- A
Deploy a NAT gateway in each Availability Zone and update the route tables for each private subnet to point to the NAT gateway in the same Availability Zone.
This configuration provides highly available outbound connectivity: if one AZ fails, instances in other AZs continue to have internet access through their local NAT gateway.
- B
Attach an Internet Gateway to the VPC and add a default route (0.0.0.0/0) to the Internet Gateway in the private subnet route tables.
Why wrong: Instances in private subnets do not have a public IP; adding a default route to an Internet Gateway will not work because the Internet Gateway requires instances to have public IPs or Elastic IPs for outbound traffic.
- C
Create a VPC endpoint for Amazon S3 and route traffic through it.
Why wrong: A VPC endpoint provides private connectivity to Amazon S3 (and other AWS services), but does not provide general internet access needed to download patches from external sources.
- D
Set up an AWS Direct Connect connection and route all internet-bound traffic through it.
Why wrong: AWS Direct Connect provides a private connection to AWS, but does not inherently provide internet access; additional routing and an internet gateway would still be required.
SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs a web application on Amazon EC2 instances in private subnets across multiple Availability Zones. The instances need to download software patches from the internet. The SysOps administrator requires a highly available, fully managed solution for outbound internet connectivity. Which solution should be implemented?
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
Deploy a NAT gateway in each Availability Zone and update the route tables for each private subnet to point to the NAT gateway in the same Availability Zone.
A NAT gateway in each Availability Zone provides highly available outbound internet connectivity for instances in private subnets. By placing a NAT gateway in each AZ and routing private subnet traffic to the NAT gateway in the same AZ, you eliminate a single point of failure and ensure that internet-bound traffic remains within the same AZ for low latency and fault tolerance. This is a fully managed AWS service that handles scaling and failover automatically.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deploy a NAT gateway in each Availability Zone and update the route tables for each private subnet to point to the NAT gateway in the same Availability Zone.
- ✗
Attach an Internet Gateway to the VPC and add a default route (0.0.0.0/0) to the Internet Gateway in the private subnet route tables.
Why it's wrong here
Instances in private subnets do not have a public IP; adding a default route to an Internet Gateway will not work because the Internet Gateway requires instances to have public IPs or Elastic IPs for outbound traffic.
- ✗
Create a VPC endpoint for Amazon S3 and route traffic through it.
Why it's wrong here
A VPC endpoint provides private connectivity to Amazon S3 (and other AWS services), but does not provide general internet access needed to download patches from external sources.
- ✗
Set up an AWS Direct Connect connection and route all internet-bound traffic through it.
Why it's wrong here
AWS Direct Connect provides a private connection to AWS, but does not inherently provide internet access; additional routing and an internet gateway would still be required.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse NAT gateways with Internet Gateways, thinking that a single NAT gateway in one AZ provides high availability, but the correct design requires a NAT gateway in each AZ to avoid cross-AZ data transfer costs and single points of failure.
Detailed technical explanation
How to think about this question
NAT gateways use Elastic IP addresses for outbound traffic and automatically handle source network address translation (SNAT) for instances in private subnets. They are horizontally scaled within an AZ by AWS and can support up to 45 Gbps of bandwidth. In a multi-AZ setup, each NAT gateway is independent, so if one AZ fails, instances in other AZs continue to have internet access through their local NAT gateway, ensuring high availability.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
Networking and Content Delivery — This question tests Networking and Content Delivery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy a NAT gateway in each Availability Zone and update the route tables for each private subnet to point to the NAT gateway in the same Availability Zone. — A NAT gateway in each Availability Zone provides highly available outbound internet connectivity for instances in private subnets. By placing a NAT gateway in each AZ and routing private subnet traffic to the NAT gateway in the same AZ, you eliminate a single point of failure and ensure that internet-bound traffic remains within the same AZ for low latency and fault tolerance. This is a fully managed AWS service that handles scaling and failover automatically.
What should I do if I get this SOA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This SOA-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 SOA-C02 exam.
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