Amazon AWS Certified SysOps Administrator - Associate Exam Practice Questions (P. 1)

GPT-4o - Answer

To boost the high availability of the web application, utilizing multiple Availability Zones within the same region is a strategic move. This method does not just hedge against the downtime of a single Availability Zone but also optimizes the application’s resilience without leaving the regional boundary, hence maintaining data sovereignty and reducing latency. Note that options focusing merely on adjusting the number and capacity of instances (A and B) do not address potential zone-specific failures, while spreading instances across different regions (D) could unnecessarily complicate things.

GPT-4o - Answer

Scheduled scaling is the most operationally efficient choice for handling predictable high traffic periods, such as the reported weekend peak times. By pre-setting an increase in EC2 capacity prior to the anticipated peak hours, and a decrease afterwards, the system efficiently manages resource usage without manual intervention. This method directly addresses known traffic patterns, ensuring that the site’s performance remains optimal during critical times.

GPT-4o - Answer

The best approach for ensuring AWS CloudTrail is immediately re-enabled if it's turned off, without writing custom code, involves setting up an AWS Config rule. When CloudTrail configurations change, this rule triggers. Importantly, attach the AWS-ConfigureCloudTrailLogging automatic remediation action to this rule. This action handles the reactivation of CloudTrail autonomously, allowing for efficient and immediate compliance with the security guidelines that mandate CloudTrail to be actively logging without manual intervention.

GPT-4o - Answer

To resolve the issue of users experiencing random logouts in a stateful web application, enabling sticky sessions on the Application Load Balancer (ALB) target group is crucial. This configuration ensures that a user's session is maintained on the same EC2 instance within the Auto Scaling group, thereby preserving session state across requests. Additionally, configuring the CloudFront distribution to forward cookies to the origin (ALB) is essential. This action guarantees that the session cookie generated by the ALB, which is critical for maintaining the session, is recognized and respected by CloudFront, ensuring a consistent user experience without random logouts.

GPT-4o - Answer

Utilizing RDS Proxy with AWS Lambda can effectively manage and alleviate connection errors when your application's demand exceeds the database's 'max_connections' setting. By enabling connection pooling with RDS Proxy, each Lambda function invocation can utilize existing persistent connections. This approach significantly reduces the number of new connections created and smoothly scales with increasing Lambda function executions. This setup not only streamlines operations but also enhances the performance and stability of your serverless applications when interfacing with relational databases.

GPT-4o - Answer

To ensure high availability and placement of EC2 instances on distinct hardware, using a partition placement group is the most suitable approach. This type of placement group divides instances into different partitions (which can be on separate physical hardware) within an Availability Zone. Although traditionally confined to a single Region, AWS has expanded some functionalities that could potentially allow configurations across multiple Regions for broader geographical distribution and availability. Thus, while the typical setup involves single-region deployment, understanding evolving AWS capabilities is crucial. Always verify against the latest AWS documentation or features to align with current functionalities.

GPT-4o - Answer

Using mappings in an AWS CloudFormation template to assign region-specific AMI IDs ensures that the correct AMI is used regardless of the AWS region it is deployed in. This approach avoids the error encountered when an AMI ID from one region does not exist in another. Defining these mappings allows CloudFormation to dynamically select the appropriate AMI based on the deployment region and any other specified criteria, such as the environment type. This method enhances the template's portability and reduces manual errors in specifying AMI IDs.