ANS-C01 — questions

A company has started using AWS Cloud WAN with one edge location in the us-east-1 Region. The company has a production segment and a security segment in AWS Cloud WAN. The company also has a default core network policy. The company has created a production VPC for the production workload. The company has created an outbound inspection VPC to inspect internet-bound traffic from the production VPC. The company has attached the production VPC to the production segment and has attached the outbound inspection VPC to the security segment. The company has also created an AWS Network Firewall firewall in the outbound inspection VPC to inspect internet-based traffic. The company has updated a route table for the production VPC to send all internet-bound traffic to the AWS Cloud WAN core network. The company has updated a route table for the outbound inspection VPC to ensure that Network Firewall inspects any outgoing traffic and incoming traffic. During testing, an Amazon EC2 instance in the production VPC cannot reach the internet. The company checks the Network Firewall rules and confirms that the rules are not blocking the traffic. Which combination of steps will meet these requirements? (Choose two.)

A company has two business units (BUs). The company operates in the us-east-1 Region and the us-west-1 Region. The company plans to extend to more Regions in the future. Each BU has a VPC in each Region. Each Region has a transit gateway with the BU VPCs attached. The transit gateways in both Regions are peered. The company will create several more BUs in the future and will need to isolate some of the BUs from the other BUs. The company wants to migrate to an architecture to incorporate more Regions and BUs. Which solution will meet these requirements with the MOST operational efficiency?

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 education agency is preparing for its annual competition between schools. In the competition, students at schools from around the country solve math problems, complete puzzles, and write essays. The IP addressing plan of all the schools is well-known and is administered centrally. The competition is hosted in the AWS Cloud and is not publicly available. All competition traffic must be encrypted in transit. Only authorized endpoints can access the competition. All the schools have firewall policies that block ICMP traffic. A network engineer builds a solution in which all the schools access the competition through AWS Site-to-Site VPN connections. The network engineer uses BGP as the routing protocol. The network engineer must implement a solution that notifies schools when they lose connectivity and need to take action on their premises to address the issue. Which combination of steps will meet these requirements MOST cost-effectively? (Choose two.)

A company securely connects resources that are in its VPC to a software as a service (SaaS) solution from a SaaS provider. The SaaS solution is hosted in the AWS Cloud and is powered by AWS PrivateLink. The company uses a PrivateLink endpoint to access the SaaS solution behind the SaaS provider's Network Load Balancer (NLB). The company recently added a new Availability Zone and new subnets to its VPC. A network engineer is unable to deploy a new interface VPC endpoint for the SaaS solution in the new Availability Zone. What is the cause of this problem?

A company wants to use an AWS Network Firewall firewall to secure its workloads in the cloud through network traffic inspection. The company must record complete metadata information, such as source/destination IP addresses and protocol type. The company must also record all network traffic flows and any DROP or ALERT actions that the firewall takes for traffic that the firewall processes. The Network Firewall endpoints are placed in the correct subnets, and the VPC route tables direct traffic to the Network Firewall endpoints on the path to and from the internet. How should a network engineer configure the firewall to meet these requirements?

A company is building a new workload on AWS that uses an Application Load Balancer (ALB). The company has configured a new ALB target group that uses slow start mode. A team begins registering Amazon EC2 instances as targets in the new target group. During testing, the team observes that the targets did not enter slow start mode. What caused the targets to not enter slow start mode?

A network engineer is using AWS Direct Connect connections and MACsec to encrypt data from a corporate data center to the Direct Connect location. The network engineer learns that the MACsec secret key might have been compromised. The network engineer needs to update the connection with an uncompromised secure key. Which solution will meet this requirement?

A network engineer configures a second AWS Direct Connect connection to an existing network. The network engineer runs a test in the AWS Direct Connect Resiliency Toolkit on the connections. The test produces a failure. During the failover event, the network engineer observes a 90-second interruption before traffic shifts to the failover connection. Which solution will reduce the time for failover?

A company is building an API-based application on AWS and is using a microservices architecture for the design. The company is using a multi-account AWS environment that includes a separate AWS account for each microservice development team. Each team hosts its microservice in its own VPC that contains Amazon EC2 instances behind a Network Load Balancer (NLB). A network engineer needs to use Amazon API Gateway in a shared services account to create an HTTP API to expose these microservices to external applications. The network engineer must ensure that access to the microservices can occur only over a private network. Additionally, the company must be able to control which entities from its internal network can connect to the microservices. In the future, the company will create more microservices that the company must be able to integrate with the application. What is the MOST secure solution that meets these requirements?

A company's VPC has Amazon EC2 instances that are communicating with AWS services over the public internet. The company needs to change the connectivity so that the communication does not occur over the public internet. The company deploys AWS PrivateLink endpoints in the VPC. After the deployment of the PrivateLink endpoints, the EC2 instances can no longer communicate at all with the required AWS services. Which combination of steps should a network engineer take to restore communication with the AWS services? (Choose two.)

