ANS-C01 Network Management and Operations Practice Question
A network engineer is setting up a VPC peering connection between two VPCs in the same AWS account and Region. Which TWO steps are required to enable communication between instances in the peered VPCs? (Choose two.)
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
✓
Add routes in each VPC's route table pointing to the CIDR of the other VPC
VPC peering requires adding routes in both VPC route tables to direct traffic to the peered VPC's CIDR. Option E is correct because security group rules must be updated to allow inbound traffic from the peered VPC's CIDR. Option A is incorrect because VPC peering does not require an internet gateway. Option B is incorrect because VPC peering does not use a VPN connection. Option D is incorrect because a NAT gateway is not required for VPC peering.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Attach an internet gateway to each VPC
Why it's wrong here
Internet gateways are for internet access, not VPC peering.
- ✗
Establish a VPN connection between the VPCs
Why it's wrong here
VPC peering uses AWS backbone, not VPN.
- ✓
Add routes in each VPC's route table pointing to the CIDR of the other VPC
Why this is correct
Routes are needed for traffic to traverse the peering connection.
- ✗
Configure a NAT gateway in each VPC
Why it's wrong here
NAT gateways are for outbound internet access, not peering.
- ✓
Update security group rules to allow traffic from the peered VPC CIDR
Why this is correct
Security groups must explicitly allow inbound traffic.
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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.