← SOA-C02·Amazon Web Services

Question 1,377 of 1,546

Deployment, Provisioning, and Automation →hardMultiple ChoiceObjective-mapped

Quick Answer

The answer is to configure the Auto Scaling group to launch instances across multiple Availability Zones and configure the ALB to route traffic to healthy targets. This design works because distributing the Auto Scaling group across multiple AZs ensures that if one Availability Zone fails due to a regional outage, the ASG can automatically launch replacement instances in the remaining healthy AZs, while the ALB continuously performs health checks and routes traffic only to healthy targets. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of high-availability architecture versus disaster recovery—a common trap is confusing Multi-AZ resilience with multi-region failover, which is often over-engineered and costly for this use case. Remember that Multi-AZ Auto Scaling for regional outage recovery is about fault tolerance within a region, not cross-region replication. A useful memory tip: “AZs for resilience, Regions for recovery”—if the question says “regional outage,” think AZ distribution first, not a second region.

SOA-C02 Deployment, Provisioning, and Automation Practice Question

This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. 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 production workload on a fleet of EC2 instances managed by an Auto Scaling group. The instances are behind an Application Load Balancer (ALB). Recently, the company experienced a regional outage that caused all instances to become unhealthy. The SysOps administrator must design a solution to automatically recover from such an outage with minimal downtime. The solution must be cost-effective and not require manual intervention. The administrator considers four options. Which option meets the requirements?

Question 1hardmultiple choice

Full question →

A
Configure the Auto Scaling group to launch instances across multiple Availability Zones and configure the ALB to route traffic to healthy targets.
Multi-AZ automatically handles AZ failure.
B
Increase the desired capacity of the Auto Scaling group and use larger instance types to absorb the load during failover.
Why wrong: This does not address AZ failure.
C
Create a warm standby environment in another AWS Region with a smaller Auto Scaling group. Use Route53 failover routing to switch traffic.
Why wrong: Warm standby is costly and requires manual promotion steps.
D
Use AWS Lambda to periodically check the health of instances and automatically relaunch failed instances in another region.
Why wrong: Lambda-based scripts are less reliable than native Auto Scaling features.

Full breakdown with real-world context →

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

✓

Configure the Auto Scaling group to launch instances across multiple Availability Zones and configure the ALB to route traffic to healthy targets.

Option C is correct because using an Auto Scaling group across multiple Availability Zones ensures that if one AZ fails, the ASG can launch instances in other AZs, and the ALB will route traffic to healthy instances. Option A is wrong because a warm standby in another region can be costly and may not be fully automated. Option B is wrong because increasing instance size does not provide AZ failover. Option D is wrong because manual scripts introduce single points of failure and latency.

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.

✓
Configure the Auto Scaling group to launch instances across multiple Availability Zones and configure the ALB to route traffic to healthy targets.
Why this is correct
Multi-AZ automatically handles AZ failure.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase the desired capacity of the Auto Scaling group and use larger instance types to absorb the load during failover.
Why it's wrong here
This does not address AZ failure.
✗
Create a warm standby environment in another AWS Region with a smaller Auto Scaling group. Use Route53 failover routing to switch traffic.
Why it's wrong here
Warm standby is costly and requires manual promotion steps.
✗
Use AWS Lambda to periodically check the health of instances and automatically relaunch failed instances in another region.
Why it's wrong here
Lambda-based scripts are less reliable than native Auto Scaling features.

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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.

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.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Configure the Auto Scaling group to launch instances across multiple Availability Zones and configure the ALB to route traffic to healthy targets. — Option C is correct because using an Auto Scaling group across multiple Availability Zones ensures that if one AZ fails, the ASG can launch instances in other AZs, and the ALB will route traffic to healthy instances. Option A is wrong because a warm standby in another region can be costly and may not be fully automated. Option B is wrong because increasing instance size does not provide AZ failover. Option D is wrong because manual scripts introduce single points of failure and latency.

What should I do if I get this SOA-C02 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.