Skip to Content

SAP-C02: Resolving Network Route Issues in AWS Auto Scaling

By: Author Alex Lim

Posted on

Categories Exam

Learn how to effectively manage network routes in an AWS Auto Scaling environment. Understand the role of Amazon CloudWatch, AWS Lambda, and CloudFormation in maintaining network stability.

Table of Contents

Question

A company wants to run a custom network analysis software package to inspect traffic as traffic leaves and enters a VPC. The company has deployed the solution by using AWS CloudFormation on three Amazon EC2 instances in an Auto Scaling group. All network routing has been established to direct traffic to the EC2 instances.

Whenever the analysis software stops working, the Auto Scaling group replaces an instance. The network routes are not updated when the instance replacement occurs.

Which combination of steps will resolve this issue? (Choose three.)

A. Create alarms based on EC2 status check metrics that will cause the Auto Scaling group to replace the failed instance.
B. Update the CloudFormation template to install the Amazon CloudWatch agent on the EC2 instances. Configure the CloudWatch agent to send process metrics for the application.
C. Update the CloudFormation template to install AWS Systems Manager Agent on the EC2 instances. Configure Systems Manager Agent to send process metrics for the application.
D. Create an alarm for the custom metric in Amazon CloudWatch for the failure scenarios. Configure the alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic.
E. Create an AWS Lambda function that responds to the Amazon Simple Notification Service (Amazon SNS) message to take the instance out of service. Update the network routes to point to the replacement instance.
F. In the CloudFormation template, write a condition that updates the network routes when a replacement instance is launched.

Answer

D. Create an alarm for the custom metric in Amazon CloudWatch for the failure scenarios. Configure the alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic.
E. Create an AWS Lambda function that responds to the Amazon Simple Notification Service (Amazon SNS) message to take the instance out of service. Update the network routes to point to the replacement instance.
F. In the CloudFormation template, write a condition that updates the network routes when a replacement instance is launched.

Explanation

The correct combination of steps to resolve the issue are:

  1. Option D: Create an alarm for the custom metric in Amazon CloudWatch for the failure scenarios. Configure the alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic. This will ensure that an alert is triggered whenever the analysis software stops working.
  2. Option E: Create an AWS Lambda function that responds to the Amazon Simple Notification Service (Amazon SNS) message to take the instance out of service. Update the network routes to point to the replacement instance. This will ensure that the network routes are updated whenever an instance is replaced.
  3. Option F: In the CloudFormation template, write a condition that updates the network routes when a replacement instance is launched. This will ensure that the network routes are automatically updated whenever a new instance is launched by the Auto Scaling group.

Amazon AWS Certified Solutions Architect – Professional SAP-C02 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Amazon AWS Certified Solutions Architect – Professional SAP-C02 exam and earn Amazon AWS Certified Solutions Architect – Professional SAP-C02 certification.