Why This Cheat Sheet Matters for SOA-C03
This cheat sheet covers the most important Amazon Route 53 concepts tested on the SOA-C03 (AWS CloudOps Engineer Associate) certification exam. It contains 3 sections with 12 key points that you should memorize before exam day. Review hosted zones, routing policies, health checks, failover routing, resolver endpoints, private hosted zones, and DNS troubleshooting. Use this as a quick-reference guide during your final review sessions.
3Sections
12Key Points
Routing and Health
- Failover routing uses health checks to return primary or secondary records.
- Latency routing returns the lowest-latency healthy endpoint for the user.
- Weighted routing distributes traffic by configured weights.
- Multivalue answer routing can return multiple healthy records.
Hybrid DNS
- Inbound resolver endpoints allow on-premises DNS servers to resolve AWS private names.
- Outbound resolver endpoints forward selected AWS DNS queries to on-premises DNS servers.
- Resolver rules define which domains should be forwarded.
- Private hosted zones are associated with VPCs, not directly with on-premises networks.
Exam Cues
- Need DNS failover across endpoints: Route 53 failover routing with health checks.
- Need AWS to resolve on-premises names: outbound resolver endpoint.
- Need on-premises to resolve AWS private names: inbound resolver endpoint.
- Need domain-specific forwarding: resolver rule.
Practice Route 53 Questions
Put your knowledge to the test with practice questions.