Library › Book 6 › Appendix A: Quiz Answers
Appendix A: Quiz Answers
15.1🔒Chapter 1A1.1: Third-party API degradation, certificate expiration, regional connectivity issues, memory leaks that manifest over hours…
15.2🔒Chapter 2A2.1: Monitoring answers predefined questions ("Is error rate above 1%?"). Observability lets you ask arbitrary questions about system…
15.3🔒Chapter 3A3.1: Feature flags control at the application level (a user gets feature A or B). Canary deployments control at the infrastructure level…
15.4🔒Chapter 4A4.1: Feature flags control features within the application code. Canary deployments control traffic routing at the infrastructure/network…
15.5🔒Chapter 5A5.1: A/B testing randomly assigns users to groups, so any difference is caused by the change. Monitoring observes all users together…
15.6🔒Chapter 6A6.1: Structured logs can be queried programmatically, filtered, aggregated, and correlated with traces. Unstructured logs require manual…
15.7🔒Chapter 7A7.1: A trace represents an entire request flow across services. A span represents a single operation within a trace. A trace consists of…
15.8🔒Chapter 8A8.1: Metrics are pre-aggregated numerical values. A counter for 1 million requests is a single number. Logs for those requests would be 1…
15.9🔒Chapters 9-12A9.1: Third-party degradation, certificate expiration, CDN misconfiguration.