SOA-C03無料問題集「Amazon AWS Certified CloudOps Engineer

質問 1

A CloudOps engineer needs to create a report that shows how many bytes are sent to and received from each target group member for an Application Load Balancer (ALB). Which combination of steps should the CloudOps engineer take to meet these requirements? (Select TWO.)

（A）Use Amazon Athena to query the ALB logs. Query the table. Use the received_bytes and sent_bytes fields to calculate the total bytes grouped by the target and port fields.

（B）Enable access logging for the ALB. Save the logs to an Amazon S3 bucket.

（C）Use Amazon Athena to query the ALB logs. Query the table. Use the received_bytes and sent_bytes fields to calculate the total bytes grouped by the client port field.

（D）Install the Amazon CloudWatch agent on the instances in the target group.

（E）Create an Amazon CloudWatch dashboard that shows the Sum statistic of the ProcessedBytes metric for the ALB.

正解：A、B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 2

A CloudOps engineer needs to track the costs of data transfer between AWS Regions. The CloudOps engineer must implement a solution to send alerts to an email distribution list when transfer costs reach 75% of a specific threshold.
What should the CloudOps engineer do to meet these requirements?

（A）Use AWS Budgets to create a cost budget for data transfer costs. Set an alert at 75% of the budgeted amount. Configure the budget to send a notification to the email distribution list when costs reach 75% of the threshold.

（B）Create an AWS Cost and Usage Report. Analyze the results in Amazon Athena. Configure an alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic when costs reach 75% of the threshold. Subscribe the email distribution list to the topic.

（C）Create an Amazon CloudWatch billing alarm to detect when costs reach 75% of the threshold.
Configure the alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe the email distribution list to the topic.

（D）Set up a VPC flow log. Set up a subscription filter to an AWS Lambda function to analyze data transfer. Configure the Lambda function to send a notification to the email distribution list when costs reach 75% of the threshold.

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

A company is migrating a legacy application to AWS. The application runs on EC2 instances across multiple Availability Zones behind an Application Load Balancer (ALB). The target group routing algorithm is set to weighted random, and the application requires session affinity (sticky sessions).
After deployment, users report random application errors that were not present before migration, even though target health checks are passing.
Which solution will meet this requirement?

（A）Turn off the cross-zone load balancing attribute of the target group.

（B）Turn on anomaly mitigation for the target group.

（C）Set the routing algorithm of the target group to least outstanding requests.

（D）Increase the deregistration delay attribute of the target group.

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

A company's ecommerce application is running on Amazon EC2 instances that are behind an Application Load Balancer (ALB). The instances are in an Auto Scaling group. Customers report that the website is occasionally down. When the website is down, it returns an HTTP 500 (server error) status code to customer browsers.
The Auto Scaling group's health check is configured for EC2 status checks, and the instances appear healthy.
Which solution will resolve the problem?

（A）Add Elastic Load Balancing (ELB) health checks to the Auto Scaling group.

（B）Replace the ALB with a Network Load Balancer.

（C）Update the target group configuration on the ALB. Enable session affinity (sticky sessions).

（D）Install the Amazon CloudWatch agent on all instances. Configure the agent to reboot the instances.

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

A company uses an Amazon Simple Queue Service (Amazon SQS) queue and Amazon EC2 instances in an Auto Scaling group with target tracking for a web application. The company collects the ASGAverageNetworkIn metric but notices that instances do not scale fast enough during peak traffic. There are a large number of SQS messages accumulating in the queue.
A CloudOps engineer must reduce the number of SQS messages during peak periods.
Which solution will meet this requirement?

（A）Define and use a new custom Amazon CloudWatch metric based on the SQS ApproximateNumberOfMessagesDelayed metric in the target tracking policy.

（B）Define and use simple scaling by specifying a ChangeInCapacity value for the EC2 instances.

（C）Define and use step scaling by specifying a ChangeInCapacity value for the EC2 instances.

（D）Define and use Amazon CloudWatch metric math to calculate the SQS queue backlog for each instance in the target tracking policy.

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

A company has an application that uses Amazon ElastiCache for Memcached to cache query responses to improve latency.
However, the application's users are reporting slow response times. A SysOps administrator notices that the Amazon CloudWatch metrics for Memcached evictions are high.
Which actions should the SysOps administrator take to fix this issue? (Choose two.)

（A）Increase the size of the nodes in the cluster.

（B）Decrease the number of nodes in the cluster.

（C）Increase the number of nodes in the cluster.

（D）Increase the ConnectionOverhead parameter value.

（E）Flush the contents of ElastiCache for Memcached.

正解：A、C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 7

A company has attached the following policy to an IAM user:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "rds:Describe*",
"Resource": "*"
},
{
"Effect": "Allow",
"Action": "ec2:*",
"Resource": "*",
"Condition": {
"StringEquals": {
"ec2:Region": "us-east-1"
}
}
},
{
"Effect": "Deny",
"NotAction": [
"ec2:*",
"s3:GetObject"
],
"Resource": "*"
}
]
}
Which of the following actions are allowed for the IAM user?

（A）Amazon RDS DescribeDBInstances action in the us-east-1 Region.

（B）Amazon EC2 AttachNetworkInterface action in the eu-west-1 Region.

（C）Amazon EC2 DescribeInstances action in the us-east-1 Region.

（D）Amazon S3 PutObject operation in a bucket named testbucket.

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 8

A company runs applications that generate log files. The company stores the log files in Amazon S3. A CloudOps engineer must automatically process the log files whenever new files upload to the S3 bucket. Which solution will meet this requirement?

（A）Create an AWS Step Functions state machine with a wait state that monitors the S3 bucket for new files and invokes an AWS Lambda function.

（B）Create a pipeline in AWS CodePipeline with a source stage that monitors the S3 bucket for new files and invokes an AWS Lambda function.

（C）Configure an Amazon CloudWatch event rule that triggers on S3 PUT events and invokes an AWS Lambda function.

（D）Configure an S3 event notification to invoke an AWS Lambda function to process the new log files.

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

SOA-C03 無料問題集「Amazon AWS Certified CloudOps Engineer - Associate」

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