A DevOps Engineer Discovered a Sudden Spike in a Website's

question 57

Multiple Choice

A DevOps Engineer discovered a sudden spike in a website's page load times and found that a recent deployment occurred. A brief diff of the related commit shows that the URL for an external API call was altered and the connecting port changed from 80 to 443. The external API has been verified and works outside the application. The application logs show that the connection is now timing out, resulting in multiple retries and eventual failure of the call. Which debug steps should the Engineer take to determine the root cause of the issue?

• A) Check the VPC Flow Logs looking for denies originating from Amazon EC2 instances that are part of the web Auto Scaling group. Check the ingress security group rules and routing rules for the VPC.
• B) Check the existing egress security group rules and network ACLs for the VPC. Also check the application logs being written to Amazon CloudWatch Logs for debug information.
• C) Check the egress security group rules and network ACLs for the VPC. Also check the VPC flow logs looking for accepts originating from the web Auto Scaling group.
• D) Check the application logs being written to Amazon CloudWatch Logs for debug information. Check the ingress security group rules and routing rules for the VPC.

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Definitions:

Aggregate Demand

The total demand for all goods and services within a particular market or economy at a given overall price level and time.

Classical School

A branch of economic thought that emphasizes the importance of market forces in determining economic outcomes and the self-regulating nature of the economy.

Great Depression

A severe and prolonged global economic downturn that occurred in the 1930s, marked by massive unemployment and deflation.

Laissez-Faire

The philosophy that the private economy should function without any government interference.