Courseiva
← SOA-C02
Full test
Question 1,460 of 1,546
Reliability and Business Continuity →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is to enable Multi-AZ deployment on the DB instance. This configuration automatically creates and maintains a synchronous standby replica in a different Availability Zone, ensuring that in the event of a database failure or AZ outage, Amazon RDS handles failover automatically with minimal downtime—typically within 60 to 120 seconds. For the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of high-availability architecture versus scaling or backup solutions. A common trap is confusing Multi-AZ with Read Replicas: Multi-AZ is for failover and disaster recovery, not for read scaling. Remember that Multi-AZ uses synchronous replication to keep the standby in lockstep, while Read Replicas use asynchronous replication for offloading reads. A helpful memory tip is “Multi-AZ for AZ outage, Read Replica for read traffic.”

SOA-C02 Reliability and Business Continuity Practice Question

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 production Amazon RDS for PostgreSQL DB instance in a single Availability Zone (AZ). The SysOps administrator needs to improve database availability so that in the event of a database failure or AZ outage, a standby instance is automatically promoted with minimal downtime. Which configuration should the administrator enable?

Question 1mediummultiple choice
Full question →

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

✓

Enable Multi-AZ deployment on the DB instance.

Multi-AZ deployment automatically creates and maintains a synchronous standby replica in a different Availability Zone. In the event of a failure or AZ outage, Amazon RDS automatically fails over to the standby, typically within 60–120 seconds, with no manual intervention required. This meets the requirement for automatic promotion with minimal downtime.

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.

  • ✗

    Enable automated backups with a retention period of 35 days.

    Why it's wrong here

    Automated backups allow point-in-time recovery but do not provide automatic failover. Restoring from a backup takes much longer than the failover provided by Multi-AZ.

  • ✗

    Create a read replica in another Availability Zone.

    Why it's wrong here

    A read replica is for offloading read traffic and does not automatically failover. You could manually promote it to a standalone instance, but that is not automatic and introduces downtime.

  • ✓

    Enable Multi-AZ deployment on the DB instance.

    Why this is correct

    Multi-AZ deployment creates a standby in a different AZ with synchronous replication. AWS handles automatic failover, ensuring high availability with minimal disruption.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Schedule manual snapshots to be taken every hour and restore from the latest snapshot when needed.

    Why it's wrong here

    Manual snapshots are for backup and disaster recovery, but restoring a snapshot is a manual process that can take significant time and result in data loss. It does not provide automatic failover.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse read replicas (which are for read scaling and require manual promotion) with Multi-AZ (which provides automatic failover), or they overestimate the speed and automation of backups and snapshots for disaster recovery.

Detailed technical explanation

How to think about this question

Multi-AZ deployments use synchronous replication to the standby instance, ensuring zero data loss (durable commit) during failover. The failover is triggered automatically by Amazon RDS when it detects a failure, such as a DB instance crash, storage failure, or AZ outage, and it updates the DNS record to point to the standby. In a real-world scenario, if the primary instance becomes unresponsive due to a hardware failure, the standby is promoted within minutes, and applications reconnect using the same endpoint, minimizing disruption.

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

An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.

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.

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.

10 questions20 questions30 questions50 questionsTimed 30
SOA-C02 practice-test guide →Study guide →Browse all practice tests

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: Enable Multi-AZ deployment on the DB instance. — Multi-AZ deployment automatically creates and maintains a synchronous standby replica in a different Availability Zone. In the event of a failure or AZ outage, Amazon RDS automatically fails over to the standby, typically within 60–120 seconds, with no manual intervention required. This meets the requirement for automatic promotion with minimal downtime.

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.

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 →

How Courseiva writes practice questions · Editorial policy

Keep practising

More SOA-C02 practice questions

Browse all SOA-C02 questions →

Last reviewed: Jun 11, 2026

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.

Loading comments…

Sign in to join the discussion.

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.