- A
1. Create NAT gateway in a public subnet. 2. Update route tables to point default route to NAT gateway. 3. Remove the Internet Gateway route from route tables. 4. Adjust security group rules for outbound traffic. 5. Test outbound connectivity.
This order ensures that the NAT gateway exists before routes are updated, preventing a loss of connectivity. Removing the IGW route after updating routes maintains outbound access through the NAT gateway. Security adjustments and testing finalize the migration.
- B
1. Update route tables to point default route to NAT gateway. 2. Remove the Internet Gateway route. 3. Create NAT gateway in a public subnet. 4. Adjust security group rules. 5. Test outbound connectivity.
Why wrong: Incorrect because you cannot update routes to point to a NAT gateway that does not yet exist. This would cause route update failure or point to an invalid target, breaking connectivity.
- C
1. Remove the Internet Gateway route. 2. Create NAT gateway in a public subnet. 3. Update route tables to point default route to NAT gateway. 4. Adjust security group rules. 5. Test outbound connectivity.
Why wrong: Incorrect because removing the IGW route first removes all outbound internet access until the NAT gateway is created and the new route is added, causing a temporary outage.
- D
1. Adjust security group rules. 2. Create NAT gateway. 3. Update routes. 4. Remove IGW route. 5. Test outbound connectivity.
Why wrong: Incorrect because adjusting security group rules before the NAT gateway is in place may not be effective and could allow unintended traffic. The correct order is to set up the network path first, then adjust security.
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. 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.
Order the steps to migrate a VPC from using an Internet Gateway to a NAT gateway for outbound-only internet access:
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
1. Create NAT gateway in a public subnet. 2. Update route tables to point default route to NAT gateway. 3. Remove the Internet Gateway route from route tables. 4. Adjust security group rules for outbound traffic. 5. Test outbound connectivity.
First create the NAT gateway, then update routes to use it, remove the IGW route, adjust security, and test.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
1. Create NAT gateway in a public subnet. 2. Update route tables to point default route to NAT gateway. 3. Remove the Internet Gateway route from route tables. 4. Adjust security group rules for outbound traffic. 5. Test outbound connectivity.
Why this is correct
This order ensures that the NAT gateway exists before routes are updated, preventing a loss of connectivity. Removing the IGW route after updating routes maintains outbound access through the NAT gateway. Security adjustments and testing finalize the migration.
Related concept
CIDR notation defines the prefix length.
- ✗
1. Update route tables to point default route to NAT gateway. 2. Remove the Internet Gateway route. 3. Create NAT gateway in a public subnet. 4. Adjust security group rules. 5. Test outbound connectivity.
- ✗
1. Remove the Internet Gateway route. 2. Create NAT gateway in a public subnet. 3. Update route tables to point default route to NAT gateway. 4. Adjust security group rules. 5. Test outbound connectivity.
- ✗
1. Adjust security group rules. 2. Create NAT gateway. 3. Update routes. 4. Remove IGW route. 5. Test outbound connectivity.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related ANS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
- →
Network Security, Compliance and Governance — study guide chapter
Learn the concepts, then practise the questions
- →
Network Security, Compliance and Governance 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 Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: 1. Create NAT gateway in a public subnet. 2. Update route tables to point default route to NAT gateway. 3. Remove the Internet Gateway route from route tables. 4. Adjust security group rules for outbound traffic. 5. Test outbound connectivity. — First create the NAT gateway, then update routes to use it, remove the IGW route, adjust security, and test.
What should I do if I get this ANS-C01 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related ANS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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: Jun 11, 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.