A company hosts several write-intensive applications. These applications use a MySQL database that runs on a single Amazon EC2 instance. The company asks a SysOps administrator to implement a highly available database solution that is ideal for multi-tenant workloads.

Which solution should the SysOps administrator implement to meet these requirements?

A. Create a second EC2 instance for MySQL. Configure the second instance to be a read replica.

B. Migrate the database to an Amazon Aurora DB cluster. Add an Aurora Replica.

C. Migrate the database to an Amazon Aurora multi-master DB cluster.

D. Migrate the database to an Amazon RDS for MySQL DB instance.

A company plans to run a public web application on Amazon EC2 instances behind an Elastic Load Balancer (ELB). The company's security team wants to protect the website by using AWS Certificate Manager (ACM) certificates The ELB must automatically redirect any HTTP requests to HTTPS.

Which solution will meet these requirements?

A. Create an Application Load Balancer that has one HTTPS listener on port 80 Attach an SSLTLS certificate to listener port 80 Create a rule to redirect requests from HTTP to HTTPS

B. Create an Application Load Balancer that has one HTTP listener on port 80 and one HTTPS protocol listener on port 443 Attach an SSL TLS certificate to listener port 443 Create a rule to redirect requests from port 80 to port 443

C. Create an Application Load Balancer that has two TCP listeners on port 80 and port 443 Attach an SSLTLS certificate to listener port 443 Create a rule to redirect requests from port 80 to port 443

D. Create a Network Load Balancer that has two TCP listeners on port 80 and port 443 Attach an SSLTLS certificate to listener port 443 Create a rule to redirect requests from port 80 to port 443

A company is using Amazon Elastic File System (Amazon EFS) to share a file system among several Amazon EC2 instances. As usage increases, users report that file retrieval from the EFS file system is slower than normal. Which action should a SysOps administrator take to improve the performance of the file system?

A. Configure the file system for Provisioned Throughput.

B. Enable encryption in transit on the file system.

C. Identify any unused files in the file system, and remove the unused files.

D. Resize the Amazon Elastic Block Store (Amazon EBS) volume of each of the EC2 instances.

A company's SysOps administrator deploys four new Amazon EC2 instances by using the standard Amazon Linux 2 Amazon Machine Image (AMI). The company needs to be able to use AWS Systems Manager to manage the instances The SysOps administrator notices that the instances do not appear in the Systems Manager console

What must the SysOps administrator do to resolve this issue?

A. Connect to each instance by using SSH Install Systems Manager Agent on each instance Configure Systems Manager Agent to start automatically when the instances start up

B. Use AWS Certificate Manager (ACM) to create a TLS certificate Import the certificate into each instance Configure Systems Manager Agent to use the TLS certificate for secure communications

C. Connect to each instance by using SSH Create an ssm-user account Add the ssm-user account to the /etcsudoers d directory

D. Attach an IAM instance profile to the instances Ensure that the instance profile contains the AmazonSSMManagedinstanceCore policy

A company uses AWS Cloud Formation templates to deploy cloud infrastructure. An analysis of all the company's templates shows that the company has declared the same components in multiple templates. A SysOps administrator needs to create dedicated templates that have their own parameters and conditions for these common components.

Which solution will meet this requirement?

A. Develop a CloudFormaiion change set.

B. Develop CloudFormation macros.

C. Develop CloudFormation nested stacks.

D. Develop CloudFormation stack sets.