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
    :May 24, 2026

Amazon ANS-C01 Online Questions & Answers

  • Question 181:

    A company has two AWS Direct Connect connections between Direct Connect locations and the company's on-premises environment in the US. The company uses the connections to communicate with AWS workloads that run in the useast-1 Region. Thecompany has a transit gateway that connects several VPCs. The Direct Connect connections terminate at a Direct Connect gateway and the transit VIFs to the transit gateway.

    The company recently acquired a smaller company that is based in Europe. The newly acquired company has only on-premises workloads. The newly acquired company does not expect to run workloads on AWS for the next 3 years. However, the newly acquired company requires connectivity to the parent company's AWS resources in us-east-1 and to the parent company's on-premises environment in the US. The parent company wants to use two new Direct Connect connections in Europe to provide the required connectivity.

    Which solution will meet these requirements with the LEAST operational overhead for the newly acquired company?

    A. Associate new transit VIFs to the existing Direct Connect gateway. Configure the new transit VIFs to use Direct Connect SiteLink.
    B. Associate new transit VIFs to a new Direct Connect gateway and to a new transit gateway in the eu-west-1 Region. Use transit gateway peering to connect the transit gateways.
    C. Associate new private VIFs to the existing Direct Connect gateway. Configure the existing transit VIFs and the new private VIFs to use Direct Connect SiteLink.
    D. Associate new private VIFs to a new Direct Connect gateway and to a new VPC in us- east-1. Configure the existing transit VIFs and the new private VIFs to use Direct Connect SiteLink and AWS PrivateLink endpoints in the new VPC.

  • Question 182:

    A company hosts application servers on premises and on Amazon EC2 instances in a VPC. The application servers access data that is hosted in an Amazon S3 bucket through the public internet. The EC2 instances in the VPC use an AWS Site-to-Site VPN for connectivity with the on-premises application servers.

    New company regulations state that all traffic between the application servers and the S3 bucket must remain private and must not use public IP addresses.

    Which solution will meet these requirements MOST cost-effectively?

    A. Configure an S3 gateway endpoint Modify the route table with the appropriate route for the endpoint. Access the S3 bucket through the gateway endpoint from the EC2 instances.
    B. Configure an S3 interface endpoint. Update the on-premises servers and EC2 instances to use the interface endpoint DNS name to access the S3 bucket.
    C. Configure an S3 interface endpoint. Update the on-premises servers to use the interface endpoint DNS name to access the S3 bucket. Configure an S3 gateway endpoint. Modify the route table so that the EC2 instances use the gateway endpoint.
    D. Configure an S3 gateway endpoint. Modify the route table with the appropriate route for the endpoint. Use an S3 bucket policy to restrict access to the gateway endpoint. Configure a proxy server fleet behind a Network Load Balancer in the VPC so that the on-premises servers can access the S3 bucket.

  • Question 183:

    A company is using an AWS Site-to-Site VPN connection from the company's on-premises data center to a virtual private gateway in the AWS Cloud Because of congestion, the company is experiencing availability and performance issues as traffic travels across the internet before the traffic reaches AWS. A network engineer must reduce these issues for the connection as quickly as possible with minimum administration effort.

    Which solution will meet these requirements?

    A. Edit the existing Site-to-Site VPN connection by enabling acceleration. Stop and start the VPN service on the customer gateway for the new setting to take effect.
    B. Configure a transit gateway in the same AWS Region as the existing virtual private gateway. Create a new accelerated Site-to-Site VPN connection. Connect the new connection to the transit gateway by using a VPN attachment. Update the customer gateway device to use the new Site to Site VPN connection. Delete the existing Site-to-Site VPN connection
    C. Create a new accelerated Site-to-Site VPN connection. Connect the new Site-to-Site VPN connection to the existing virtual private gateway. Update the customer gateway device to use the new Site-to-Site VPN connection. Delete the existing Site-to-Site VPN connection.
    D. Create a new AWS Direct Connect connection with a private VIF between the on-premises data center and the AWS Cloud. Update the customer gateway device to use the new Direct Connect connection. Delete the existing Site-to-Site VPN connection.

  • Question 184:

    An ecommerce company is hosting a web application on Amazon EC2 instances to handle continuously changing customer demand. The EC2 instances are part of an Auto Scaling group. The company wants to implement a solution to distribute traffic from customers to the EC2 instances. The company must encrypt all traffic at all stages between the customers and the application servers. No decryption atintermediate points is allowed.

    Which solution will meet these requirements?

    A. Create an Application Load Balancer (ALB). Add an HTTPS listener to the ALB. Configure the Auto Scaling group to register instances with the ALB's target group.
    B. Create an Amazon CloudFront distribution. Configure the distribution with a custom SSL/TLS certificate. Set the Auto Scaling group asthe distribution's origin.
    C. Create a Network Load Balancer (NLB). Add a TCP listener to the NLB. Configure the Auto Scaling group to register instances with the NLB's target group.
    D. Create a Gateway Load Balancer (GLB). Configure the Auto Scaling group to register instances with the GLB's target group.

  • Question 185:

    A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B. A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.

    What should a network engineer do to fix this issue with the LEAST management overhead?

    A. In the shared VPC, replace the VPC attachment with a VPN attachment. Create a VPN tunnel between the transit gateway and the firewall appliance. Configure BGP.
    B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC B.
    C. Enable transit gateway appliance mode on the VPC attachment in the shared VPC.
    D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B.

