Question 21
A company hosts a static website on Amazon S3. The website is served by an Amazon CloudFront distribution with a default TTL of 86,400 seconds.
The company recently uploaded an updated version of the website to Amazon S3. However, users still see the old content when they refresh the site. A SysOps administrator must make the new version of the website visible to users as soon as possible.
Which solution meets these requirements?
A. Adjust the TTL value for the DNS CNAME record that is pointing to the CloudFront distribution.
B. Create an invalidation on the CloudFront distribution for the old S3 objects.
C. Create a new CloudFront distribution. Update the DNS records to point to the new CloudFront distribution.
D. Update the DNS record for the website to point to the S3 bucket.
Question 22
A SysOps administrator is responsible for managing a company's cloud infrastructure with AWS CloudFormation. The SysOps administrator needs to create a single resource that consists of multiple AWS services. The resource must support creation and deletion through the CloudFormation console.
Which CloudFormation resource type should the SysOps administrator create to meet these requirements?
A. AWS::EC2::Instance with a cfn-init helper script
B. AWS::OpsWorks::Instance
C. AWS::SSM::Document
D. Custom::MyCustomType
Question 23
A new website will run on Amazon EC2 instances behind an Application Load Balancer. Amazon Route 53 will be used to manage DNS records.
What type of record should be set in Route 53 to point the website's apex domain name (for example, `company.
com`) to the Application Load Balancer?
A. CNAME
B. SOA
C. TXT
D. ALIAS
Question 24
A company is implementing security and compliance by using AWS Trusted Advisor. The company's SysOps team is validating the list of Trusted Advisor checks that it can access.
Which factor will affect the quantity of available Trusted Advisor checks?
A. Whether at least one Amazon EC2 instance is in the running state
B. The AWS Support plan
C. An AWS Organizations service control policy (SCP)
D. Whether the AWS account root user has multi-factor authentication (MFA) enabled
Question 25
A SysOps administrator is investigating issues on an Amazon RDS for MariaDB DB instance. The SysOps administrator wants to display the database load categorized by detailed wait events.
How can the SysOps administrator accomplish this goal?
A. Create an Amazon CloudWatch dashboard.
B. Enable Amazon RDS Performance Insights.
C. Enable and configure Enhanced Monitoring.
D. Review the database logs in Amazon CloudWatch Logs.
Question 26
A company is planning to host an application on a set of Amazon EC2 instances that are distributed across multiple Availability Zones. The application must be able to scale to millions of requests each second.
A SysOps administrator must design a solution to distribute the traffic to the EC2 instances. The solution must be optimized to handle sudden and volatile traffic patterns while using a single static IP address for each Availability Zone.
Which solution will meet these requirements?
A. Amazon Simple Queue Service (Amazon SQS) queue
B. Application Load Balancer
C. AWS Global Accelerator
D. Network Load Balancer
Question 27
A SysOps administrator is using AWS CloudFormation StackSets to create AWS resources in two AWS Regions in the same AWS account. A stack operation fails in one Region and returns the stack instance status of OUTDATED.
What is the cause of this failure?
A. The CloudFormation template changed on the local disk and has not been submitted to CloudFormation.
B. The CloudFormation template is trying to create a global resource that is not unique.
C. The stack has not yet been deployed to the Region.
D. The SysOps administrator is using an old version of the CloudFormation API.
Question 28
A SysOps administrator must configure Amazon S3 to host a simple nonproduction webpage. The SysOps administrator has created an empty S3 bucket from theAWS Management Console. The S3 bucket has the default configuration in place.
Which combination of actions should the SysOps administrator take to complete this process? (Choose two.)
A. Configure the S3 bucket by using the "Redirect requests for an object" functionality to point to the bucket root URL.
B. Turn off the "Block all public access" setting. Allow public access by using a bucket ACL that contains WEBSITE.
C. Turn off the "Block all public access" setting. Allow public access by using a bucket ACL that allows access to the AuthenticatedUsers grantee.
D. Turn off the "Block all public access" setting. Set a bucket policy that allows "Principal": the s3:GetObject action.
E. Create an index.html document. Configure static website hosting, and upload the index document to the S3 bucket.
Question 29
A company is using an Amazon Aurora MySQL DB cluster that has point-in-time recovery, backtracking, and automatic backup enabled. A SysOps administrator needs to be able to roll back the DB cluster to a specific recovery point within the previous 72 hours. Restores must be completed in the same production DB cluster.
Which solution will meet these requirements?
A. Create an Aurora Replica. Promote the replica to replace the primary DB instance.
B. Create an AWS Lambda function to restore an automatic backup to the existing DB cluster.
C. Use backtracking to rewind the existing DB cluster to the desired recovery point.
D. Use point-in-time recovery to restore the existing DB cluster to the desired recovery point.
Question 30
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. Extend the file system with operating system-level tools to use the new storage capacity.
B. Reattach the EBS volume to the EC2 instance.
C. Reboot the EC2 instance that is attached to the EBS volume.
D. Take a snapshot of the EBS volume. Replace the original volume with a volume that is created from the snapshot.
