What is the required retransmission rate to trigger an alert?

The correct choice outlines that a retransmission rate exceeding 10% is indicative of potential network issues that may need to be investigated further. In performance monitoring and network health assessments, a retransmission rate reflects the frequency at which packets sent over a network must be resent due to loss or errors.

When the retransmission rate exceeds 10%, it often signifies significant underlying problems such as network congestion, faulty hardware, or issues with the configuration that can lead to degraded performance. Monitoring tools, such as Dynatrace, set thresholds to help detect these anomalies proactively. A threshold of 10% or more is typically used in alert configurations to signify that immediate attention may be required to ensure network reliability and application performance.

In contrast, a lower percentage may not necessarily indicate a problematic situation, as all networks can experience some level of retransmission without signaling an alert. Thus, having a trigger at 10% ensures that alerts are both sensitive enough to catch genuine issues but not too sensitive to create unnecessary alerts for minor, acceptable fluctuations in transmission rates. This threshold effectively balances the need for responsiveness in monitoring while minimizing false positives.