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問題 #312
A company runs an application on an Amazon EC2 instance. A SysOps administrator creates an Auto Scaling group and an Application Load Balancer (ALB) to handle an increase in demand.
However, the EC2 instances are failing the health check.
What should the SysOps administrator do to troubleshoot this issue?

A. Verify that the Auto Scaling group is configured to use all AWS Regions.
B. Verify the maximum number of instances in the Auto Scaling group.Change the number if necessary.
C. Verify that the application is running on the protocol and the port that the listener is expecting.
D. Verify the listener priority in the ALB.
Change the priority if necessary.

答案：C

解題說明：
Target.FailedHealthChecks
Verify that the target is listening for traffic on the health check port. You can use the ss command on Linux targets to verify which ports your server is listening on. For Windows targets, you can use the netstat command.
https://aws.amazon.com/premiumsupport/knowledge-center/elb-fix-failing-health-checks-alb/

問題 #313
A company requires that all activity in its AWS account be logged using AWS CloudTrail. Additionally, a SysOps administrator must know when CloudTrail log files are modified or deleted.
How should the SysOps administrator meet these requirements?

A. Enable log file integrity validation. Use the AWS CloudTrail .Processing Library to validate the log files.
B. Enable log file integrity validation Use the AWS CLI to validate the log files.
C. Use Amazon CloudWatch Logs to monitor the log files for modifications.
D. Use CloudTrail Insights to monitor the log files for modifications.

答案：B

解題說明：
* CloudTrail Log File Integrity Validation:
* AWS CloudTrail provides a feature for log file integrity validation to ensure logs have not been modified or deleted.
* Steps to Enable and Validate:
* Enable Log File Integrity Validation:
* Go to the CloudTrail Console.
* Select or create a trail.
* In the trail settings, enable Log file validation.
* Use the AWS CLI for Validation:
* Use the following CLI command:
aws cloudtrail validate-logs --trail-name <trail-name>
* This command validates the digest files generated by CloudTrail against the log files.
* Why Other Options Are Incorrect:
* B: Using the AWS CloudTrail Processing Library is unnecessary for validation.
* C: CloudTrail Insights is designed to identify unusual activity, not monitor log modifications.
* D: Amazon CloudWatch Logs cannot directly monitor CloudTrail logs for integrity.
References:
* CloudTrail Log File Validation
* AWS CLI Command for Validation

問題 #314
A custom application must be installed on all Amazon EC2 instances. The application is small, updated frequently, and can be installed automatically.
How can the application be deployed on new EC2 instances?

A. Use AWS Systems Manager to inject the application into an AMI.
B. Create a custom API using Amazon API Gateway to call an installation executable from an AWS CloudFormation template.
C. Launch a script that downloads and installs the application using Amazon EC2 user data.
D. Configure AWS CodePipeline to deploy code changes and updates.

答案：C

解題說明：
User data allows you to run scripts or execute commands on an EC2 instance during launch. You can include the script that downloads and installs the application in the user data section when launching an EC2 instance. This allows the application to be automatically deployed when the instance is launched.

問題 #315
A SysOps administrator uses AWS Systems Manager Session Manager to connect to instances After the SysOps administrator launches a new Amazon EC2 instance the EC2 instance does not appear in the Session Manager list of systems that are available for connection. The SysOps administrator verities that Systems Manager Agent is installed updated and running on the EC2 instance What is the reason for this issue?

A. The EC2 instance ID has not been entered into the Session Manager configuration
B. The SysOps administrator has not attached a security group to the EC2 instance to allow SSH on port 22.
C. The SysOps administrator does not have access to the key pair that is required for connection
D. The EC2 instance does not have an attached IAM role that allows Session Manager to connect to the EC2 instance.

答案：D

解題說明：
If an EC2 instance does not appear in the Systems Manager Session Manager list, it is likely because the instance does not have an attached IAM role that allows Session Manager to connect.
Attach IAM Role with Necessary Permissions:
Ensure the EC2 instance has an IAM role attached with the AmazonSSMManagedInstanceCore policy.
Steps to Attach IAM Role:
Open the EC2 console, select the instance, and choose "Actions" -> "Instance Settings" -> "Attach/Replace IAM Role." Select or create an IAM role with the necessary permissions for Session Manager.
Permissions for Session Manager:
The AmazonSSMManagedInstanceCore policy provides the required permissions for the Systems Manager agent to interact with the Systems Manager service.
Reference:
Session Manager Prerequisites
Attach an IAM Role to an Instance

問題 #316
A company is running an application on a fleet of Amazon EC2 instances behind an Application Load Balancer (ALB). The EC2 instances are launched by an Auto Scaling group and are automatically registered in a target group. A SysOps administrator must set up a notification to alert application owners when targets fail health checks.
What should the SysOps administrator do to meet these requirements?

A. Configure an Amazon EC2 Auto Scaling custom lifecycle action to send an Amazon Simple Notification Service (Amazon SNS) notification when an instance is in the Pending:Wait state.
B. Update the ALB health check to send an Amazon Simple Notification Service (Amazon SNS) notification when an instance is unhealthy.
C. Create an Amazon CloudWatch alarm on the UnHealthyHostCount metric. Configure an action to send an Amazon Simple Notification Service (Amazon SNS) notification when the metric is greater than 0.
D. Update the Auto Scaling group. Configure an activity notification to send an Amazon Simple Notification Service (Amazon SNS) notification for the Unhealthy event type.

答案：C

解題說明：
To set up a notification for failed health checks of targets in the ALB, follow these steps:
* Create a CloudWatch Alarm:
* Navigate to CloudWatch and create a new alarm based on the UnHealthyHostCount metric of the target group.
Reference: Creating Alarms
Configure the Alarm Action:
Configure the alarm to send an Amazon SNS notification when the UnHealthyHostCount metric is greater than 0.
Reference: Using Amazon SNS for CloudWatch Alarms
This setup will notify application owners whenever a target fails health checks.

問題 #317
......

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SOA-C02證照指南 - SOA-C02熱門證照

SOA-C02熱門證照，SOA-C02學習筆記

最新的 AWS Certified Associate SOA-C02 免費考試真題 (Q312-Q317):

我們提供最好的SOA-C02證照指南，保證妳100%通過考試