An international company wants to implement a multi-site hybrid infrastructure. The company wants to deploy its cloud computing resources on AWS in the us-east-1 Region and in the eu-west-2 Region, and in on-premises data centers in the United States (US) and in the United Kingdom (UK). The data centers are connected to each other by a private WAN connection. IP routing information is exchanged dynamically through BGP. The company wants to have two AWS Direct Connect connections, one each in the US and the UK. The company expects to have 15 VPCs in each Region with CIDR blocks that do not overlap with each other or with CIDR blocks of the on-premises environment. The VPC CIDR blocks are planned so that the prefix aggregation can be performed both on a Regional level and across the entire AWS environment. The company will deploy a transit gateway in each Region to connect the VPCs. A network engineer plans to use a Direct Connect gateway in each Region. A transit VIF will attach the Direct Connect gateway in each Region to the transit gateway in that Region. The transit gateways will be peered with each other. The network engineer wants to ensure that traffic follows the shortest geographical path from source to destination. Traffic between the on-premises data centers and AWS must travel across a local Direct Connect connection. Traffic between the US data center and eu-west-2 and traffic between the UK data center and us-east-1 must use the private WAN connection to reach the Direct Connect connection to the appropriate Region when the Direct Connect connection is available. The network must be resilient to failures in either the private WAN connection or with the Direct Connect connections. The network also must reroute traffic automatically in the event of any failure. How should the network engineer configure the transit VIF associations on the Direct Connect gateways to meet these requirements?

A company's AWS infrastructure is spread across more than 50 accounts and across five AWS Regions. The company needs to manage its security posture with simplified administration and maintenance for all the AWS accounts. The company wants to use AWS Firewall Manager to manage the firewall rules and requirements. The company creates an organization with all features enabled in AWS Organizations. Which combination of steps should the company take next to meet the requirements? (Choose three.)

A company is using an Amazon CloudFront distribution that is configured with an Application Load Balancer (ALB) as an origin. A network engineer needs to implement a solution that requires all inbound traffic to the ALB to come from CloudFront. The network engineer must implement the solution at the network layer rather than in the application. Which solution will meet these requirements in the MOST operationally efficient way?

A company has AWS accounts in an organization in AWS Organizations. The company has implemented Amazon VPC IP Address Manager (IPAM) in its networking AWS account. The company is using AWS Resource Access Manager (AWS RAM) to share IPAM pools with other AWS accounts. The company has created a top-level pool with a CIDR block of 10.0.0.0/8. For each AWS account, the company has created an IPAM pool within the top-level pool. A network engineer needs to implement a solution to ensure that users in each AWS account cannot create new VPCs. The solution also must prevent users from associating a CIDR block with existing VPCs unless the CIDR block is from the IPAM pool for that account. Which solution will meet these requirements?

A company has an application that runs on premises. The application needs to communicate with an application that runs in a VPC on AWS. The communication between the applications must be encrypted and must use private IP addresses. The communication cannot travel across the public internet. The company has established a 1 Gbps AWS Direct Connect connection between the on-premises location and AWS. Which solution will meet the connectivity requirements with the LEAST operational overhead?

A company has established connectivity between its on-premises data center in Paris. France, and the AWS Cloud by using an AWS Direct Connect connection. The company uses a transit VIF that connects the Direct Connect connection with a transit gateway that is hosted in the Europe (Paris) Region. The company hosts workloads in private subnets in several VPCs that are attached to the transit gateway. The company recently acquired another corporation that hosts workloads on premises in an office building in Tokyo, Japan. The company needs to migrate the workloads from the Tokyo office to AWS. These workloads must have access to the company's existing workloads in Paris. The company also must establish connectivity between the Tokyo office building and the Paris data center. In the Asia Pacific (Tokyo) Region, the company creates a new VPC with private subnets for migration of the workloads. The workload migration must be completed in 5 days. The workloads cannot be directly accessible from the internet. Which set of steps should a network engineer take to meet these requirements?

Company A recently acquired Company B. Company A has a hybrid AWS and on-premises environment that uses a hosted AWS Direct Connect connection, a Direct Connect gateway, and a transit gateway. Company A has a transit VIF to access the resources in its production environment in the us-east-1 Region. Company B has applications that run across multiple VPCs in the us-west-2 Region in a single AWS account. A transit gateway connects all Company B's application VPCs. The CIDR blocks for both companies do not overlap. Company A needs to use the existing Direct Connect connection to access Company B’s applications from the on-premises environment. Which solution will meet these requirements?

A company has developed a web service for language translation. The web service's application runs on a fleet of Amazon EC2 instances that are in an Auto Scaling group. The instances run behind an Application Load Balancer (ALB) and are deployed in a private subnet. The web service can process requests that contain hundreds of megabytes of data. The company needs to give some customers the ability to access the web service. Each customer has its own AWS account. The company must make the web service accessible to approved customers without making the web service accessible to all customers. Which combination of steps will meet these requirements with the LEAST operational overhead? (Choose two.)

A company is migrating an application to the AWS Cloud. The company has successfully provisioned and tested connectivity between AWS Direct Connect and the company's on-premises data center. The application runs on Amazon EC2 instances across multiple Availability Zones. The instances are in an Auto Scaling group. The application communicates through HTTPS to a third-party vendor's data service that is hosted at the company’s data center. The data service implements a static ACL through explicit allow listing of client IP addresses. A network engineer must design a network solution so that the migrated application can continue to access the vendor’s data service as the application scales. Which solution will meet these requirements with the LEAST amount of ongoing change to the vendor's allow list?