This ANS-C01 practice question tests your understanding of network implementation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is setting up a new VPC and needs to ensure that instances in the VPC can resolve DNS names within AWS (e.g., ec2-203-0-113-25.compute-1.amazonaws.com). Which TWO configurations are required? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set the VPC's 'enableDnsSupport' attribute to true
Options A and B are correct. To enable DNS resolution for private hosted zones and instance hostnames, both 'enableDnsHostnames' and 'enableDnsSupport' must be set to true. Option C is wrong because a public hosted zone is not required for private DNS resolution. Option D is wrong because the Amazon Route 53 Resolver is not needed; the VPC provides DNS resolution. Option E is wrong because a DHCP option set with domain-name-servers is not required; the default VPC DNS is provided.
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.
✓
Set the VPC's 'enableDnsSupport' attribute to true
Why this is correct
This enables DNS resolution through the Amazon DNS server.
Related concept
Read the scenario before looking for a memorised answer.
✓
Set the VPC's 'enableDnsHostnames' attribute to true
Read the scenario before looking for a memorised answer.
✗
Configure the Amazon Route 53 Resolver to forward queries to the VPC DNS
Why it's wrong here
The VPC DNS server is already available; no need for Route 53 Resolver.
✗
Create a public hosted zone in Amazon Route 53 and associate it with the VPC
Why it's wrong here
A public hosted zone is not needed for private DNS resolution.
✗
Create a custom DHCP option set with the domain-name-servers option set to the VPC DNS IP
Why it's wrong here
The default DHCP option set already provides the VPC DNS server.
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 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
Got this wrong? Here's your next step.
Identify which ANS-C01 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.
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set the VPC's 'enableDnsSupport' attribute to true — Options A and B are correct. To enable DNS resolution for private hosted zones and instance hostnames, both 'enableDnsHostnames' and 'enableDnsSupport' must be set to true. Option C is wrong because a public hosted zone is not required for private DNS resolution. Option D is wrong because the Amazon Route 53 Resolver is not needed; the VPC provides DNS resolution. Option E is wrong because a DHCP option set with domain-name-servers is not required; the default VPC DNS is provided.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 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.
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Question Discussion
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