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A company's application on EC2 instances relies on a Single-AZ RDS for MySQL DB instance. The SysOps administrator needs to ensure failover to minimize downtime.
A SysOps administrator creates two VPCs, VPC1 and VPC2, in a company's AWS account The SysOps administrator deploys a Linux Amazon EC2 instance in VPC1 and deploys an Amazon RDS for MySQL DB instance in VPC2. The DB instance is deployed in a private subnet. An application that runs on the EC2 instance needs to connect to the database. What should the SysOps administrator do to give the EC2 instance the ability to connect to the database?
A company needs to monitor the disk utilization of Amazon Elastic Block Store (Amazon EBS) volumes The EBS volumes are attached to Amazon EC2 Linux Instances A SysOps administrator must set up an Amazon CloudWatch alarm that provides an alert when disk utilization increases to more than 80%. Which combination of steps must the SysOps administrator lake lo meet these requirements? (Select THREE.)
A company uses AWS CloudFormation to manage a stack of Amazon EC2 instances on AWS. A SysOps administrator needs to keep the instances and all of the instances' data, even if someone deletes the stack. Which solution will meet these requirements?
A SysOps administrator is optimizing the cost of a workload. The workload is running in multiple AWS Regions and is using AWS Lambda with Amazon EC2 On-Demand Instances for the compute. The overall usage is predictable. The amount of compute that is consumed in each Region varies, depending on the users' locations. Which approach should the SysOps administrator use to optimize this workload?
The SysOps administrator must dynamically reference the latest AMI ID from Systems Manager Parameter Store in CloudFormation templates for new AMI versions.
A company has an application that collects notifications from thousands of alarm systems. The notifications include alarm notifications and information notifications. The information notifications include the system arming processes, disarming processes, and sensor status. All notifications are kept as messages in an Amazon Simple Queue Service (Amazon SQS) queue. Amazon EC2 instances that are in an Auto Scaling group process the messages. A SysOps administrator needs to implement a solution that prioritizes alarm notifications over information notifications. Which solution will meet these requirements?
A team of developers is using several Amazon S3 buckets as centralized repositories. Users across the world upload large sets of files to these repositories. The development team's applications later process these files. A SysOps administrator sets up a new S3 bucket. DOC-EXAMPLE-BUCKET, to support a new workload. The new S3 bucket also receives regular uploads of large sets of files from users worldwide. When the new S3 bucket is put into production, the upload performance from certain geographic areas is lower than the upload performance that the existing S3 buckets provide. What should the SysOps administrator do to remediate this issue?
The SysOps administrator must modify the AWS Config rule that deletes noncompliant SSH inbound rules to update the rule to allow SSH from specific trusted IP addresses instead.
The SysOps administrator needs to address high disk I/O issues during EC2 instance bootstrap in an Auto Scaling group.

Question 340 - SOA-C02 discussion

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A company has an AWS Site-to-Site VPN connection between on-premises resources and resources that are hosted in a VPC. A SysOps administrator launches an Amazon EC2 instance that has only a private IP address into a private subnet in the VPC. The EC2 instance runs Microsoft Windows Server.

A security group for the EC2 instance has rules that allow inbound traffic from the on-premises network over the VPN connection. The on-premises environment contains a third-party network firewall. Rules in the third-party network firewall allow Remote Desktop Protocol (RDP) traffic to flow between the on-premises users over the VPN connection.

The on-premises users are unable to connect to the EC2 instance and receive a timeout error.

What should the SysOps administrator do to troubleshoot this issue?

A.
Create Amazon CloudWatch logs for the EC2 instance to check for blocked traffic.
Answers
A.
Create Amazon CloudWatch logs for the EC2 instance to check for blocked traffic.
B.
Create Amazon CloudWatch logs for the Site-to-Site VPN connection to check for blocked traffic.
Answers
B.
Create Amazon CloudWatch logs for the Site-to-Site VPN connection to check for blocked traffic.
C.
Create VPC flow logs for the EC2 instance's elastic network interface to check for rejected traffic.
Answers
C.
Create VPC flow logs for the EC2 instance's elastic network interface to check for rejected traffic.
D.
Instruct users to use EC2 Instance Connect as a connection method.
Answers
D.
Instruct users to use EC2 Instance Connect as a connection method.
Suggested answer: C

Explanation:

To troubleshoot connectivity issues for an EC2 instance that's not accessible via RDP after moving to a private subnet, VPC flow logs are the most direct and useful tool. VPC flow logs capture information about the IP traffic going to and from network interfaces in your VPC, enabling you to identify whether the traffic to the EC2 instance is being allowed or rejected. Setting up flow logs for the EC2 instance's network interface will help pinpoint any blocks or drops in traffic that could be causing the timeout error. Option C is the correct action as it directly investigates the traffic flow, which is crucial for resolving connectivity issues. AWS documentation on VPC flow logs provides further details VPC Flow Logs.

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asked 16/09/2024
Mateusz Zielinski
34 questions
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