Question 1

A company has a web application that is hosted on Amazon EC2 instances. The company is deploying the application into multiple AWS Regions. The application consists of dynamic content such as WebSocket-based real-time product updates. The company uses Amazon Route 53 to manage all DNS records. Which solution will provide multi-Region access to the application with the LEAST latency?

Options :

A : Deploy an Application Load Balancer (ALB) in front of the EC2 instances in each Region. Create a Route 53 A record with a latency-based routing policy. Add IP addresses of the ALBs as the value of the record.

B : Deploy an Application Load Balancer (ALB) in front of the EC2 instances in each Region. Deploy an Amazon CloudFront distribution with an origin group that contains the ALBs as origins. Create a Route 53 alias record that points to the CloudFront distribution's DNS address.

C : Deploy a Network Load Balancer (NLB) in front of the EC2 instances in each Region. Create a Route 53 A record with a multivalue answer routing policy. Add IP addresses of the NLBs as the value of the record.

D : Deploy a Network Load Balancer (NLB) in front of the EC2 instances in each Region. Deploy an AWS Global Accelerator standard accelerator with an endpoint group for each NLB. Create a Route 53 alias record that points to the accelerator's DNS address.

Answer: A

Question 2

An online data analytics application is launched to 12 On-Demand EC2 instances across three Availability Zones using a golden AMI in AWS. Each instance has only 10% utilization after business hours but increases to 30% utilization during peak hours. There are also some third-party applications that use the application from all over the globe with no specific schedule. In the morning, there is always a sudden CPU utilization increase on the EC2 instances due to the number of users logging in to use the application. However, its CPU utilization usually stabilizes after a few hours. A DevOps Engineer has been instructed to reduce costs and improve the overall reliability of the system.

Which among the following options provides the MOST suitable solution in this scenario?

Options :

A : Launch a group of Scheduled Reserved Instances that regularly run before and after the peak hours. Integrate CloudWatch Events and AWS Lambda to regularly stop nine instances after the peak hours every day and restart the nine instances before the business day begins.

B : Set up two Amazon Eventbridge rules and two Lambda functions. Configure each Amazon Eventbridge rule to invoke a Lambda function and regularly run before and after the peak hours. The first function should stop nine instances after the peak hours end while the second function should restart the nine instances before the business day begins

C : Set up an Auto Scaling group using the golden AMI with a scaling action based on the CPU Utilization average. Configure a scheduled action for the group to adjust the minimum number of Amazon EC2 instances to three after business hours end, and reset to six before business hours begin.

D : Set up two AWS Config rules and two Lambda functions. Configure each rule to invoke a Lambda function and regularly run before and after the peak hours. The first function should stop nine instances after the peak hours end while the second function should restart the nine instances before the business day begins.

Answer: C

Question 3

A company has multiple development teams in different business units that work in a shared single AWS account All Amazon EC2 resources that are created in the account must include tags that specify who created the resources. The tagging must occur within the first hour of resource creation. A DevOps engineer needs to add tags to the created resources that Include the user ID that created the resource and the cost center ID The DevOps engineer configures an AWS Lambda function With the cost center mappings to tag the resources. The DevOps engineer also sets up AWS CloudTrail in the AWS account. An Amazon S3 bucket stores the CloudTrail event logs Which solution will meet the tagging requirements?

Options :

A : Create an S3 event notification on the S3 bucket to invoke the Lambda function for s3.ObJectTagging:Put events. Enable bucket versioning on the S3 bucket.

B : Enable server access logging on the S3 bucket. Create an S3 event notification on the S3 bucket for s3. ObjectTaggIng.• events

C : Create a recurring hourly Amazon EventBridge scheduled rule that invokes the Larnbda function. Modify the Lambda function to read the logs from the S3 bucket

D : Create an Amazon EventBridge rule that uses Amazon EC2 as the event source. Configure the rule to match events delivered by CloudTraiI. Configure the rule to target the Lambda function

Answer: D

Question 4

A telecommunications company has a web portal that requires a cross-region failover. The portal stores its data in an Amazon Aurora database in the primary region (us-west-1) and the Parallel Query feature is also enabled in the database to optimize some of the I/O and computation involved in processing data-intensive queries. The portal uses Route 53 to direct customer traffic to the active region.

Which among the options below should be taken to MINIMIZE downtime of the portal in the event that the primary database fails?

Options :

A : Create a CloudWatch Events rule to periodically invoke a Lambda function that checks the health of the primary Amazon Aurora database every hour. Configure the Lambda function to promote the read replica as the primary if a failure was detected. Update the Route 53 record to redirect traffic from the primary to the secondary region.

B : Configure the Route 53 record to balance traffic between both regions equally using the Failover routing policy. Enable the Aurora multi-master option and set up a Route 53 health check to analyze the health of the databases. Set the Route 53 record to automatically direct all traffic to the secondary region when a primary database fails.

C : Launch a read replica of the primary database to the second region. Set up Amazon RDS Event Notification to publish status updates to an SNS topic. Create a Lambda function subscribed to the topic to monitor database health. Configure the Lambda function to promote the read replica as the primary in the event of a failure. Update the Route 53 record to redirect traffic from the primary region to the secondary region.

D : Set up CloudWatch to monitor the status of the Amazon Aurora database. Create a CloudWatch Events rule to send a Slack message to the SysOps Team using Amazon SNS in the event of a database outage. Instruct the SysOps team to redirect traffic to an S3 static website that displays a downtime message. Manually promote the read replica as the primary instance and verify the portal-s status. Redirect traffic from the S3 website to the secondary region.

Answer: C

Question 5

A DevOps team is merging code revisions for an application that uses an Amazon RDS Multi-AZ DB cluster for its production database. The DevOps team uses continuous integration to periodically verify that the application works. The DevOps team needs to test the changes before the changes are deployed to the production database. Which solution will meet these requirements'?

Options :

A : Use a buildspec file in AWS CodeBuild to restore the DB cluster from a snapshot of the production database run integration tests, and drop the restored database after verification.

B : Deploy the application to production. Configure an audit log of data control language (DCL) operations to capture database activities to perform if verification fails.

C : Create a snapshot of the DB duster before deploying the application Use the Update requires Replacement property on the DB instance in AWS CloudFormation to deploy the application and apply the changes.

D : Ensure that the DB cluster is a Multi-AZ deployment. Deploy the application with the updates. Fail over to the standby instance if verification fails.

Answer: A

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