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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 Mar. 24, 2026 (see below)
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?
A banking company is successfully operating its public mobile banking stack on AWS. The mobile banking stack is deployed in a VPC that includes private subnets and public subnets. The company is using IPv4 networking and has not deployed or supported IPv6 in the environment. The company has decided to adopt a third-party service provider's API and must integrate the API with the existing environment. The service provider's API requires the use of IPv6.
A network engineer must turn on IPv6 connectivity for the existing workload that is deployed in a private subnet. The company does not want to permit IPv6 traffic from the public internet and mandates that the company's servers must initiate all IPv6 connectivity. The network engineer turns on IPv6 in the VPC and in the private subnets.
Which solution will meet these requirements?
A company is planning to migrate an internal application to the AWS Cloud. The application will run on Amazon EC2 instances in one VPC. Users will access the application from the
company's on-premises data center through AWS VPN or AWS Direct Connect. Users will use private domain names for the application endpoint from a domain name that is reserved
explicitly for use in the AWS Cloud.
Each EC2 instance must have automatic failover to another EC2 instance in the same AWS account and the same VPC. A network engineer must design a DNS solution that will not expose
the application to the internet.
Which solution will meet these requirements?
The correct solution is to use a Route 53 private hosted zone and a Route 53 Resolver inbound endpoint. A private hosted zone allows you to use private domain names for your internal AWS resources without exposing them to the internet. A Route 53 Resolver inbound endpoint enables DNS queries from your on-premises network to be forwarded to your VPC. By configuring conditional forwarding on your on-premises DNS resolvers, you can ensure that only the queries for the AWS reserved domain name are sent to the inbound endpoint. In the private hosted zone, you can create primary and failover records that point to the IP addresses of the EC2 instances. These records will automatically switch to the failover instance if the primary instance becomes unhealthy. You can use CloudWatch metrics and alarms to monitor the application's health and trigger the health check for the primary endpoint.
The other options are not correct because they either expose the application to the internet or use a public hosted zone, which is not suitable for internal applications. Option A assigns public IP addresses to the EC2 instances, which makes them accessible from the internet. Option B uses a public hosted zone, which requires the EC2 instances to have public IP addresses or elastic IP addresses. Option D does not set up a health check on the alarm for the primary endpoint, which is required for the failover mechanism to work.
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