SAP-C02 Practice Question: Design Solutions for Organizational Complexity
A company has a complex AWS environment with multiple VPCs connected via a transit gateway. The company wants to centrally manage DNS resolution across all VPCs. Currently, each VPC has its own Amazon Route 53 private hosted zone. The company needs a solution that allows resources in any VPC to resolve DNS names from any other VPC's private hosted zone. Which solution should be implemented?
⚠ Common exam trap
It's easy for candidates to confuse VPC peering DNS options with private hosted zone resolution, assuming that enabling 'Allow DNS resolution from peered VPC' automatically resolves private hosted zones across peers, when in fact it only affects the default VPC DNS server (AmazonProvidedDNS) and not custom private hosted zones.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Route 53 Resolver outbound endpoints and forwarding rules to forward DNS queries to the appropriate private hosted zones.
Route 53 Resolver outbound endpoints allow you to forward DNS queries from your VPCs to custom DNS resolvers or to other private hosted zones. By creating outbound endpoints and forwarding rules, you can centrally route DNS queries from any VPC to the appropriate private hosted zone associated with another VPC, enabling cross-VPC DNS resolution without requiring VPC peering or complex associations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create VPC peering connections between all VPCs and enable the 'Allow DNS resolution from peered VPC' option.
Why it's wrong here
Peering does not automatically resolve private hosted zones across VPCs.
- ✓
Use Route 53 Resolver outbound endpoints and forwarding rules to forward DNS queries to the appropriate private hosted zones.
Why this is correct
Resolver endpoints and forwarding rules enable cross-VPC DNS resolution.
- ✗
Configure Route 53 Resolver inbound endpoints in each VPC and set up conditional forwarding.
Why it's wrong here
Inbound endpoints are for on-premises resolvers to forward to VPCs.
- ✗
Associate each private hosted zone with each VPC using Route 53.
Why it's wrong here
Private hosted zones can only be associated with VPCs in the same account.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.