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Amazon Web Services ANS-C01 Exam With Confidence Using Practice Dumps

Exam Code:
ANS-C01
Exam Name:
Amazon AWS Certified Advanced Networking - Specialty
Certification:
AWS Certified Specialty
Vendor:
Amazon Web Services
Questions:
290
Last Updated:
Apr 18, 2026
Exam Status:
Stable
Amazon Web Services ANS-C01

ANS-C01: AWS Certified Specialty Exam 2025 Study Guide Pdf and Test Engine

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Amazon AWS Certified Advanced Networking - Specialty Questions and Answers

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Question 1

A company has an AWS Site-to-Site VPN connection between its existing VPC and on-premises network. The default DHCP options set is associated with the VPC. The company has an application that is running on an Amazon Linux 2 Amazon EC2 instance in the VPC. The application must retrieve an Amazon RDS database secret that is stored in AWS Secrets Manager through a private VPC endpoint. An on-premises application provides internal RESTful API service that can be reached by URL Two on-premises Windows DNS servers provide internal DNS resolution.

The application on the EC2 instance needs to call the internal API service that is deployed in the on-premises environment. When the application on the EC2 instance attempts to call the internal API service by referring to the hostname that is assigned to the service, the call fails. When a network engineer tests the API service call from the same EC2 instance by using the API service's IP address, the call is successful.

What should the network engineer do to resolve this issue and prevent the same problem from affecting other resources in the VPC?

Options:

A.

Create a new DHCP options set that specifies the on-premises Windows DNS servers. Associate the new DHCP options set with the existing VPC. Reboot the Amazon Linux 2 EC2 instance.

B.

Create an Amazon Route 53 Resolver rule. Associate the rule with the VPC. Configure the rule to forward DNS queries to the on-premises Windows DNS servers if the domain name matches example.internal.

C.

Modify the local host file in the Amazon Linux 2 EC2 instance in the VPMap the service domain name (api.example.internal) to the IP address of the internal API service.

D.

Modify the local /etc/resolv.conf file in the Amazon Linux 2 EC2 instance in the VPC. Change the IP addresses of the name servers in the file to the IP addresses of the company's on-premisesWindows DNS servers.

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Question 2

A company runs an application on Amazon EC2 instances. A network engineer implements a NAT gateway in the application's VPC to replace self-managed NAT instances. After the network engineer shifts traffic from the self-managed NAT instances to the NAT gateway, users begin to report issues.

During troubleshooting, the network engineer discovers that the connection to the application is closing after approximately 6 minutes of inactivity.

What should the network engineer do to resolve this issue?

Options:

A.

Check for increases in the Amazon CloudWatch IdleTimeoutCount metric for the NAT gateway. Configure TCP keepalive on the application EC2 instances.

B.

Check for increases in the Amazon CloudWatch ErrorPortAIlocation metric for the NAT gateway. Configure an HTTP timeout value on the application EC2 instances.

C.

Check for increases in the Amazon CloudWatch PacketsDropCount metric for the NAT gateway. Configure an HTTPS timeout value on the application EC2 instances.

D.

Check for decreases in the Amazon CloudWatch ActiveConnectionCount metric for the NAT gateway. Configure UDP keepalive on the application EC2 instances.

Question 3

A development team is building a new web application in the AWS Cloud. The main company domain, example.com. is currently hosted in an Amazon Route 53 public hosted zone in one of the company's production AWS accounts.

The developers want to test the web application in the company's staging AWS account by using publicly resolvable subdomains under the example.com domain with the ability to create and delete DNS records as needed. Developers have full access to Route 53 hosted zones within the staging account, but they are prohibited from accessing resources in any of the production AWS accounts.

Which combination of steps should a network engineer take to allow the developers to create records under the example.com domain? (Select TWO.)

Options:

A.

Create a public hosted zone for example.com in the staging account.

B.

Create a staging.example.com NS record in the example.com domain. Populate the value with the name servers from the staging.example.com domain. Set the routing policy type to simple routing.

C.

Create a private hosted zone for stagmg.example.com in the staging account.

D.

Create an example.com NS record in the staging.example.com domain. Populate the value with the name servers from the example.com domain. Set the routing policy type to simple routing

E.

Create a public hosted zone for staging.example.com in the staging account.

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