Amazon AWS Certified SysOps Administrator - Associate Exam Practice Questions (P. 2)

GPT-4o - Answer

For optimizing cost while ensuring availability in the given infrastructure, the correct choices involve understanding the usage pattern of control and task nodes. Control nodes, due to their constant requirement, are best served through EC2 Instance Savings Plans, offering predictable billing and lower costs while maintaining accessibility. Meanwhile, task nodes, operational only for specific periods, are ideal candidates for Spot Instances to capitalize on lower costs. Using On-Demand Instances as fallbacks guarantees task execution if Spot Instances are unavailable. This dual strategy provides a well-rounded approach to cost-efficiency while ensuring operational needs are met consistently.

GPT-4o - Answer

Opt for creating a CloudWatch alarm that notifies the team through an Amazon SNS topic when there are no Lambda function invocations for an hour. This solution leverages the existing infrastructure with minimal components, making it operationally efficient and straightforward in scenarios where the expected data file is missing. Remember to set up the alarm to treat missing data as an alerting condition. This ensures prompt and accurate notifications without complicating system architecture.

GPT-4o - Answer

To effectively manage and tag "No Tagkey" resources, using the Tag Editor is highly recommended. The Tag Editor tool allows for bulk searching and tagging of resources across multiple regions and services. This capability is crucial for quickly identifying untagged resources and assigning necessary tags, ensuring that all elements are accounted for in reports and aligning with best practices in AWS management. This approach not only aids in organization but also enhances tracking and management of costs effectively.

GPT-4o - Answer

The ideal way to track CPU usage by specific processes on an EC2 instance is to use the Amazon CloudWatch agent's procstat plugin. This tool enables detailed monitoring of individual process metrics with minimal overhead, allowing you to pinpoint which processes are consuming excessive CPU resources specifically during those critical 5-minute windows you've identified. This approach avoids the need for constant manual monitoring or custom script deployments, streamlining the process effectively.

GPT-4o - Answer

The total required storage for the snapshots comes to 16 GiB. Here’s the breakdown: the initial full snapshot captures the entire 10 GiB of the EBS volume. The second snapshot, being incremental, only captures the 4 GiB of data that changed, and the third snapshot further captures 2 GiB of additional data. Thus, by adding these together (10 GiB from the first snapshot, 4 GiB from the second, and 2 GiB from the third), the cumulative storage requirement is 16 GiB. This reflects EBS's way of optimizing data storage through incremental snapshots, where only new or altered data blocks are stored in subsequent snapshots.

GPT-4o - Answer

To effectively manage breakdown of charges by environment with tools already in place, the SysOps administrator should utilize the Tag Editor to filter, map, and categorize resource groups according to the tags that indicate their environments. This method leverages existing tagging to organize and visualize expenses by environment directly, without requiring further activation or permissions adjustments for tags. It strategically utilizes tagging to both manage resources and track costs efficiently, directly aligning with operational needs.

GPT-4o - Answer

The DependsOn attribute in AWS CloudFormation is designed specifically to control the order of resource creation. By adding the DependsOn attribute to the EC2 instance and specifying the RDS instance as the dependency, you ensure that CloudFormation will not begin the provisioning of the EC2 instance until the RDS database instance has been successfully created. This setup is crucial in scenarios where your compute resources must connect to a database immediately upon startup without encountering connectivity issues due to the database not being fully set up.