Question 940
At North Residence, voIP phones mark DSCP EF but a distribution switch overwrites it to best effort. Which postchange observation is the strongest evidence of correct operation?
Explanation
Correct Answer
For North Residence, the decisive mechanism is DSCP trust boundary. QoS trust boundaries determine which received packet markings affect forwarding priority. Verify authorized voice gets its intended queue while bulk traffic does not supplies measurable, case-relevant evidence that the intended behavior actually occurs.
Incorrect Answers
This is relevant to RF power tuning, where excess transmit power can increase interference and sticky-client behavior In the North Residence case, That test could pass while the actual user-facing requirement still fails. The specific mechanism is qoS trust boundaries determine which received packet markings affect forwarding priority
This is relevant to Multicast-to-unicast tradeoff, where multicast-to-unicast can improve delivery to small receiver groups but adds per-recipient work In the North Residence case, That test could pass while the actual user-facing requirement still fails. The specific mechanism is qoS trust boundaries determine which received packet markings affect forwarding priority
This is relevant to Band steering under load, where band steering can guide dual-band association but depends on real RF and client support In the North Residence case, That test could pass while the actual user-facing requirement still fails. The specific mechanism is qoS trust boundaries determine which received packet markings affect forwarding priority