Amazon Web Services Related Exams
ANS-C01 Exam
The ANS-C01 exam covers:
Network Design
Network Implementation
Network Management & Operations
Network Security, Compliance, and Governance
The ANS?C01 validates expertise in designing and managing complex cloud and hybrid networks, whereas Amazon Web Services MLS?C01 validates skills in building, training, and deploying machine learning solutions on AWS.
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A retail company is running its service on AWS. The company’s architecture includes Application Load Balancers (ALBs) in public subnets. The ALB target groups are configured to send traffic tobackend Amazon EC2 instances in private subnets. These backend EC2 instances can call externally hosted services over the internet by using a NAT gateway.
The company has noticed in its billing that NAT gateway usage has increased significantly. A network engineer needs to find out the source of this increased usage.
Which options can the network engineer use to investigate the traffic through the NAT gateway? (Choose two.)
An organization launched an IPv6-only web portal to support IPv6-native mobile clients. Front-end instances launch in an Amazon VPC associated with an appropriate IPv6 CIDR. The VPC IPv4 CIDR is fully utilized. A single subnet exists in each of two Availability Zones with appropriately configured IPv6 CIDR associations. Auto Scaling is properly configured, and no Elastic Load Balancing is used.
Customers say the service is unavailable during peak load times. The network engineer attempts to launch an instance manually and receives the following message: “There are not enough free addresses in subnet ‘subnet-12345677’ to satisfy the requested number of instances.”
What action will resolve the availability problem?
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.)