Question 31
A SysOps administrator is using Amazon EC2 instances to host an application. The SysOps administrator needs to grant permissions for the application to access an Amazon DynamoDB table.
Which solution will meet this requirement?
A. Create access keys to access the DynamoDB table. Assign the access keys to the EC2 instance profile.
B. Create an EC2 key pair to access the DynamoDB table. Assign the key pair to the EC2 instance profile.
C. Create an IAM user to access the DynamoDB table. Assign the IAM user to the EC2 instance profile.
D. Create an IAM role to access the DynamoDB table. Assign the IAM role to the EC2 instance profile.
Question 32
A SysOps administrator wants to protect objects in an Amazon S3 bucket from accidental overwrite and deletion. Noncurrent objects must be kept for 90 days and then must be permanently deleted. Objects must reside within the same AWS Region as the original S3 bucket.
Which solution meets these requirements?
A. Create an Amazon Data Lifecycle Manager (Amazon DLM) lifecycle policy for the S3 bucket. Add a rule to the lifecycle policy to delete noncurrent objects after 90 days.
B. Create an AWS Backup policy for the S3 bucket. Create a backup rule that includes a lifecycle to expire noncurrent objects after 90 days.
C. Enable S3 Cross-Region Replication on the S3 bucket. Create an S3 Lifecycle policy for the bucket to expire noncurrent objects after 90 days.
D. Enable S3 Versioning on the S3 bucket. Create an S3 Lifecycle policy for the bucket to expire noncurrent objects after 90 days.
Question 33
A company has an application that customers use to search for records on a website. The application's data is stored in an Amazon Aurora DB cluster. The application's usage varies by season and by day of the week.
The website's popularity is increasing, and the website is experiencing slower performance because of increased load on the DB cluster during periods of peak activity. The application logs show that the performance issues occur when users are searching for information. The same search is rarely performed multiple times.
A SysOps administrator must improve the performance of the platform by using a solution that maximizes resource efficiency.
Which solution will meet these requirements?
A. Deploy an Amazon ElastiCache for Redis cluster in front of the DB cluster. Modify the application to check the cache before the application issues new queries to the database. Add the results of any queries to the cache.
B. Deploy an Aurora Replica for the DB cluster. Modify the application to use the reader endpoint for search operations. Use Aurora Auto Scaling to scale the number of replicas based on load.
C. Use Provisioned IOPS on the storage volumes that support the DB cluster to improve performance sufficiently to support the peak load on the application.
D. Increase the instance size in the DB cluster to a size that is sufficient to support the peak load on the application. Use Aurora Auto Scaling to scale the instance size based on load.
Question 34
A company uses AWS Organizations to manage multiple AWS accounts. Corporate policy mandates that only specific AWS Regions can be used to store and process customer data. A SysOps administrator must prevent the provisioning of Amazon EC2 instances in unauthorized Regions by anyone in the company.
What is the MOST operationally efficient solution that meets these requirements?
A. Configure AWS CloudTrail in all Regions to record all API activity. Create an Amazon EventBridge (Amazon CloudWatch Events) rule in all unauthorized Regions for ec2:RunInstances events. Use AWS Lambda to terminate the launched EC2 instances.
B. In each AWS account, create a managed IAM policy that uses a Region condition to deny the ec2:RunInstances action in all unauthorized Regions. Attach this policy to all IAM groups in each AWS account.
C. In each AWS account, create an IAM permissions boundary policy that uses a Region condition to deny the ec2:RunInstances action in all unauthorized Regions. Attach the permissions boundary policy to all IAM users in each AWS account.
D. Create a service control policy (SCP) in AWS Organizations to deny the ec2:RunInstances action in all unauthorized Regions. Attach this policy to the root level of the organization.
Question 35
A company's public website is hosted in an Amazon S3 bucket in the us-east-1 Region behind an Amazon CloudFront distribution. The company wants to ensure that the website is protected from DDoS attacks. A SysOps administrator needs to deploy a solution that gives the company the ability to maintain control over the rate limit at which DDoS protections are applied.
Which solution will meet these requirements?
A. Deploy a global-scoped AWS WAF web ACL with an allow default action. Configure an AWS WAF rate-based rule to block matching traffic. Associate the web ACL with the CloudFront distribution.
