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Reliability and Business Continuity →hardMultiple ChoiceObjective-mapped

SOA-C02 Reliability and Business Continuity Practice Question

This SOA-C02 practice question tests your understanding of reliability and business continuity. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 uses Amazon Route 53 for DNS and wants to ensure that its web application is highly available across two AWS Regions. The application runs behind an Application Load Balancer in each Region. Which routing policy should be used?

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

✓

Failover routing policy

The failover routing policy in Amazon Route 53 is designed to route traffic to a primary resource (e.g., an Application Load Balancer in one AWS Region) and automatically redirect to a secondary resource (e.g., an ALB in another Region) if the primary becomes unhealthy. This ensures high availability across two Regions by using health checks to detect failures and perform DNS failover, which directly meets the requirement for multi-Region redundancy.

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.

  • ✗

    Weighted routing policy

    Why it's wrong here

    Incorrect: Weighted routing is for distributing load, not for failover.

  • ✓

    Failover routing policy

    Why this is correct

    Correct: Failover routing policy is designed for active-passive failover using health checks.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Geolocation routing policy

    Why it's wrong here

    Incorrect: Geolocation routing is based on user location, not for failover.

  • ✗

    Latency routing policy

    Why it's wrong here

    Incorrect: Latency routing is for performance, not for failover.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse latency routing with failover routing, assuming that routing to the lowest-latency Region automatically provides high availability, but latency routing does not include health checks and can still direct traffic to an unhealthy Region if it remains the fastest.

Detailed technical explanation

How to think about this question

Under the hood, Route 53 failover routing uses DNS-level health checks that evaluate the health of the primary endpoint (e.g., ALB) via HTTP/HTTPS or TCP checks. When the health check fails, Route 53 removes the primary DNS record from responses and returns only the secondary record's IP, with a TTL typically set low (e.g., 60 seconds) to speed up propagation. In a real-world scenario, this policy is often combined with an active-passive architecture where the secondary Region remains idle until failover, and Route 53's health check interval (default 30 seconds) and failure threshold (default 3) determine the failover timing.

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.

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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: Failover routing policy — The failover routing policy in Amazon Route 53 is designed to route traffic to a primary resource (e.g., an Application Load Balancer in one AWS Region) and automatically redirect to a secondary resource (e.g., an ALB in another Region) if the primary becomes unhealthy. This ensures high availability across two Regions by using health checks to detect failures and perform DNS failover, which directly meets the requirement for multi-Region redundancy.

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.

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Last reviewed: Jul 4, 2026

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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.