A SysOps administrator receives an alert from Amazon GuardDuty about suspicious network activity on an Amazon FC2 instance. The GuardDuty finding lists a new external IP address as a traffic destination. The SysOps administrator does not recognize the external IP address. The SysOps administrator must block traffic to the external IP address that GuardDuty identified Which solution will meet this requirement?

• A.Use VPC flow logs with Amazon Athena to block traffic to the external IP address
• B.Create a new security group to block traffic to the external IP address. Assign the new security group to the EC2 instance
• C.Create a new security group to block traffic to the external IP address Assign the new security group to the entire VPC
• D.Create a network ACL Add an outbound deny rule tor traffic to the external IP address

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A company is deploying a third-party unit testing solution that is delivered as an Amazon EC2 Amazon Machine Image (AMI). All system configuration data is stored in Amazon DynamoDB. The testing results are stored in Amazon S3.
A minimum of three EC2 instances are required to operate the product. The company's testing team wants to use an additional three EC2 Instances when the Spot Instance prices are at a certain threshold. A SysOps administrator must Implement a highly available solution that provides this functionality.
Which solution will meet these requirements with the LEAST operational overhead?

• A.Define an Amazon EC2 Auto Scaling group by using a launch configuration. Use the provided AMI In the launch configuration. Configure three On-Demand Instances and three Spot Instances. Configure a maximum Spot Instance price In the launch configuration.
• B.Define an Amazon EC2 Auto Scaling group by using a launch template. Use the provided AMI in the launch template. Configure three On-Demand Instances and three Spot Instances. Configure a maximum Spot Instance price In the launch template.
• C.Define two Amazon EC2 Auto Scaling groups by using launch configurations. Use the provided AMI in the launch configurations. Configure three On-Demand Instances for one Auto Scaling group. Configure three Spot Instances for the other Auto Scaling group. Configure a maximum Spot Instance price in the launch configuration for the Auto Scaling group that has Spot Instances.
• D.Define two Amazon EC2 Auto Scaling groups by using launch templates. Use the provided AMI in the launch templates. Configure three On-Demand

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A company uses AWS Organizations to manage multiple AWS accounts with consolidated billing enabled. Organization member account owners want the benefits of Reserved Instances (RIs) but do not want to share RIs with other accounts.
Which solution will meet these requirements?

• A.Purchase RIs in individual member accounts. Disable Rl discount sharing in the management account.
• B.Purchase RIs in individual member accounts. Disable Rl discount sharing in the member accounts.
• C.Purchase RIs in the management account. Disable Rl discount sharing in the management account.
• D.Purchase RIs in the management account. Disable Rl discount sharing in the member accounts.

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A user working in the Amazon EC2 console increased the size of an Amazon Elastic Block Store (Amazon EBS) volume attached to an Amazon EC2 Windows instance. The change is not reflected in the file system.
What should a SysOps administrator do to resolve this issue?

• A.Reboot the EC2 instance that is attached to the EBS volume.
• B.Take a snapshot of the EBS volume. Replace the original volume with a volume that is created from the snapshot.
• C.Reattach the EBS volume to the EC2 instance.
• D.Extend the file system with operating system-level tools to use the new storage capacity.

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A SysOps administrator noticed that the cache hit ratio for an Amazon CloudFront distribution is less than 10%.
Which collection of configuration changes will increase the cache hit ratio for the distribution? (Select TWO.)

• A.Enable automatic compression of objects in the Cache Behavior Settings.
• B.Ensure that only required cookies, query strings, and headers are forwarded in the Cache Behavior Settings.
• C.Increase the CloudFront time to live (TTL) settings in the Cache Behavior Settings.
• D.Change the Viewer Protocol Policy to use HTTPS only.
• E.Configure the distribution to use presigned cookies and URLs to restrict access to the distribution.

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