ANS-C01 Exam Details

  • Exam Code
    :ANS-C01
  • Exam Name
    :AWS Certified Advanced Networking - Specialty (ANS-C01)
  • Certification
    :Amazon Certifications
  • Vendor
    :Amazon
  • Total Questions
    :285 Q&As
  • Last Updated
    :Jul 12, 2026

Amazon ANS-C01 Online Questions & Answers

  • Question 271:

    A company uses AWS Site-to-Site VPN connections to encrypt traffic between the company's on-premises location and a single VPC. The Site-to-Site VPN connections use two 1 Gbps AWS Direct Connect connections with public VIFs. The company plans to add 15 additional VPCs in the same AWS Region.

    The company must maintain the same level of encryption that the Site-to-Site VPN connections currently provide for each connection between the on-premises location and the new VPCs. The new connections must not use public IP addresses. The bandwidth of the Site-to-Site VPN connections will remain less than the current provisioned speed.

    Which combination of steps will meet these requirements with LEAST operational overhead? (Choose three.)

    A. Create a transit gateway and a Direct Connect gateway. Associate the transit gateway with the Direct Connect gateway. Attach all the new VPCs to the transit gateway.
    B. For each new VPC, create a new Direct Connect private VIF to a Direct Connect gateway. Associate all VPCs with the Direct Connect gateway.
    C. Assign a private IP CIDR block to the transit gateway.
    D. Assign a public IP CIDR block to the transit gateway.
    E. Create a transit VIF to the Direct Connect gateway. Create a Site-to-Site VPN private IP VPN connection.Create a public VIF.
    F. Create a Site-to-Site VPN public IP VPN connection.

  • Question 272:

    A company has two on-premises data center locations. There is a company-managed router at each data center. Each data center has a dedicated AWS Direct Connect connection to a Direct Connect gateway through a private virtual interface. The router for the first location is advertising 110 routes to the Direct Connect gateway by using BGP, and the router for the second location is advertising 60 routes to the Direct Connect gateway by using BGP. The Direct Connect gateway is attached to a company VPC through a virtual private gateway. A network engineer receives reports that resources in the VPC are not reachable from various locations in either data center. The networkengineer checks the VPC route table and sees that the routes from the first data center location are not being populated into the route table.The network engineer must resolve this issue in the most operationally efficient manner.

    What should the network engineer do to meet these requirements?

    A. Remove the Direct Connect gateway, and create a new private virtual interface from each company router to the virtual private gateway of the VPC.
    B. Change the router configurations to summarize the advertised routes.
    C. Open a support ticket to increase the quota on advertised routes to the VPC route table.
    D. Create an AWS Transit Gateway. Attach the transit gateway to the VPC, and connect the Direct Connect gateway to the transit gateway.

  • Question 273:

    A company uses Amazon Route 53 to register a public domain, example.com, in an AWS account. A central services group manages the account. The company wants to create a subdomain, test.example.com, in another AWS account to

    offer name services for Amazon EC2 instances that are hosted in the account. The company does not want to migrate the parent domain to the subdomain account.

    A network engineer creates a new Route 53 hosted zone for the subdomain in the second account.

    Which combination of steps must the network engineer take to complete the task? (Choose two.)

    A. Add records for the hosts of the new subdomain to the new Route 53 hosted zone.
    B. Update the DNS service for the parent domain by adding name server (NS) records for the subdomain.
    C. Update the DNS service for the subdomain by adding name server (NS) records for the parent domain.
    D. Create an alias record from the parent domain that points to the hosted zone for the subdomain in the second account.
    E. Add a start of authority (SOA) record in the parent domain for the subdomain.

  • Question 274:

    Company A recently acquired Company B. Company A has a hybrid AWS and on-premises environment that uses a hosted AWS Direct Connect connection, a Direct Connect gateway, and a transit gateway. Company A has a transit VIF to access the resources in its production environment in the us-east-1 Region.

