Quick Answer
The answer is Amazon Route 53. Route 53 is the correct choice because it is AWS’s DNS service, capable of resolving a custom domain like app.example.com to an internal Application Load Balancer using a private hosted zone and an alias record. This allows traffic from within the VPC to reach the ALB by name, without exposing the application to the internet. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of DNS resolution for internal resources versus content delivery or acceleration services. A common trap is confusing Route 53 with CloudFront, which handles caching and edge delivery, not DNS resolution, or with Global Accelerator, which improves performance for external traffic. Remember the key distinction: if the task is to map a domain name to an internal ALB, you need a DNS service, and that is always Route 53. Memory tip: “DNS for names, CloudFront for frames, Global Accelerator for game.”
This SOA-C02 practice question tests your understanding of networking and content delivery. 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 wants to allow its employees to access internal applications using a custom domain name (app.example.com) that resolves to an internal ALB. Which AWS service should be used?
AWS Global Accelerator
Why wrong: Global Accelerator uses anycast IPs, but Route 53 is the standard for DNS.
Application Load Balancer
Why wrong: ALB does not provide DNS resolution for custom domains.
Amazon Route 53
Route 53 provides DNS resolution for custom domains.
Amazon CloudFront
Why wrong: CloudFront is a CDN, not a DNS service.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon Route 53
Option A is correct because Route 53 is the DNS service to route traffic to internal resources. Option B is wrong because CloudFront is for content delivery, not DNS resolution. Option C is wrong because Global Accelerator improves performance but is not primarily for internal DNS. Option D is wrong because ALB does not provide DNS resolution.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Global Accelerator
Application Load Balancer
Why it's wrong here
ALB does not provide DNS resolution for custom domains.
Amazon Route 53
Why this is correct
Route 53 provides DNS resolution for custom domains.
Related concept
Read the scenario before looking for a memorised answer.
Amazon CloudFront
Why it's wrong here
CloudFront is a CDN, not a DNS service.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
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.
Networking and Content Delivery — study guide chapter
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FAQ
Networking and Content Delivery — This question tests Networking and Content Delivery — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon Route 53 — Option A is correct because Route 53 is the DNS service to route traffic to internal resources. Option B is wrong because CloudFront is for content delivery, not DNS resolution. Option C is wrong because Global Accelerator improves performance but is not primarily for internal DNS. Option D is wrong because ALB does not provide DNS resolution.
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.
Read the scenario before looking for a memorised answer.
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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.
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