Browse Exams — Mock Exams & Practice Tests

1Z0-1042-25 Cheatsheet — OCI App Integration (API Gateway, Events, Functions)

Last-mile 1Z0-1042-25 review: API Gateway patterns, event-driven integration pickers, Functions glue code, reliability guardrails, and observability checklists.

On this page

Use this for last‑mile review. Pair it with the Syllabus.

1) API Gateway: the “safe front door”

High-yield reminders:

  • Put public APIs behind API Gateway, not directly in front of private services.
  • Prefer least privilege IAM for backends (resource principals where applicable).
  • Use throttling/rate limits (concept-level) and authentication consistently.

2) Event-driven integration: choose the right spine

RequirementPreferWhy
React to OCI resource changesEventsnative event source
Fan-out to many targetsNotificationssimple pub/sub
Durable, replayable stream (concept-level)Streamingordered partitions
Workflow glueFunctionsquick compute for transforms

3) Reliability guardrails (exam favorites)

  • Idempotency: retries must not double-apply side effects.
  • Backoff + retries: assume transient failures.
  • Dead-letter handling (concept-level): have a place for poison messages.
  • Timeouts: “hang forever” is not a strategy.

4) Security checklist (what correct answers include)

  • IAM: minimal policies, separate environments, compartment boundaries.
  • Secrets: use Vault for keys/secrets; don’t hardcode in functions.
  • Network: private endpoints where possible; restrict ingress/egress.
  • Audit + logs: keep evidence for changes and access.
Syllabus
Practice