- A
Use an Application Load Balancer to distribute traffic across instances in different Availability Zones.
ALB can route traffic to multiple AZs.
- B
Create a single public subnet that spans all Availability Zones.
Why wrong: Subnets cannot span AZs; each subnet is in one AZ.
- C
Deploy NAT gateways in each Availability Zone for redundancy.
Provides high availability for outbound internet access.
- D
Create separate subnets in each Availability Zone for the application tier.
Spreading resources across AZs ensures availability.
- E
Use a single NAT gateway in one Availability Zone to reduce cost.
Why wrong: This creates a single point of failure.
Question 83 of 1,705
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. 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.
Which THREE of the following are considerations when designing a VPC with multiple Availability Zones for high availability? (Choose THREE.)
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
✓
Use an Application Load Balancer to distribute traffic across instances in different Availability Zones.
Option A is correct because an Application Load Balancer (ALB) distributes incoming traffic across multiple targets, such as EC2 instances, in different Availability Zones (AZs). By registering instances from multiple AZs with the ALB, you ensure that if one AZ becomes unavailable, the ALB can route traffic to healthy instances in another AZ, thereby maintaining high availability. This aligns with the AWS Well-Architected Framework's recommendation to deploy workloads across multiple AZs and use a load balancer to handle failover.
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.
- ✓
Use an Application Load Balancer to distribute traffic across instances in different Availability Zones.
Why this is correct
ALB can route traffic to multiple AZs.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a single public subnet that spans all Availability Zones.
Why it's wrong here
Subnets cannot span AZs; each subnet is in one AZ.
- ✓
Deploy NAT gateways in each Availability Zone for redundancy.
Why this is correct
Provides high availability for outbound internet access.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Create separate subnets in each Availability Zone for the application tier.
Why this is correct
Spreading resources across AZs ensures availability.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a single NAT gateway in one Availability Zone to reduce cost.
Why it's wrong here
This creates a single point of failure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The ANS-C01 exam often tests the misconception that a single subnet can span multiple Availability Zones, but AWS strictly requires each subnet to be confined to one AZ, and candidates may also incorrectly assume that a single NAT gateway is sufficient for high availability if they overlook the single point of failure risk.
Detailed technical explanation
How to think about this question
When designing for high availability across multiple AZs, each AZ should have its own subnets for each tier (e.g., public, private, database) to isolate failures. NAT gateways are horizontally scaled per AZ and are automatically redundant within an AZ, but they do not provide cross-AZ failover; thus, deploying one per AZ is necessary. The ALB operates at Layer 7 and performs health checks on targets, enabling it to route traffic away from unhealthy instances or entire AZs, which is critical for maintaining application availability during AZ outages.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
- →
Network Implementation — study guide chapter
Learn the concepts, then practise the questions
- →
Network Implementation practice questions
Targeted practice on this topic area only
- →
All ANS-C01 questions
1,705 questions across all exam domains
- →
AWS Certified Advanced Networking Specialty ANS-C01 study guide
Full concept coverage aligned to exam objectives
- →
ANS-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related ANS-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Network Management and Operations practice questions
Practise ANS-C01 questions linked to Network Management and Operations.
Network Security, Compliance and Governance practice questions
Practise ANS-C01 questions linked to Network Security, Compliance and Governance.
Network Design practice questions
Practise ANS-C01 questions linked to Network Design.
Network Implementation practice questions
Practise ANS-C01 questions linked to Network Implementation.
ANS-C01 fundamentals practice questions
Practise ANS-C01 questions linked to ANS-C01 fundamentals.
ANS-C01 scenario practice questions
Practise ANS-C01 questions linked to ANS-C01 scenario.
ANS-C01 troubleshooting practice questions
Practise ANS-C01 questions linked to ANS-C01 troubleshooting.
Practice this exam
Start a free ANS-C01 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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: Use an Application Load Balancer to distribute traffic across instances in different Availability Zones. — Option A is correct because an Application Load Balancer (ALB) distributes incoming traffic across multiple targets, such as EC2 instances, in different Availability Zones (AZs). By registering instances from multiple AZs with the ALB, you ensure that if one AZ becomes unavailable, the ALB can route traffic to healthy instances in another AZ, thereby maintaining high availability. This aligns with the AWS Well-Architected Framework's recommendation to deploy workloads across multiple AZs and use a load balancer to handle failover.
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.
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 →
Keep practising
More ANS-C01 practice questions
- A financial services company has a VPC with a public subnet and a private subnet. EC2 instances in the private subnet ne…
- A company is designing a network security architecture for a multi-account environment using AWS Transit Gateway. The se…
- A company is using AWS Direct Connect to connect its on-premises network to AWS. The company wants to encrypt all traffi…
- A company uses AWS Transit Gateway to connect multiple VPCs and on-premises networks via AWS Site-to-Site VPN. The secur…
- A company runs a web application on EC2 instances behind an Application Load Balancer (ALB). The application must be acc…
- A global e-commerce company uses a hub-and-spoke network topology with a transit VPC in us-east-1. Each spoke VPC has an…
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.
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.
Sign in to join the discussion.