A user has two EC2 instances running in two separate regions. The user is running an internal memory
management tool, which captures the data and sends it to CloudWatch in US East, using a CLI with the same namespace and metric. Which of the below mentioned options is true with respect to the above statement?

• A.The setup will not work as CloudWatch cannot receive data across regions
• B.CloudWatch will receive and aggregate the data based on the namespace and metric
• C.CloudWatch will give an error since the data will conflict due to two sources
• D.CloudWatch will take the data of the server, which sends the data first

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You have a web-style application with a stateless but CPU and memory-intensive web tier running on a cc2 8xlarge EC2 instance inside of a VPC The instance when under load is having problems returning requests within the SLA as defined by your business The application maintains its state in a DynamoDB table, but the data tier is properly provisioned and responses are consistently fast.
How can you best resolve the issue of the application responses not meeting your SLA?

• A.Add another cc2 8xlarge application instance, and put both behind an Elastic Load Balancer
• B.Move the cc2 8xlarge to the same Availability Zone as the DynamoDB table
• C.Cache the database responses in ElastiCache for more rapid access
• D.Move the database from DynamoDB to RDS MySQL in scale-out read-replica configuration

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An application you maintain consists of multiple EC2 instances in a default tenancy VPC. This application has undergone an internal audit and has been determined to require dedicated hardware for one instance. Your compliance team has given you a week to move this instance to single-tenant hardware.
Which process will have minimal impact on your application while complying with this requirement?

• A.Create a new VPC with tenancy=dedicated and migrate to the new VPC
• B.Use ec2-reboot-instances command line and set the parameter "dedicated=true"
• C.Right click on the instance, select properties and check the box for dedicated tenancy
• D.Stop the instance, create an AMI, launch a new instance with tenancy=dedicated, and terminate the old instance

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An Auto Scaling group scales up and down based on Average CPU Utilization. The alarm is set to trigger a
scaling event when the Average CPU Utilization exceeds 80% for 5 minutes. Currently, the Average CPU has
been 95% for over two hours and new instances are not being added.
What could be the issue?

• A.In the field Suspend Process, "ReplacesUnhealthy" has been selected.
• B.A scheduled scaling action has not been defined.
• C.The Health Check Grace Period is set to less than 300 seconds.
• D.The maximum size of the Auto Scaling group is below or at the current group size.

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A user has created a VPC with public and private subnets.
The VPC has CIDR 20.0.0.0/16.
The private subnet uses CIDR 20.0.1.0/24 and the public subnet uses CIDR 20.0.0.0/24.
The user is planning to host a web server in the public subnet (port 80. and a DB server in the private subnet (port 3306..
The user is configuring a security group of the NAT instance.
Which of the below mentioned entries is not required for the NAT security group?

• A.For Inbound allow Source: 20.0.1.0/24 on port 80
• B.For Outbound allow Destination: 0.0.0.0/0 on port 80
• C.For Inbound allow Source: 20.0.0.0/24 on port 80
• D.For Outbound allow Destination: 0.0.0.0/0 on port 443

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