A company has scientists who upload large data objects to an Amazon S3 bucket. The scientists upload the objects as multipart uploads. The multipart uploads often fail because of poor end-client connectivity.
The company wants to optimize storage costs that are associated with the data. A SysOps administrator must implement a solution that presents metrics for incomplete uploads. The solution also must automatically delete any incomplete
uploads after 7 days.
Which solution will meet these requirements?
A. Review the Incomplete Multipart Upload Bytes metric in the S3 Storage Lens dashboard. Create an S3 Lifecycle policy to automatically delete any incomplete multipart uploads after 7 days.
B. Implement S3 Intelligent-Tiering to move data into lower-cost storage classes after 7 days. Create an S3 Storage Lens policy to automatically delete any incomplete multipart uploads after 7 days.
C. Access the S3 console. Review the Metrics tab to check the storage that incomplete multipart uploads are consuming. Create an AWS Lambda function to delete any incomplete multipart uploads after 7 days.
D. Use the S3 analytics storage class analysis tool to identify and measure incomplete multipart uploads. Configure an S3 bucket policy to enforce restrictions on multipart uploads to delete incomplete multipart uploads after 7 days.
A company deployed a new web application on multiple Amazon EC2 instances behind an Application Load Balancer (ALB). The EC2 instances run in an Auto Scaling group. Users report that they are frequently being prompted to log in. What should a SysOps administrator do to resolve this issue?
A. Configure an Amazon CloudFront distribution with the ALB as the origin.
B. Enable sticky sessions (session affinity) for the target group of EC2 instances.
C. Redeploy the EC2 instances in a spread placement group.
D. Replace the ALB with a Network Load Balancer.
An ecommerce company uses an Amazon ElastiCache for Redis cluster for in-memory caching of popular product queries on a shopping website. The cache eviction policy is randomly evicting keys whether or not a TTL is set. A SysOps administrator must improve the cache hit ratio without increasing costs.
Which solution will meet these requirements?
A. Add another node to the ElastiCache cluster.
B. Increase the ElastiCache TTL value.
C. Change the eviction policy to randomly evict keys that have a TTL set.
D. Change the eviction policy to evict the least frequently used keys.
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 take to meet these requirements? (Choose three.)
A. Create an IAM role that includes the CloudWatchAgentServerPolicy AWS managed policy. Attach the role to the instances.
B. Create an IAM role that includes the CloudWatchApplicationInsightsReadOnlyAccess AWS managed policy. Attach the role to the instances.
C. Install and start the CloudWatch agent by using AWS Systems Manager or the command line.
D. Install and start the CloudWatch agent by using an IAM role. Attach the CloudWatchAgentServerPolicy AWS managed policy to the role.
E. Configure a CloudWatch alarm to enter ALARM state when the disk_used_percent CloudWatch metric is greater than 80%.
F. Configure a CloudWatch alarm to enter ALARM state when the disk_used CloudWatch metric is greater than 80% or when the disk_free CloudWatch metric is less than 20%.
A company's web application runs on Amazon EC2 instances in a single AWS Region. The infrastructure must be designed so the application remains available with no performance degradation in the event of an Availability Zone (AZ) failure. To ensure optimal performance, the application must maintain a minimum of 12 instances at all times.
Which solution will meet the requirements with the fewest running instances possible?
A. 2 AZs with 6 instances in each AZ
B. 2 AZs with 12 instances in each AZ
C. 3 AZs with 4 instances in each AZ
D. 3 AZs with 6 instances in each AZ
A company has developed a service that is deployed on a fleet of Linux-based Amazon EC2 instances that are in an Auto Scaling group. The service occasionally fails unexpectedly because of an error in the application code. The company's
engineering team determines that resolving the underlying cause of the service failure could take several weeks.
A SysOps administrator needs to create a solution to automate recovery if the service crashes on any of the EC2 instances.
Which solutions will meet this requirement? (Choose two.)