    Company B has applications that run across multiple VPCs in the us-west-2 Region in a single AWS account. A transit gateway connects all Company B's application VPCs. The CIDR blocks for both companies do not overlap.

    Company A needs to use the existing Direct Connect connection to access Company B's applications from the on-premises environment.

    Which solution will meet these requirements?

    A. Create a new Direct Connect gateway in the Company B account. Associate the Company B transit gateway with the new Direct Connect gateway. Create a transit VIF on the existing hosted connection for Company B.
    B. Create an association proposal from the Company B account to associate the Company B transit gateway with the Company A Direct Connect gateway. Accept the transit gateway association proposal by logging into the Company A account.
    C. Create multiple virtual private gateways. Attach the virtual private gateways to each of Company B's application VPCs. Create a hosted private VIF for each virtual private gateway.
    D. Create a new Direct Connect gateway in the Company B account. Associate the Company B transit gateway with the new Direct Connect gateway. Create a hosted private VIF for Company B.

  • Question 275:

    A network engineer needs to standardize a company's approach to centralizing and managing interface VPC endpoints for private communication with AWS services. The company uses AWS Transit Gateway for inter-VPC connectivity between AWS accounts through a hub-and-spoke model. The company's network services team must manage all Amazon Route 53 zones and interface endpoints within a shared services AWS account. The company wants to use this centralized model to provide AWS resources with access to AWS Key Management Service (AWS KMS) without sending traffic over the public internet.

    What should the network engineer do to meet these requirements?

    A. In the shared services account, create an interface endpoint for AWS KMS. Modify the interface endpoint by disabling the private DNSname. Create a private hosted zone in the shared services account with an alias record that points to the interface endpoint. Associate the private hosted zone with the spoke VPCs in each AWS account.
    B. In the shared services account, create an interface endpoint for AWS KMS. Modify the interface endpoint by disabling the private DNSname. Create a private hosted zone in each spoke AWS account with an alias record that points to the interface endpoint. Associate each private hosted zone with the shared services AWS account.
    C. In each spoke AWS account, create an interface endpoint for AWS KMS. Modify each interface endpoint by disabling the private DNSname. Create a private hosted zone in each spoke AWS account with an alias record that points to each interface endpoint. Associate each private hosted zone with the shared services AWS account.
    D. In each spoke AWS account, create an interface endpoint for AWS KMS. Modify each interface endpoint by disabling the private DNSname. Create a private hosted zone in the shared services account with an alias record that points to each interface endpoint. Associate the private hosted zone with the spoke VPCs in each AWS account.

  • Question 276:

    A company's VPC has Amazon EC2 instances that are communicating with AWS services over the public internet. The company needs to change the connectivity so that the communication does not occur over the public internet.

    The company deploys AWS PrivateLink endpoints in the VPC. After the deployment of the PrivateLink endpoints, the EC2 instances can no longer communicate at all with the required AWS services.

    Which combination of steps should a network engineer take to restore communication with the AWS services? (Choose two.)

    A. In the VPC route table, add a route that has the PrivateLink endpoints as the destination.
    B. Ensure that the enableDnsSupport attribute is set to True for the VPC. Ensure that each VPC endpoint has DNS support enabled.
    C. Ensure that the VPC endpoint policy allows communication.
    D. Create an Amazon Route 53 public hosted zone for all services.
    E. Create an Amazon Route 53 private hosted zone that includes a custom name for each service.

  • Question 277:

    A bank built a new version of its banking application in AWS using containers that content to an on-premises database over VPN connection. This application version requires users to also update their client application. The bank plans to deprecate the earlier client version. However, the company wants to keep supporting earlier clients through their on- premises version of the application to serve a small portion of the customers who haven't yet upgraded.

    What design will allow the company to serve both newer and earlier clients in the MOST efficient way?

