Amazon SOA-C03 Dumps - Pass AWS Certified CloudOps Engineer - Associate Exam in First Attempt 2026

The CloudWatch agent procstat plugin is specifically designed to collect per-process metrics such as CPU usage by process ID. It allows continuous, automated monitoring without manual intervention and integrates directly with CloudWatch.

Default CloudWatch metrics provide only instance-level CPU utilization and do not expose process-level details. Manual logins and Lambda-based polling introduce unnecessary operational overhead and are not scalable.

Therefore, configuring the procstat plugin is the most efficient solution.

By default, a newly created AWS Lambda function is not attached to a customer VPC. In its default configuration, Lambda runs in an AWS-managed network environment and can reach public internet endpoints, but it does not automatically have network-level connectivity into private subnets within a VPC. Accessing an Amazon RDS instance that is placed in a private subnet requires the Lambda function to be configured for VPC access. This means selecting the target VPC, choosing subnets (typically private subnets with appropriate routing), and associating one or more security groups with the Lambda function's elastic network interfaces (ENIs). Once configured, Lambda creates ENIs in the selected subnets and uses them to communicate with resources such as RDS inside the VPC.

In this scenario, the RDS database is in a private subnet and is reachable from within the VPC, but the Lambda function cannot connect. The most likely cause is that the function was created with default settings and therefore was not deployed into the VPC that contains the database. IAM permissions are not sufficient for network connectivity; IAM controls authorization to call AWS APIs, while VPC attachment and security groups control the network path.

Option A is incorrect because Lambda does not require an ''RDS destination'' setting; connectivity is established through VPC networking and the database endpoint. Option C is not supported by the prompt; there is no indication that the database is in a different VPC, and the default issue is usually ''not in a VPC at all.'' Option D is less likely because Lambda security groups allow all outbound traffic by default unless explicitly restricted; the more common default failure is lack of VPC configuration.

Therefore, the likely reason is that the Lambda function was not configured to run in the same VPC as the RDS instance.

Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Documents:

The requirement is to alert before throttling occurs. For a DynamoDB table in provisioned capacity mode, throttling happens when demand approaches or exceeds provisioned throughput. CloudWatch provides direct table metrics such as ConsumedReadCapacityUnits and ProvisionedReadCapacityUnits (and related utilization signals). Creating an alarm on ConsumedReadCapacityUnits with a threshold set close to the table's provisioned read capacity provides an early warning that the table is nearing its limit---before actual throttling prevents reads. The alarm can publish directly to the existing SNS topic so the operations team is notified proactively.

Option C and D focus on detecting throttling after it occurs by matching throttling exceptions in logs. That is reactive and violates ''before throttled.'' Option B (auto scaling) may reduce the likelihood of throttling, but it does not directly satisfy the alerting requirement and ''scaling events'' notifications are not a reliable proxy for ''approaching throttle'' (and may not fire early enough depending on scaling configuration). The simplest, most direct CloudOps approach is a CloudWatch alarm on consumption nearing provisioned capacity.

Amazon DynamoDB Developer Guide -- Provisioned capacity, throttling behavior, CloudWatch metrics

Amazon CloudWatch User Guide -- Alarms and SNS notifications

AWS SysOps Administrator Study Guide -- Monitoring DynamoDB and capacity planning

Amazon Aurora backtracking allows a DB cluster to be rewound to a specific point in time without creating a new DB cluster. This feature is designed for fast recovery from logical errors, such as accidental data changes, within a configured backtrack window. Because backtracking operates directly on the existing cluster, it satisfies the requirement that the restore occur in the same production DB cluster.

Point-in-time recovery (Option D) restores data by creating a new DB cluster, which violates the requirement. Option A involves promoting a replica, which does not allow rolling back to an arbitrary historical point. Option B introduces unnecessary complexity and is not supported for restoring directly into the same cluster.

Backtracking provides near-instant rollback and minimal operational disruption, making it the correct solution.

An alias record is the recommended Route 53 record type to map domain names (e.g., example.com) to AWS-managed resources such as an Application Load Balancer. Alias records are extension types of A or AAAA records that support AWS resources directly, providing automatic DNS integration and no additional query costs.

AWS documentation states:

''Use alias records to map your domain or subdomain to an AWS resource such as an Application Load Balancer, CloudFront distribution, or S3 website endpoint.''

A and AAAA records are used for static IP addresses, not load balancers. CNAME records cannot be used at the root domain (e.g., example.com). Thus, Option C is correct as it meets CloudOps networking best practices for scalable, managed DNS resolution to ALBs.