▸case-21 During an ongoing customer-impacting database outage, support representatives are receiving thousands of tickets, but no public announcements or status page updates have been published. What external communication actions should be taken? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-05 The search filtering feature on a major retail platform is throwing intermittent 500 errors affecting 30% of users, but standard search and purchase checkouts still function. An engineer proposes treating this as a minor background task with a 3-day SLA. What severity level applies and what are the acknowledgment and update cadences? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-11 Users report 15-second latency on API calls involving microservice A, microservice B, and microservice C. The infrastructure team is looking only at server host CPU utilization graphs, which show normal load. What observability tool pattern should be employed to trace request latency across microservice boundaries? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-10 An API service is crashing continuously under a sudden 10x traffic spike due to an unexpected viral campaign. The development team proposes starting a code refactoring branch to optimize memory allocation. What immediate stabilization actions should be taken within the first 5 minutes to restore stability before modifying application code? | pass→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-09 A high-severity outage just struck the billing system. The engineering lead attempts to debug code, write executive email updates, post on the status page, and manage customer support inquiries all by themselves. What command structure roles should be established immediately to organize the response team? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-17 A multi-tenant REST API allows a single heavy tenant to exhaust all available HTTP worker threads, causing connection timeouts for all other tenants sharing the application server. What SRE reliability pattern isolates resources to prevent one tenant from taking down the entire service? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-22 A downstream payment service vendor is experiencing prolonged elevated latency of 30 seconds per request, causing upstream checkout threads to backlog and crash. What automated software pattern automatically isolates the downstream failure when thresholds are breached? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-02 Configure a GitHub Actions workflow YAML file that builds a Go application binary, runs unit tests, builds a Docker container, and pushes it to Amazon ECR on pushes to the main branch. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-06 A non-critical user profile page displays broken CSS layout styling on mobile web browsers affecting a small percentage of users, while core ordering functions remain intact. The triage team wants to invoke an emergency 24/7 war room escalation. What is the appropriate severity classification and resolution SLA target? | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-18 An e-commerce backend's personalized product recommendation service is throwing 500 errors during Black Friday traffic peak. A team member suggests returning a 500 internal server error page for the entire shopping cart checkout page when recommendations fail. What reliability strategy should be used instead? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-01 I need a Terraform module to provision an AWS VPC with public and private subnets across two availability zones, including NAT gateways and route tables. Provide the complete HCL code structure. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-04 Payment processing gateway for an e-commerce platform is completely down globally, blocking all customer transactions and causing zero successful checkouts. Management wants to classify this issue and set operational target SLAs. A developer suggests classifying this as SEV-3 with a 24-hour resolution window. How should this incident be classified and what are its target response and update parameters? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-14 An outage occurred because a senior engineer accidentally ran a database migration script against production instead of staging. The VP of Engineering requests adding a disciplinary reprimand to the engineer's annual review in the incident post-mortem. How should the post-mortem process address this incident? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-03 Generate a 12-month compute capacity forecast spreadsheet template and analysis framework for budgeting Kubernetes node scaling based on historical quarterly growth metrics. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-13 During a backend database slowdown, front-end microservices immediately retry failed requests without waiting, creating a feedback loop that completely overwhelms the database. What architectural failure mechanism is occurring and how should retries be configured to stop it? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-12 A web application's 30-day error budget is being consumed at a 14x burn rate following a series of unstable feature deployments. Product management insists on pushing three new feature releases this week. What SRE policy action must be enforced when error budget burn rates threaten SLA compliance? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-16 After resolving a SEV-1 outage, the responder is preparing the post-incident documentation. An engineer suggests providing a generic summary paragraph without specific timestamps or metrics. What specific documentation standard must be included in the incident timeline? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-20 An active P0 incident was successfully mitigated 30 minutes ago. The on-call engineer wants to immediately turn off monitoring alerts, close all tickets, and go offline without further action. What actions must be completed within the first 24 hours post-incident? | pass→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-07 A typo was discovered in the footer copy of the admin settings dashboard. The team lead wants to page the on-call SRE engineer at 2 AM to fix it immediately. How should this issue be categorized, and what are its response time and resolution SLAs? | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-19 An SRE team notices a sharp 400% increase in 5xx error rates across core microservices starting at 14:05 UTC, but system metric dashboards show healthy CPU and RAM across all hosts. What investigation step should be prioritized to identify potential triggers? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-08 During an ongoing P0 database outage affecting millions of live users, an engineer recommends pausing all traffic mitigation efforts to capture heap dumps and perform deep line-by-line code debugging. What principle should govern the responder's immediate decision? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-15 During an incident post-mortem review, the team notes that a service failed due to an unhandled null pointer exception and wants to close the review immediately after noting that software bug. What structured root cause analysis methodology should be applied to probe deeper underlying systemic causes? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |