ANS-C01 Network Management and Operations Practice Question
A network engineer is troubleshooting intermittent connectivity issues between two VPCs connected via a VPC peering connection. The engineer notices that the route tables in both VPCs have the correct routes. What should the engineer check next?
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
✓
Check security group and network ACL rules
Security group rules and NACLs can block traffic even if routes are correct. Option B is wrong because DNS resolution is not related to basic connectivity. Option C is wrong because internet gateway is not involved in VPC peering. Option D is wrong because VPN connection is a different service.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Check security group and network ACL rules
Why this is correct
Security groups and NACLs can block traffic even with correct routes.
- ✗
Verify that DNS resolution is enabled for the VPCs
Why it's wrong here
DNS resolution does not affect basic IP connectivity.
- ✗
Ensure that the VPN connection is active
Why it's wrong here
VPN connection is not relevant to VPC peering.
- ✗
Check the internet gateway configuration
Why it's wrong here
Internet gateway is not used in VPC peering.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 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 ANS-C01 exam.