- A
AWS Direct Connect connection
Why wrong: Direct Connect is for dedicated private connectivity, not internet access.
- B
Internet Gateway attached to the VPC
The NAT Gateway uses the Internet Gateway to reach the internet.
- C
Elastic IP address assigned to the NAT Gateway
Why wrong: While needed for a NAT Gateway in a public subnet, the question asks for required components; an EIP is part of NAT Gateway creation but not a separate component.
- D
Route in the private subnet's route table pointing 0.0.0.0/0 to the NAT Gateway
This directs internet-bound traffic from private instances to the NAT Gateway.
- E
NAT Gateway deployed in the public subnet
The NAT Gateway enables outbound internet for private instances.
Question 1,168 of 1,705
Private Subnet Internet Access: Required Components for NAT Gateway
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.
A company has a VPC with a public subnet and a private subnet. They want to allow instances in the private subnet to download patches from the internet. Which THREE components are required? (Select 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
✓
Internet Gateway attached to the VPC
An Internet Gateway (IGW) is required to provide a target in the VPC's route tables for internet-bound traffic. The NAT Gateway must be deployed in a public subnet and assigned an Elastic IP address so that it can route traffic through the IGW to the internet. The private subnet's route table must have a default route (0.0.0.0/0) pointing to the NAT Gateway, enabling instances in the private subnet to initiate outbound connections to the internet for patch downloads while remaining inaccessible from the internet.
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.
- ✗
AWS Direct Connect connection
Why it's wrong here
Direct Connect is for dedicated private connectivity, not internet access.
- ✓
Internet Gateway attached to the VPC
- ✗
Elastic IP address assigned to the NAT Gateway
- ✓
Route in the private subnet's route table pointing 0.0.0.0/0 to the NAT Gateway
- ✓
NAT Gateway deployed in the public subnet
Common exam traps
Common exam trap: answer the scenario, not the keyword
The ANS-C01 exam often tests the misconception that a NAT Gateway alone in a private subnet can provide internet access, but the NAT Gateway must be deployed in a public subnet with an Internet Gateway attached to the VPC and a default route pointing to the IGW in that public subnet's route table.
Detailed technical explanation
How to think about this question
The NAT Gateway uses source network address translation (SNAT) to translate the private IP addresses of instances to the Elastic IP address of the NAT Gateway when sending traffic to the internet. The IGW performs the actual routing of packets between the VPC and the internet, and it only works with resources that have a public IP or are behind a NAT device. In a real-world scenario, if the NAT Gateway is placed in a private subnet, it would fail because it cannot reach the IGW without a route to an internet gateway, which is only available in public subnets.
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
What to study next
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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: Internet Gateway attached to the VPC — An Internet Gateway (IGW) is required to provide a target in the VPC's route tables for internet-bound traffic. The NAT Gateway must be deployed in a public subnet and assigned an Elastic IP address so that it can route traffic through the IGW to the internet. The private subnet's route table must have a default route (0.0.0.0/0) pointing to the NAT Gateway, enabling instances in the private subnet to initiate outbound connections to the internet for patch downloads while remaining inaccessible from the internet.
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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