B. Deploy an AWS WAF web ACL with an allow default action in us-east-1. Configure an AWS WAF rate-based rule to block matching traffic. Associate the web ACL with the S3 bucket.
C. Deploy a global-scoped AWS WAF web ACL with a block default action. Configure an AWS WAF rate-based rule to allow matching traffic. Associate the web ACL with the CloudFront distribution.
D. Deploy an AWS WAF web ACL with a block default action in us-east-1. Configure an AWS WAF rate-based rule to allow matching traffic. Associate the web ACL with the S3 bucket.
Question 36
A SysOps administrator developed a Python script that uses the AWS SDK to conduct several maintenance tasks. The script needs to run automatically every night.
What is the MOST operationally efficient solution that meets this requirement?
A. Convert the Python script to an AWS Lambda function. Use an Amazon EventBridge (Amazon CloudWatch Events) rule to invoke the function every night.
B. Convert the Python script to an AWS Lambda function. Use AWS CloudTrail to invoke the function every night.
C. Deploy the Python script to an Amazon EC2 instance. Use Amazon EventBride (Amazon CloudWatch Events) to schedule the instance to start and stop every night.
D. Deploy the Python script to an Amazon EC2 instance. Use AWS Systems Manager to schedule the instance to start and stop every night.
Question 37
A SysOps administrator must create a solution that immediately notifies software developers if an AWS Lambda function experiences an error.
Which solution will meet this requirement?
A. Create an Amazon Simple Notification Service (Amazon SNS) topic with an email subscription for each developer. Create an Amazon CloudWatch alarm by using the Errors metric and the Lambda function name as a dimension. Configure the alarm to send a notification to the SNS topic when the alarm state reaches ALARM.
B. Create an Amazon Simple Notification Service (Amazon SNS) topic with a mobile subscription for each developer. Create an Amazon EventBridge (Amazon CloudWatch Events) alarm by using the LambdaError as the event pattern and the SNS topic name as a resource. Configure the alarm to send a notification to the SNS topic when the alarm state reaches ALARM.
C. Verify each developer email address in Amazon Simple Email Service (Amazon SES). Create an Amazon CloudWatch rule by using the LambdaError metric and developer email addresses as dimensions. Configure the rule to send an email through Amazon SES when the rule state reaches ALARM.
D. Verify each developer mobile phone in Amazon Simple Email Service (Amazon SES). Create an Amazon EventBridge (Amazon CloudWatch Events) rule by using Error as the event pattern and the Lambda function name as a resource. Configure the rule to send a push notification through Amazon SES when the rule state reaches ALARM.
Question 38
A company has a private Amazon S3 bucket that contains sensitive information. A SysOps administrator needs to keep logs of the IP addresses from authentication failures that result from attempts to access objects in the bucket. The logs must be stored so that they cannot be overwritten or deleted for 90 days.
Which solution will meet these requirements?
A. Create an AWS CloudTrail trail. Configure the log files to be saved to Amazon CloudWatch Logs. Configure the log group with a retention period of 90 days.
B. Create an AWS CloudTrail trail. Configure the log files to be saved to a different S3 bucket. Turn on CloudTrail log file integrity validation for 90 days.
C. Turn on access logging for the S3 bucket. Configure the access logs to be saved to Amazon CloudWatch Logs. Configure the log group with a retention period of 90 days.
D. Turn on access logging for the S3 bucket. Configure the access logs to be saved in a second S3 bucket. Turn on S3 Object Lock on the second S3 bucket, and configure a default retention period of 90 days.
Question 39
A SysOps administrator migrates NAT instances to NAT gateways. After the migration, an application that is hosted on Amazon EC2 instances in a private subnet cannot access the internet.
Which of the following are possible reasons for this problem? (Choose two.)
A. The application is using a protocol that the NAT gateway does not support.
B. The NAT gateway is not in a security group.
C. The NAT gateway is in an unsupported Availability Zone.
D. The NAT gateway is not in the Available state.
E. The port forwarding settings do not allow access to internal services from the internet.
Question 40
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 that the application is running on the protocol and the port that the listener is expecting.
C. Verify the listener priority in the ALB. Change the priority if necessary.
D. Verify the maximum number of instances in the Auto Scaling group. Change the number if necessary.
