A company has developed a new memory-intensive application that is deployed to a large Amazon EC2 Linux fleet. The company is concerned about potential memory exhaustion, so the development team wants to monitor memory usage by using Amazon CloudWatch.
What is the MOST operationally efficient way to accomplish this goal?

• A.Install the CloudWatch monitoring scripts on the EC2 instances to collect and send metrics to CloudWatch.
• B.Install the CloudWatch agent on the EC2 instances to collect and send metrics to CloudWatch.
• C.Deploy the application to memory optimized EC2 instances.
  Use the CloudWatch MemoryUtilization metric.
• D.Create an AWS Lambda function to capture memory utilization of the EC2 instances.
  Schedule the Lambda function with Amazon EventBridge (Amazon CloudWatch Events).

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A SysOps Administrator is notified that an automated failover of an Amazon RDS database has occurred.
What are possible causes for this? (Choose two.)

• A.A write contention on the database.
• B.Database corruption errors.
• C.A read contention on the database.
• D.The database instance type was changed.
• E.A storage failure on the primary database.

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Can you configure multiple Load Balancers with a single Auto Scaling group?

• A.Yes, you can provide the ELB is configured with Amazon AppStream.
• B.No
• C.Yes
• D.Yes, you can but only if it is configured with Amazon Redshift.

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Fill in the blanks: One of the basic characteristics of security groups for your VPC is that you
______ .

• A.can specify allow rules as well as deny rules
• B.can neither specify allow rules nor deny rules
• C.can specify allow rules, but not deny rules
• D.can specify deny rules, but not allow rules

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A user has configured CloudWatch monitoring on an EBS backed EC2 instance. If the user has not attached any additional device, which of the below mentioned metrics will always show a 0 value?

• A.DiskReadBytes
• B.NetworkIn
• C.NetworkOut
• D.CPUUtilization

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