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A company has an AWS account with four VPCs in the us-east-1 Region. The VPCs consist of a development VPC and three production VPCs that host various workloads.
The company has extended its on-premises data center to AWS with AWS Direct Connect by using a Direct Connect gateway. The company now wants to establish connectivity to its production VPCs and development VPC from on premises. The production VPCs are allowed to route data to each other. However, the development VPC must be isolated from the production VPCs. No data can flow between the development VPC and the production VPCs.
In preparation to implement this solution, a network engineer creates a transit gateway with a single transit gateway route table. Default route table association and default route table propagation are turned off. The network engineer attaches the production VPCs. the development VPC. and the Direct Connect gateway to the transit gateway. For each VPC route table, the network engineer adds a route to 0.0.0.0/0 with the transit gateway as the next destination.
Which combination of steps should the network engineer take next to complete this solution? (Select THREE.)
A company needs to capture and log traffic for Nitro-based Amazon EC2 instances to comply with regulations. The company's network team has prepared a solution that enables VPC traffic mirroring and sends traffic to a second set of EC2 instances in an Auto Scaling group.
The network team has added a Network Load Balancer (NLB) in front of the EC2 instances the traffic will be sent to. However, the solution does not send any mirrored traffic to the EC2 instances that are behind the NLB.
How should the network team configure traffic mirroring to use the NLB endpoint?
Traffic Mirroring with UDP: VPC traffic mirroring sends mirrored traffic as UDP packets encapsulated in VXLAN (Virtual eXtensible Local Area Network). Therefore, the target for traffic mirroring must have a UDP listener to accept the mirrored traffic.
NLB as a Target: The Network Load Balancer (NLB) can be configured as the target for traffic mirroring. By setting up a UDP listener on the NLB, it can properly receive the VXLAN-encapsulated mirrored traffic and forward it to the EC2 instances behind it.
Correct Listener Protocol: Since mirrored traffic uses UDP, setting up a TCP listener or using both TCP and UDP listeners will not work. Only a UDP listener can correctly handle the traffic.
A media company is implementing a news website for a global audience. The website uses Amazon CloudFront as its content delivery network. The backend runs on Amazon EC2 Windows instances behind an Application Load Balancer (ALB). The instances are part of an Auto Scaling group. The company's customers access the website by using service example com as the CloudFront custom domain name. The CloudFront origin points to an ALB that uses service-alb.example.com as the domain name.
The company's security policy requires the traffic to be encrypted in transit at all times between the users and the backend.
Which combination of changes must the company make to meet this security requirement? (Choose three.)
A company has deployed a web application on AWS. The web application uses an Application Load Balancer (ALB) across multiple Availability Zones. The targets of the ALB are AWS Lambda functions. The web application also uses Amazon CloudWatch metrics for monitoring.
Users report that parts of the web application are not loading properly. A network engineer needs to troubleshoot the problem. The network engineer enables access logging for the ALB.
What should the network engineer do next to determine which errors the ALB is receiving?
A company is using a shared services VPC with two domain controllers. The domain controllers are deployed in the company's private subnets. The company is deploying a new application into a new VPC in the account. The application will be deployed onto an Amazon EC2 for Windows Server instance in the new VPC. The instance must join the existing Windows domain that is supported by the domain controllers in the shared services VPC.
A transit gateway is attached to both the shared services VPC and the new VPC. The company has updated the route tables for the transit gateway, the shared services VPC, and the new VPC. The security groups for the domain controllers and the instance are updated and allow traffic only on the ports that are necessary for domain operations. The instance is unable to join the domain that is hosted on the domain controllers.
Which combination of actions will help identify the cause of this issue with the LEAST operational overhead? (Choose two.)
