- A
Split the client CIDR into smaller ranges for each Availability Zone.
Why wrong: Not necessary; the endpoint handles client IP assignment.
- B
Associate the Client VPN endpoint with subnets in at least two Availability Zones.
Provides redundancy if one AZ fails.
- C
Create multiple route tables for the same subnet.
Why wrong: Only one route table can be associated with a subnet.
- D
Increase the subnet CIDR size to accommodate more clients.
Why wrong: More IP addresses do not fix disconnections due to AZ failure.
Question 1,349 of 1,705
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. 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 uses AWS Client VPN for remote access. Users report intermittent disconnections. The network engineer notices that the Client VPN endpoint is associated with a single subnet. What change should be made to improve reliability?
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
✓
Associate the Client VPN endpoint with subnets in at least two Availability Zones.
Associating the Client VPN endpoint with subnets in at least two Availability Zones provides high availability for the VPN tunnel endpoints. If a single subnet (and its underlying AZ) fails or experiences network issues, the Client VPN endpoint can still route traffic through the other AZ's subnet, preventing the intermittent disconnections users are experiencing.
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.
- ✗
Split the client CIDR into smaller ranges for each Availability Zone.
Why it's wrong here
Not necessary; the endpoint handles client IP assignment.
- ✓
Associate the Client VPN endpoint with subnets in at least two Availability Zones.
Why this is correct
Provides redundancy if one AZ fails.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create multiple route tables for the same subnet.
Why it's wrong here
Only one route table can be associated with a subnet.
- ✗
Increase the subnet CIDR size to accommodate more clients.
Why it's wrong here
More IP addresses do not fix disconnections due to AZ failure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse scaling (increasing CIDR or route tables) with high availability, failing to recognize that a single subnet creates a single point of failure for the entire Client VPN endpoint.
Detailed technical explanation
How to think about this question
AWS Client VPN endpoints are provisioned with elastic network interfaces in the associated subnets. When only one subnet is used, the endpoint's underlying infrastructure is confined to a single Availability Zone. By associating subnets in two or more AZs, the endpoint can leverage cross-AZ failover; if one AZ's network path degrades, traffic automatically reroutes through the healthy AZ's subnet. This aligns with AWS best practices for building resilient VPN architectures, as the Client VPN endpoint's control plane and data plane both benefit from multi-AZ placement.
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
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.
Visual reference
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
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: Associate the Client VPN endpoint with subnets in at least two Availability Zones. — Associating the Client VPN endpoint with subnets in at least two Availability Zones provides high availability for the VPN tunnel endpoints. If a single subnet (and its underlying AZ) fails or experiences network issues, the Client VPN endpoint can still route traffic through the other AZ's subnet, preventing the intermittent disconnections users are experiencing.
What should I do if I get this ANS-C01 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
This ANS-C01 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 ANS-C01 exam.
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