    A. Use an Amazon Route 53 multivalue answer routing policy to route older client traffic to the on-premises application version and the rest of the traffic to the new AWS based version.
    B. Use a Classic Load Balancer for the new application. Route all traffic to the new application by using an Elastic Load Balancing (ELB) load balancer DNS. Define a user- agent-based rule on the backend servers to redirect earlier clients to the on-premises application.
    C. Use an Application Load Balancer for the new application. Register both the new and earlier applications as separate target groups and use path-based routing to route traffic based on the application version.
    D. Use an Application Load Balancer for the new application. Register both the new and earlier application backends as separate target groups. Use header-based routing to route traffic based on the application version.

  • Question 278:

    A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application Load Balancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage

    that resulted from an incorrect change to the EC2 security group.

    A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the

    change affects the connection.

    Which solution will meet these requirements?

    A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443. Publish the flow log records to a log group in Amazon CloudWatch Logs. Create a CloudWatch Logs metric filter for the log group for rejected traffic. Create an alarm to notify the network engineer.
    B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443. Publish the flow log records to a log group in Amazon CloudWatch Logs. Create a CloudWatch Logs metric filter for the log group for all traffic. Create an alarm to notify the network engineer
    C. Create a VPC Reachability Analyzer path on port 443. Specify the security group as the source. Specify the EC2 instances as the destination. Create an Amazon Simple Notification Service (Amazon SNS) topic to notify the network engineer when a change to the security group affects the connection. Create an AWS Lambda function to start Reachability Analyzer and to publish a message to the SNS topic in case the analyses fail Create an Amazon EventBridge (Amazon CloudWatch Events) rule to invoke the Lambda function when a change to the security group occurs.
    D. Create a VPC Reachability Analyzer path on port 443. Specify the internet gateway of the VPC as the source. Specify the EC2 instances as the destination. Create an Amazon Simple Notification Service (Amazon SNS) topic to notify the network engineer when a change to the security group affects the connection. Create an AWS Lambda function to start Reachability Analyzer and to publish a message to the SNS topic in case the analyses fail. Create an Amazon EventBridge (Amazon CloudWatch Events) rule to invoke the Lambda function when a change to the security group occurs.

  • Question 279:

    A company's data center is connected to a single AWS Region by an AWS Direct Connect dedicated connection. The company has a single VPC in the Region. The company stores logs for all its applications locally in the data center.

    The company must keep all application logs for 7 years. The company decides to copy all application logs to an Amazon S3 bucket.

    Which solution will meet these requirements?

    A. Create a public VIF on the Direct Connect connection. Create an Amazon S3 gateway endpoint in the VPC.
    B. Create a private VIF on the Direct Connect connection. Create an Amazon S3 gateway endpoint in the VPC.
    C. Create a private VIF on the Direct Connect connection. Create an Amazon S3 interface endpoint in the VPC.
    D. Create a public VIF on the Direct Connect connection. Create an Amazon S3 interface endpoint in the VPC.

  • Question 280:

    An Australian ecommerce company hosts all of its services in the AWS Cloud and wants to expand its customer base to the United States (US). The company is targeting the western US for the expansion.

    The company’s existing AWS architecture consists of four AWS accounts with multiple VPCs deployed in the ap-southeast-2 Region. All VPCs are attached to a transit gateway in ap-southeast-2. There are dedicated VPCs for each

    application service. The company also has VPCs for centralized security features such as proxies, firewalls, and logging.

    The company plans to duplicate the infrastructure from ap-southeast-2 to the us-west-1 Region. A network engineer must establish connectivity between the various applications in the two Regions. The solution must maximize bandwidth,

    minimize latency and minimize operational overhead.

    Which solution will meet these requirements?

    A. Create VPN attachments between the two transit gateways. Configure the VPN attachments to use BGP routing between the two transit gateways.
    B. Peer the transit gateways in each Region. Configure routing between the two transit gateways for each Region's IP addresses.
    C. Create a VPN server in a VPC in each Region. Update the routing to point to the VPN servers for the IP addresses in alternate Regions.
    D. Attach the VPCs in us-west-1 to the transit gateway in ap-southeast-2.

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