- A
Move the state data to an external data store such as ElastiCache or RDS.
Makes the application stateless and resilient.
- B
Attach an EBS volume and set the 'DeleteOnTermination' flag to false.
Why wrong: EBS volume may not be available immediately; state may be stale.
- C
Use instance store volumes for the state data.
Why wrong: Instance store is ephemeral.
- D
Use Amazon SQS to store the state data.
Why wrong: SQS is for message queues, not general state.
Question 299 of 1,546
Prevent State Loss on Instance Failure
This SOA-C02 practice question tests your understanding of reliability and business continuity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 critical application on EC2 instances in an Auto Scaling group. The application stores state information locally on the instance. The SysOps administrator needs to ensure that if an instance fails, the state is not lost. What should the administrator do?
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
✓
Move the state data to an external data store such as ElastiCache or RDS.
Option A is correct because moving state data to an external data store like ElastiCache or RDS decouples the state from the EC2 instance, making the application stateless. If an instance fails, the state persists in the external store and can be accessed by a new instance. Option B is incorrect because while setting 'DeleteOnTermination' to false preserves the EBS volume, it requires reattaching the volume to a new instance, which introduces latency and complexity, and the state may be stale. Option C is incorrect because instance store volumes are ephemeral and data is lost on instance stop/termination. Option D is incorrect because Amazon SQS is a message queuing service, not designed for state storage; it provides at-least-once delivery but does not offer the durability or consistency needed for critical state data.
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.
- ✓
Move the state data to an external data store such as ElastiCache or RDS.
Why this is correct
Makes the application stateless and resilient.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Attach an EBS volume and set the 'DeleteOnTermination' flag to false.
Why it's wrong here
EBS volume may not be available immediately; state may be stale.
- ✗
Use instance store volumes for the state data.
Why it's wrong here
Instance store is ephemeral.
- ✗
Use Amazon SQS to store the state data.
Why it's wrong here
SQS is for message queues, not general state.
Common exam traps
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.
Detailed technical explanation
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.
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 SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
Reliability and Business Continuity — study guide chapter
Learn the concepts, then practise the questions
- →
Reliability and Business Continuity practice questions
Targeted practice on this topic area only
- →
All SOA-C02 questions
1,546 questions across all exam domains
- →
AWS Certified SysOps Administrator Associate SOA-C02 study guide
Full concept coverage aligned to exam objectives
- →
SOA-C02 practice test guide
How to use practice tests most effectively before exam day
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.
Monitoring, Logging, and Remediation practice questions
Practise SOA-C02 questions linked to Monitoring, Logging, and Remediation.
Reliability and Business Continuity practice questions
Practise SOA-C02 questions linked to Reliability and Business Continuity.
Deployment, Provisioning, and Automation practice questions
Practise SOA-C02 questions linked to Deployment, Provisioning, and Automation.
Security and Compliance practice questions
Practise SOA-C02 questions linked to Security and Compliance.
Networking and Content Delivery practice questions
Practise SOA-C02 questions linked to Networking and Content Delivery.
Cost and Performance Optimization practice questions
Practise SOA-C02 questions linked to Cost and Performance Optimization.
SOA-C02 fundamentals practice questions
Practise SOA-C02 questions linked to SOA-C02 fundamentals.
SOA-C02 scenario practice questions
Practise SOA-C02 questions linked to SOA-C02 scenario.
SOA-C02 troubleshooting practice questions
Practise SOA-C02 questions linked to SOA-C02 troubleshooting.
Practice this exam
Start a free SOA-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SOA-C02 question test?
Reliability and Business Continuity — This question tests Reliability and Business Continuity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Move the state data to an external data store such as ElastiCache or RDS. — Option A is correct because moving state data to an external data store like ElastiCache or RDS decouples the state from the EC2 instance, making the application stateless. If an instance fails, the state persists in the external store and can be accessed by a new instance. Option B is incorrect because while setting 'DeleteOnTermination' to false preserves the EBS volume, it requires reattaching the volume to a new instance, which introduces latency and complexity, and the state may be stale. Option C is incorrect because instance store volumes are ephemeral and data is lost on instance stop/termination. Option D is incorrect because Amazon SQS is a message queuing service, not designed for state storage; it provides at-least-once delivery but does not offer the durability or consistency needed for critical state data.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on SOA-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company runs a stateful application on EC2 instances in an Auto Scaling group. The application maintains state in memory. The SysOps administrator wants to ensure that when an instance is terminated, the state is preserved and a new instance can resume operation. Which approach should the administrator use?
hard- ✓ A.Use an Auto Scaling lifecycle hook to offload state before termination.
- B.Use a warm standby instance that takes over when the primary fails.
- C.Configure the EC2 instance to run a script on shutdown to save state locally.
- D.Enable connection draining on the ALB.
Why A: Option A is correct because an Auto Scaling lifecycle hook can be configured to execute a custom action (e.g., offloading in-memory state to Amazon S3 or ElastiCache) before the instance is terminated. The lifecycle hook places the instance in a 'terminating:wait' state, allowing the administrator to run a script that preserves state, and then completes the termination via CompleteLifecycleAction. This ensures state is saved before the instance is fully terminated, enabling a new instance to resume operation.
Keep practising
More SOA-C02 practice questions
- A company uses an Amazon DynamoDB table with on-demand capacity mode. The table handles a workload with a steady baselin…
- A company uses Amazon CloudWatch Logs to store application logs. The SysOps administrator needs to count the occurrences…
- A SysOps administrator needs to monitor the CPU utilization of an Amazon EC2 instance and send an alert when it exceeds…
- A SysOps administrator needs to monitor the CPU utilization of an Amazon EC2 instance fleet and send an alert when the a…
- A company's security policy requires that all Amazon S3 buckets must have server-side encryption enabled. The SysOps adm…
- A SysOps administrator uses AWS CloudFormation to deploy a stack that includes an Amazon EC2 instance. The administrator…
Last reviewed: Jun 20, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.