  • Question 186:

    A company uses a hybrid architecture and has an AWS Direct Connect connection between its on-premises data center and AWS. The company has production applications that run in the on-premises data center. The company also has production applications that run in a VPC. The applications that run in the on-premises data center need to communicate with the applications that run in the VPC. The company is using corp.example.com as the domain name for the on-premises resources and is using an Amazon Route 53 private hosted zone for aws.example.com to host the VPC resources. The company is using an open-source recursive DNS resolver in a VPC subnet and is using a DNS resolver in the on-premises data center. The company's on-premises DNS resolver has a forwarder that directs requests for the aws.example.com domain name to the DNS resolver in the VPC. The DNS resolver in the VPC has a forwarder that directs requests for the corp.example.com domain name to the DNS resolver in the on-premises data center. The company has deckled to replace the open-source recursive DNS resolver with Amazon Route 53 Resolver endpoints.

    Which combination of steps should a network engineer take to make this replacement? (Choose three.)

    A. Create a Route 53 Resolver rule to forward aws.example.com domain queries to the IP addresses of the outbound endpoint.
    B. Configure the on-premises DNS resolver to forward aws.example.com domain queries to the IP addresses of the inbound endpoint.
    C. Create a Route 53 Resolver inbound endpoint and a Route 53 Resolver outbound endpoint.
    D. Create a Route 53 Resolver rule to forward aws.example.com domain queries to the IP addresses of the inbound endpoint.
    E. Create a Route 53 Resolver rule to forward corp.example.com domain queries to the IP address of the on-premises DNS resolver.
    F. Configure the on-premises DNS resolver to forward aws.example.com queries to the IP addresses of the outbound endpoint.

  • Question 187:

    A company has a transit gateway in AWS Account A. The company uses AWS Resource Access Manager (AWS RAM) to share the transit gateway so that users in other accounts can connect to multiple VPCs in the same AWS Region. AWS Account B contains a VPC (10.0.0.0/16) with subnet 10.0.0.0/24 in the us-west-2a Availability Zone and subnet 10.0.1.0/24 in the us-west-2b Availability Zone. Resources in these subnets can communicate with other VPCs.

    A network engineer creates two new subnets: 10.0.2.0/24 in the us-west-2b Availability Zone and 10.0.3.0/24 in the us-west-2c Availability Zone. All the subnets share one route table. The default route 0.0.0.0/0 is pointing to the transit gateway. Resources in subnet 10.0.2.0/24 can communicate with other VPCs, but resources in subnet 10.0.3.0/24 cannot communicate with other VPCs.

    What should the network engineer do so that resources in subnet 10.0.3.0/24 can communicate with other VPCs?

    A. In Account B, add 10.0.2.0/24 and 10.0.3.0/24 as the destinations to the route table. Use the transit gateway as the target.
    B. In Account B, update the transit gateway attachment. Attach the new subnet ID that is associated with us-west-2c to Account B's VPC.
    C. In Account A, create a static route for 10.0.3.0/24 in the transit gateway route tables.
    D. In Account A, recreate propagation for 10.0.0.0/16 in the transit gateway route tables.

  • Question 188:

    A company has an application VPC and a networking VPC that are connected through VPC peering. The networking VPC contains a Network Load Balancer (NLB). The application VPC contains Amazon EC2 instances that run an application. The EC2 instances are part of a target group that is associated with the NLB in the networking VPC.

    The company configures a third VPC and peers it to the networking VPC. The new VPC contains a new version of the existing application. The new version of the application runs on new EC2 instances in an application subnet. The new version of the application runs in a different Availability Zone than that original version of the application. The company needs to establish connectivity between the NLB and the new version of the application.

    Which combination of steps will meet this requirement? (Choose three.)

    A. Register the new application EC2 instances with the NLB by using the instance IDs.
    B. Register the new application EC2 instances with the NLB by using instance IP addresses.
    C. Configure the NLB in the Availability Zone where the new application EC2 instances run.
    D. Configure the NLB to use zonal shift.
    E. Configure the network ACL for the application subnet in the new VPC to allow outbound connections.
    F. Configure the network ACL for the application subnet in the new VPC to allow inbound connections and outbound connections.

  • Question 189:

    A company uses an AWS Direct Connect private VIF with a link aggregation group (LAG) that consists of two 10 Gbps connections. The company's security team has implemented a new requirement for external network connections to provide layer 2 encryption. The company's network team plans to use MACsec support for Direct Connect to meet the new requirement.

    Which combination of steps should the network team take to implement this functionality? (Choose three.)

    A. Create a new Direct Connect LAG with new circuits and ports that support MACsec.
    B. Associate the MACsec Connectivity Association Key (CAK) and the Connection Key Name (CKN) with the new LAG.
    C. Associate the Internet Key Exchange (IKE) with the existing LAG.
    D. Configure the MACsec encryption mode on the existing LAG.
    E. Configure the MACsec encryption mode on the new LAG.
    F. Configure the MACsec encryption mode on each Direct Connect connection that makes up the existing LAG.

  • Question 190:

    A company uses transit gateways to route traffic between the company's VPCs. Each transit gateway has a single route table. Each route table contains attachments and routes for the VPCs that are in the same AWS Region as the transit

    gateway. The route tables in each VPC also contain routes to all the other VPC CIDR ranges that are available through the transit gateways. Some VPCs route to local NAT gateways.

    The company plans to add many new VPCs soon. A network engineer needs a solution to add new VPC CIDR ranges to the route tables in each VPC.

    Which solution will meet these requirements in the MOST operationally efficient way?

    A. Create a new customer-managed prefix list. Add all VPC CIDR ranges to the new prefix list. Update the route tables in each VPC to use the new prefix list ID as the destination and the appropriate transit gateway ID as the target.
    B. Turn on default route table propagation for the transit gateway route tables. Turn on route propagation for each route table in each VPC.
    C. Update the route tables in each VPC to use 0.0.0.010 as the destination and the appropriate transit gateway ID as the target.
    D. Turn on default route table association for the transit gateway route tables. Turn on route propagation for each route table in each VPC.

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