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Amazon ANS-C01 Exam Questions
- Topic 1: Network Design: The topic equips AWS networking specialists with the expertise to architect robust and optimized networking solutions. This involves designing edge network services to enhance user performance globally, integrating DNS solutions for public, private, and hybrid setups, and embedding load balancing for high availability, scalability, and security. It also addresses defining logging and monitoring strategies and creating routing frameworks between on-premises systems and the AWS Cloud, as well as across multiple AWS accounts, Regions, and VPCs.
- Topic 2: Network Implementation: It assesses the ability of AWS networking specialists to configure and deploy network architectures effectively. This includes implementing routing between on-premises systems and AWS, establishing connectivity across multiple AWS accounts, Regions, and VPCs, and configuring complex hybrid DNS setups.
- Topic 3: Network Management and Operation: The Network Management and Operation topic evaluates the capability to maintain and optimize AWS and hybrid networks. It focuses on monitoring and analyzing network traffic for troubleshooting, maintaining routing, and ensuring connectivity. This topic challenges the AWS networking specialist to demonstrate proficiency in operational excellence and performance tuning.
- Topic 4: Network Security, Compliance, and Governance: The Network Security, Compliance, and Governance topic ensures AWS networking specialists can secure and govern their network environments. It involves implementing features to meet compliance and security needs, validating security through monitoring and logging services, and maintaining data confidentiality and communication integrity.
Free Amazon ANS-C01 Exam Actual Questions
Note: Premium Questions for ANS-C01 were last updated On Apr. 17, 2026 (see below)
A company has its production VPC (VPC-A) in the eu-west-1 Region in Account 1. VPC-A is attached to a transit gateway (TGW-A) that is connected to an on-premises data center in Dublin, Ireland, by an AWS Direct Connect transit VIF that is configured for an AWS Direct Connect gateway. The company also has a staging VPC (VPC-B) that is attached to another transit gateway (TGW-B) in the eu-west-2 Region in Account 2.
A network engineer must implement connectivity between VPC-B and the on-premises data center in Dublin.
Which solutions will meet these requirements? (Choose two.)
B . Associate TGW-B with the Direct Connect gateway. Advertise the VPC-B CIDR block under the allowed prefixes. This will allow traffic from VPC-B to be sent over the Direct Connect connection to the on-premises data center via TGW-B. C. Configure another transit VIF on the Direct Connect connection and associate TGW-B. Advertise the VPC-B CIDR block under the allowed prefixes. This will enable the use of the Direct Connect connection for VPC-B's traffic by connecting TGW-B to the Direct Connect gateway.
A company runs applications in two VPCs that are in separate AWS Regions. One VPC is in the us-east-1 Region. The second VPC is in the us-west-1 Region. The company needs to establish connectivity between the two VPCs. The company also needs to connect the VPCs to applications that run in an on-premises data center.
The current traffic requirement between the VPCs is 50 per month. The company expects traffic volume between the VPCs to increase. The traffic requirement from the VPCs to the on-premises data center is 10 per month. The company expects the traffic between the VPCs and the data center to remain constant.
Which solution will meet these requirements MOST cost-effectively?
Traffic Volume Consideration: The traffic volume between the VPCs (50 TB per month and increasing) justifies the use of transit gateways, which are designed for scalable, high-throughput interconnectivity. A VPC peering connection would not scale as efficiently for this traffic volume.
On-Premises Connectivity: Establishing VPN connections from the on-premises firewall to the transit gateways ensures secure connectivity between the on-premises data center and both VPCs.
Transit Gateway Peering: Creating a peering connection between the transit gateways allows for efficient inter-Region communication between the VPCs without routing through the on-premises data center, reducing latency and costs.
Cost Efficiency: Transit gateway peering provides a cost-effective solution for large inter-Region traffic volumes compared to alternatives like routing all traffic through the on-premises data center, which would incur higher egress costs and potentially create a bottleneck.
A company has an AWS Site-to-Site VPN connection between AWS and its branch office. A network engineer is troubleshooting connectivity issues that the connection is experiencing. The VPN connection terminates at a transit gateway and is statically routed. In the transit gateway route table, there are several static route entries that target specific subnets at the branch office.
The network engineer determines that the root cause of the issues was the expansion of underlying subnet ranges in the branch office during routine maintenance.
Which solution will solve this problem with the LEAST administrative overhead for future expansion efforts?
An online retail company is running a web application in the us-west-2 Region and serves consumers in the United States. The company plans to expand across several countries in Europe and wants to provide low latency for all its users.
The application needs to identify the users' IP addresses and provide localized content based on the users' geographic location. The application uses HTTP GET and POST methods for its functionality. The company also needs to develop a failover mechanism that works for GET and POST methods and is based on health checks. The failover must occur in less than 1 minute for all clients.
Which solution will meet these requirements?
A company is using Amazon Route 53 Resolver DNS Firewall in a VPC to block all domains except domains that are on an approved list. The company is concerned that if DNS Firewall is unresponsive, resources in the VPC might be affected if the network cannot resolve any DNS queries. To maintain application service level agreements, the company needs DNS queries to continue to resolve even if Route 53 Resolver does not receive a response from DNS Firewall.
Which change should a network engineer implement to meet these requirements?
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