adequate physical interface speeds. It would follow the distinct action: Apply appropriate scheduler and queue-priority policies to protect delay-sensitive traffic. Here the reported failure is Untrusted endpoints mark all traffic with a high priority DSCP value to win bandwidth. The decisive result for Fairmont Logistics must instead be: Captured packets show approved remarking while trusted voice signaling retains intended priority.
Voice test packets receive the correct classification and queue treatment end to end. Such an observation would verify a separate issue: Real-time voice is queued with bulk backups because ingress traffic is not classified correctly. It would follow the distinct action: Classify traffic by approved application or DSCP rules at the defined trust boundary before queue assignment. Here the reported failure is Untrusted endpoints mark all traffic with a high priority DSCP value to win bandwidth. The decisive result for Fairmont Logistics must instead be: Captured packets show approved remarking while trusted voice signaling retains intended priority.