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A company's application on EC2 instances relies on a Single-AZ RDS for MySQL DB instance. The SysOps administrator needs to ensure failover to minimize downtime.
A SysOps administrator creates two VPCs, VPC1 and VPC2, in a company's AWS account The SysOps administrator deploys a Linux Amazon EC2 instance in VPC1 and deploys an Amazon RDS for MySQL DB instance in VPC2. The DB instance is deployed in a private subnet. An application that runs on the EC2 instance needs to connect to the database. What should the SysOps administrator do to give the EC2 instance the ability to connect to the database?
A company needs to monitor the disk utilization of Amazon Elastic Block Store (Amazon EBS) volumes The EBS volumes are attached to Amazon EC2 Linux Instances A SysOps administrator must set up an Amazon CloudWatch alarm that provides an alert when disk utilization increases to more than 80%. Which combination of steps must the SysOps administrator lake lo meet these requirements? (Select THREE.)
A company uses AWS CloudFormation to manage a stack of Amazon EC2 instances on AWS. A SysOps administrator needs to keep the instances and all of the instances' data, even if someone deletes the stack. Which solution will meet these requirements?
A SysOps administrator is optimizing the cost of a workload. The workload is running in multiple AWS Regions and is using AWS Lambda with Amazon EC2 On-Demand Instances for the compute. The overall usage is predictable. The amount of compute that is consumed in each Region varies, depending on the users' locations. Which approach should the SysOps administrator use to optimize this workload?
The SysOps administrator must dynamically reference the latest AMI ID from Systems Manager Parameter Store in CloudFormation templates for new AMI versions.
A company has an application that collects notifications from thousands of alarm systems. The notifications include alarm notifications and information notifications. The information notifications include the system arming processes, disarming processes, and sensor status. All notifications are kept as messages in an Amazon Simple Queue Service (Amazon SQS) queue. Amazon EC2 instances that are in an Auto Scaling group process the messages. A SysOps administrator needs to implement a solution that prioritizes alarm notifications over information notifications. Which solution will meet these requirements?
A team of developers is using several Amazon S3 buckets as centralized repositories. Users across the world upload large sets of files to these repositories. The development team's applications later process these files. A SysOps administrator sets up a new S3 bucket. DOC-EXAMPLE-BUCKET, to support a new workload. The new S3 bucket also receives regular uploads of large sets of files from users worldwide. When the new S3 bucket is put into production, the upload performance from certain geographic areas is lower than the upload performance that the existing S3 buckets provide. What should the SysOps administrator do to remediate this issue?
The SysOps administrator must modify the AWS Config rule that deletes noncompliant SSH inbound rules to update the rule to allow SSH from specific trusted IP addresses instead.
A company is running a serverless application on AWS Lambda. The application stores data in an Amazon RDS for MySQL DB instance. Usage has steadily increased, and recently there have been numerous "too many connections" errors when the Lambda function attempts to connect to the database. The company already has configured the database to use the maximum max_connections value that is possible. What should a SysOps administrator do to resolve these errors?

Question 318 - SOA-C02 discussion

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A company runs a web application on three Amazon EC2 instances behind an Application Load Balancer (ALB). Web traffic increases significantly during the same 9-hour period every day and causes a decrease in the application's performance. A SysOps administrator must scale the application ahead of the changes in demand to accommodate the increased traffic.

Which solution will meet these requirements?

A.
Create an Amazon CloudWatch alarm to monitor application latency. Configure an alarm action to increase the size of each EC2 instance if the latency threshold is reached.
Answers
A.
Create an Amazon CloudWatch alarm to monitor application latency. Configure an alarm action to increase the size of each EC2 instance if the latency threshold is reached.
B.
Create an Amazon EventBridge rule to monitor application latency. Configure the rule to add an EC2 instance to the ALB if the latency threshold is reached
Answers
B.
Create an Amazon EventBridge rule to monitor application latency. Configure the rule to add an EC2 instance to the ALB if the latency threshold is reached
C.
Deploy the application to an EC2 Auto Scaling group that uses a target tracking scaling policy. Attach the ALB to the Auto Scaling group.
Answers
C.
Deploy the application to an EC2 Auto Scaling group that uses a target tracking scaling policy. Attach the ALB to the Auto Scaling group.
D.
Deploy the application to an EC2 Auto Scaling group that uses a scheduled scaling policy. Attach the ALB to the Auto Scaling group.
Answers
D.
Deploy the application to an EC2 Auto Scaling group that uses a scheduled scaling policy. Attach the ALB to the Auto Scaling group.
Suggested answer: D

Explanation:

For predictable, significant traffic increases during a specific time period every day:

EC2 Auto Scaling Group: Set up an Auto Scaling group for the EC2 instances running the web application. This group automatically adjusts the number of instances based on policies defined.

Scheduled Scaling Policy: Use a scheduled scaling policy to pre-emptively increase the number of instances before the expected increase in traffic each day. Scheduled scaling allows you to specify the scaling actions to occur at specific times, based on known or expected demand patterns.

Attach to ALB: Ensure the Auto Scaling group is attached to the Application Load Balancer, which will distribute incoming traffic across the dynamically adjusted pool of EC2 instances.

This approach ensures that the application scales up resources ahead of the expected load, maintaining performance and user experience without manual intervention.

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asked 16/09/2024
Dylan Johnson
42 questions
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