A. Install the Amazon CloudWatch agent on the EC2 instances. Configure the CloudWatch agent to monitor the service. Set the CloudWatch action to restart if the service health check fails.
B. Tag the EC2 instances. Create an AWS Lambda function that uses AWS Systems Manager Session Manager to log in to the tagged EC2 instances and restart the service. Schedule the Lambda function to run every 5 minutes.
C. Tag the EC2 instances. Use AWS Systems Manager State Manager to create an association that uses the AWS-RunShellScript document. Configure the association command with a script that checks if the service is running and that starts the service if the service is not running. For targets, specify the EC2 instance tag. Schedule the association to run every 5 minutes.
D. Update the EC2 user data that is specified in the Auto Scaling group's launch template to include a script that runs on a cron schedule every 5 minutes. Configure the script to check if the service is running and to start the service if the service is not running. Redeploy all the EC2 instances in the Auto Scaling group with the updated launch template.
E. Update the EC2 user data that is specified in the Auto Scaling group's launch template to ensure that the service runs during startup. Redeploy all the EC2 instances in the Auto Scaling group with the updated launch template.
A company has a stateless application that is hosted on a fleet of 10 Amazon EC2 On-Demand Instances in an Auto Scaling group. A minimum of 6 instances are needed to meet service requirements.
Which action will maintain uptime for the application MOST cost-effectively?
A. Use a Spot Fleet with an On-Demand capacity of 6 instances.
B. Update the Auto Scaling group with a minimum of 6 On-Demand Instances and a maximum of 10 On-Demand Instances.
C. Update the Auto Scaling group with a minimum of 1 On-Demand Instance and a maximum of 6 On-Demand Instances.
D. Use a Spot Fleet with a target capacity of 6 instances.
A company has a high performance computing (HPC) application that runs on Amazon EC2 instances. The application requires minimum latency and maximum network throughput between nodes.
How should a SysOps administrator deploy the EC2 instances to meet these requirements?
A. Use a cluster placement group in a single Availability Zone.
B. Use a cluster placement group across multiple Availability Zones.
C. Use a partition placement group in a single Availability Zone.
D. Use a partition placement group across multiple Availability Zones.
A company stores its internal data within an Amazon S3 bucket. All existing data within the S3 bucket is protected by using server-side encryption with Amazon S3 managed encryption keys (SSE-S3). S3 Versioning is enabled. A SysOps administrator must replicate the internal data to another S3 bucket in a different AWS account for disaster recovery. All the existing data is copied from the source S3 bucket to the destination S3 bucket.
Which replication solution is MOST operationally efficient?
A. Add a replication rule to the source bucket and specify the destination bucket. Create a bucket policy for the destination bucket to allow the owner of the source bucket to replicate objects.
B. Schedule an AWS Batch job with Amazon EventBridge to copy new objects from the source bucket to the destination bucket. Create a Batch Operations IAM role in the destination account.
C. Configure an Amazon S3 event notification for the source bucket to invoke an AWS Lambda function to copy new objects to the destination bucket. Ensure that the Lambda function has cross-account access permissions.
D. Run a scheduled script on an Amazon EC2 instance to copy new objects from the source bucket to the destination bucket. Assign cross-account access permissions to the EC2 instance's role.
A SysOps administrator is troubleshooting a VPC with public and private subnets that leverage custom network ACLs. Instances in the private subnet are unable to access the internet. There is an internet gateway attached to the public subnet. The private subnet has a route to a NAT gateway that is also attached to the public subnet. The Amazon EC2 instances are associated with the default security group for the VPC.
What is causing the issue in this scenario?
A. There is a network ACL on the private subnet set to deny all outbound traffic.
B. There is no NAT gateway deployed in the private subnet of the VPC.
C. The default security group for the VPC blocks all inbound traffic to the EC2 instances.
D. The default security group for the VPC blocks all outbound traffic from the EC2 instances.
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