Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company has two Amazon VPCs: VPC-A (10.0.0.0/16) and VPC-B (10.1.0.0/16) in the same AWS Region. The SysOps administrator needs to enable private IP connectivity between the two VPCs without using the public internet. The solution must be simple, low-cost, and provide high throughput. Which AWS service should the administrator use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
VPC peering
VPC peering establishes a direct, private network connection between two VPCs using the AWS backbone. It is simple to set up, has low cost (no hourly fees, only data transfer charges), and provides high throughput with no bandwidth constraints.
B
Distractor review
AWS Site-to-Site VPN
A VPN connection would require a virtual private gateway in each VPC and tunnels over the internet, adding complexity and potential throughput limitations. It is not the simplest solution for VPC-to-VPC connectivity.
C
Distractor review
AWS Direct Connect
Direct Connect is designed for dedicated private connections from on-premises to AWS, not for connecting two VPCs. It would be expensive and unnecessarily complex for this use case.
D
Distractor review
AWS Transit Gateway
Transit Gateway is a centralized hub for connecting many VPCs and on-premises networks. For only two VPCs, it introduces additional cost (hourly fee) and operational overhead without benefit over VPC peering.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
Related practice questions
Related SOA-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company uses Amazon CloudFront to deliver content to a global audience. The origin is an Application Load Balancer in us-east-1. The SysOps administrator wants to reduce costs by minimizing the number of requests that reach the origin server. Which action should the administrator take?
Question 2
A company runs a batch processing application on Amazon EC2 that runs for 2 hours every night. The workload can tolerate interruptions. Which EC2 purchasing option provides the lowest cost for this use case?
Question 3
A SysOps administrator needs to monitor the CPU utilization of an Amazon RDS DB instance and receive an alarm when CPU utilization exceeds 80% for 5 consecutive minutes. Which AWS service should be used to create this alarm?
Question 4
A company runs a critical web application on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB). The application uses session stickiness (sticky sessions) to maintain user sessions. The SysOps administrator notices that when instances are replaced during a scale-in or failure event, users lose their session data. The administrator needs to preserve session data across instance failures without losing stickiness benefits. What should the administrator do?
Question 5
A company runs a production web application on a single Amazon EC2 instance. The application experiences a predictable and steady workload 24/7. The SysOps administrator wants to minimize compute costs for this instance while ensuring it remains available during the expected workload. Which EC2 purchasing option should the administrator use?
Question 6
A company has a VPC with public and private subnets. The private subnets host application servers that need to make outbound HTTPS connections to the internet. The SysOps administrator must implement a solution that provides outbound internet connectivity while preventing inbound connections from the internet. Additionally, the solution must allow the company to control which domains the application servers can access. Which solution should the administrator implement?
FAQ
Questions learners often ask
What does this SOA-C02 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: VPC peering — VPC peering is the simplest and most cost-effective way to connect two VPCs in the same Region. It uses the AWS network infrastructure, provides high throughput, and has no bandwidth charges (only per-GB data transfer charges). There is no single point of failure or bandwidth bottleneck like a VPN or Direct Connect. Transit Gateway (Option D) is unnecessary for the stated requirement for connecting just two VPCs and incurs hourly charges. Direct Connect (Option C) is for on-premises to AWS connections, not VPC-to-VPC. VPN (Option B) adds complexity and throughput limitations compared to VPC peering.
What should I do if I get this SOA-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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