Cloud Practice

#91 (Accuracy: 100% / 2 votes)

A company stores files on 50 Amazon S3 buckets in the same AWS Region. The company wants to connect to the S3 buckets securely over a private connection from its Amazon EC2 instances. The company needs a solution that produces no additional cost.

Which solution will meet these requirements?

A. Create a gateway VPC endpoint for each S3 bucket. Attach the gateway VPC endpoints to each subnet inside the VPC.
B. Create an interface VPC endpoint for each S3 bucket. Attach the interface VPC endpoints to each subnet inside the VPC.
C. Create one gateway VPC endpoint for all the S3 buckets. Add the gateway VPC endpoint to the VPC route table.
D. Create one interface VPC endpoint for all the S3 buckets. Add the interface VPC endpoint to the VPC route table.

#92 (Accuracy: 100% / 3 votes)

A company hosts a production MySQL database on an Amazon Aurora single-node DB cluster. The database is queried heavily for reporting purposes. The DB cluster is experiencing periods of performance degradation because of high CPU utilization and maximum connections errors. A SysOps administrator needs to improve the stability of the database.

Which solution will meet these requirements?

A. Create an Aurora Replica node. Create an Auto Scaling policy to scale replicas based on CPU utilization. Ensure that all reporting requests use the read-only connection string
B. Create a second Aurora MySQL single-node DB cluster in a second Availability Zone. Ensure that all reporting requests use the connection string for this additional node
C. Create an AWS Lambda function that caches reporting requests. Ensure that all reporting requests call the Lambda function
D. Create a multi-node Amazon ElastiCache cluster. Ensure that all reporting requests use the ElastiCache cluster. Use the database if the data is not in the cache.

#93 (Accuracy: 100% / 6 votes)

A company runs an application on Amazon EC2 instances that are in an Amazon EC2 Auto Scaling group. Scale-out actions take a long time to become complete because of long-running boot scripts. A SysOps administrator must implement a solution to reduce the required time for scale-out actions without overprovisioning the Auto Scaling group.

Which solution will meet these requirements?

A. Change the launch configuration to use a larger instance size.
B. Increase the minimum number of instances in the Auto Scaling group.
C. Add a predictive scaling policy to the Auto Scaling group.
D. Add a warm pool to the Auto Scaling group.

#94 (Accuracy: 100% / 4 votes)

A company has two VPC networks named VPC A and VPC B. The VPC A CIDR block is 10.0.0.0/16 and the VPC B CIDR block is 172.31.0.0/16. The company wants to establish a VPC peering connection named pcx-12345 between both VPCs.
Which rules should appear in the route table of VPC A after configuration? (Choose two.)

A. Destination: 10.0.0.0/16, Target: Local
B. Destination: 172.31.0.0/16, Target: Local
C. Destination: 10.0.0.0/16, Target: pcx-12345
D. Destination: 172.31.0.0/16, Target: pcx-12345
E. Destination: 10.0.0.0/16, Target: 172.31.0.0/16

#95 (Accuracy: 93% / 6 votes)

A company hosts a static website on Amazon S3. An Amazon CloudFront distribution presents this site to global users. The company uses the Managed-
CachingDisabled CloudFront cache policy. The company's developers confirm that they frequently update a file in Amazon S3 with new information.
Users report that the website presents correct information when the website first loads the file. However, the users' browsers do not retrieve the updated file after a refresh.
What should a SysOps administrator recommend to fix this issue?

A. Add a Cache-Control header field with max-age=0 to the S3 object.
B. Change the CloudFront cache policy to Managed-CachingOptimized.
C. Disable bucket versioning in the S3 bucket configuration.
D. Enable content compression in the CloudFront configuration.

#96 (Accuracy: 100% / 3 votes)

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 computer. The overall usage is predictable. The amount of computer that is consumed in each Region varies, depending on the users' locations.

Which approach should the SysOps administrator use to optimize this workload?

A. Purchase Computer Savings Plans based on the usage during the past 30 days.
B. Purchase Convertible Reserved Instances by calculating the usage baseline.
C. Purchase EC2 Instance Savings Plans based on the usage during the past 30 days.
D. Purchase Standard Reserved Instances by calculating the usage baseline.

#97 (Accuracy: 100% / 8 votes)

An AWS Lambda function is intermittently failing several times a day. A SysOps administrator must find out how often this error has occurred in the last 7 days.
Which action will meet this requirement in the MOST operationally efficient manner?

A. Use Amazon Athena to query the Amazon CloudWatch logs that are associated with the Lambda function.
B. Use Amazon Athena to query the AWS CloudTrail logs that are associated with the Lambda function.
C. Use Amazon CloudWatch Logs Insights to query the associated Lambda function logs.
D. Use Amazon OpenSearch Service (Amazon Elasticsearch Service) to stream the Amazon CloudWatch logs for the Lambda function.

#98 (Accuracy: 93% / 5 votes)

A company is creating a new multi-account architecture. A SysOps administrator must implement a login solution to centrally manage user access and permissions across all AWS accounts. The solution must be integrated with AWS Organizations and must be connected to a third-party Security Assertion Markup Language (SAML) 2.0 identity provider (IdP).

What should the SysOps administrator do to meet these requirements?

A. Configure an Amazon Cognito user pool. Integrate the user pool with the third-party IdP.
B. Enable and configure AWS Single Sign-On with the third-party IdP.
C. Federate the third-party IdP with AWS Identity and Access Management (IAM) for each AWS account in the organization.
D. Integrate the third-party IdP directly with AWS Organizations.

#99 (Accuracy: 100% / 4 votes)

A SysOps administrator wants to monitor the free disk space that is available on a set of Amazon EC2 instances that have Amazon Elastic Block Store (Amazon EBS) volumes attached. The SysOps administrator wants to receive a notification when the used disk space of the EBS volumes exceeds a threshold value, but only when the DiskReadOps metric also exceeds a threshold value. The SysOps administrator has set up an Amazon Simple Notification Service (Amazon SNS) topic.

How can the SysOps administrator receive notification only when both metrics exceed their threshold values?

A. Install the Amazon CloudWatch agent on the EC2 instances. Create a metric alarm for the disk space and a metric alarm for the DiskReadOps metric. Create a composite alarm that includes the two metric alarms to publish a notification to the SNS topic.
B. Install the Amazon CloudWatch agent on the EC2 instances. Create a metric alarm for the disk space and a metric alarm for the DiskReadOps metric. Configure each alarm to publish a notification to the SNS topic.
C. Create a metric alarm for the EBSByteBalance% metric and a metric alarm for the DiskReadOps metric. Create a composite alarm that includes the two metric alarms to publish a notification to the SNS topic.
D. Configure detailed monitoring for the EC2 instances. Create a metric alarm for the disk space and a metric alarm for the DiskReadOps metric. Create a composite alarm that includes the two metric alarms to publish a notification to the SNS topic.

#100 (Accuracy: 100% / 3 votes)

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. Adjust the Auto Scaling group to scale faster when a high number of messages is in the queue.
B. Use the Amazon Simple Notification Service (Amazon SNS) fanout feature with Amazon SQS to send the notifications in parallel to all the C2 instances
C. Add an Amazon DynamoDB stream to accelerate the message processing
D. Create a queue for alarm notifications and a queue for information notifications. Update the application to collect messages from the alarm notifications queue first.

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