Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company has an Amazon DynamoDB table that stores historical data. The table is accessed infrequently but when queried requires consistent single-digit millisecond latency. The SysOps administrator wants to minimize storage costs while maintaining the required performance. Which DynamoDB table class 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
Distractor review
DynamoDB Standard
Standard class is optimized for frequently accessed data and has higher storage costs than Standard-IA, making it less cost-effective for infrequent access.
B
Best answer
DynamoDB Standard-IA (Infrequent Access)
Standard-IA reduces storage costs for infrequently accessed tables while maintaining single-digit millisecond latency, fitting the use case perfectly.
C
Distractor review
DynamoDB On-Demand
On-Demand mode charges per request and may be cost-effective for very sparse workloads, but for predictable infrequent access, Standard-IA provides lower overall cost.
D
Distractor review
DynamoDB Provisioned
Provisioned capacity requires capacity planning and may lead to over-provisioning or under-provisioning costs; it is not specifically designed to minimize storage costs for infrequent access.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: DynamoDB Standard-IA (Infrequent Access) — DynamoDB Standard-IA (Infrequent Access) is designed for tables that are accessed less frequently but still require the same low latency. It offers lower storage costs compared to DynamoDB Standard, making it cost-effective for infrequent access patterns. On-Demand mode is for unpredictable workloads, Provisioned mode requires capacity planning, and Standard is for frequent access.
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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