[Trial] Professional Cloud DevOps Engineer Practice Exam (2021.04.01)

Google Cloud Certified
– Professional Cloud DevOps Engineer –
Practice Exam (Question 3)

Question 1

You support an application deployed on Google Compute Engine.
The application connects to a Google Cloud SQL instance to store and retrieve data . After an update to the application, users report errors showing database timeout messages. The number of concurrent active users remained stable. You need to find the most probable cause of the database timeout.
What should you do?

• A. Use Stackdriver Profiler to visualize the resources utilization throughout the application.
• B. Check the serial port logs of the Google Compute Engine instance.
• C. Use Google Cloud Security Scanner to see whether your Google Cloud SQL is under a Distributed Denial of Service (DDoS) attack.
• D. Determine whether there is an increased number of connections to the Google Cloud SQL instance.

Correct Answer: D

Question 2

Your company follows Site Reliability Engineering principles.
You are writing a postmortem for an incident, triggered by a software change, that severely affected users. You want to prevent severe incidents from happening in the future.
What should you do?

• A. Identify engineers responsible for the incident and escalate to their senior management.
• B. Design a policy that will require on-call teams to immediately call engineers and management to discuss a plan of action if an incident occurs.
• C. Ensure that test cases that catch errors of this type are run successfully before new software releases.
• D. Follow up with the employees who reviewed the changes and prescribe practices they should follow in the future.

Correct Answer: D

Question 3

You support a multi-region web service running on Google Kubernetes Engine (GKE) behind a Global HTTP’S Cloud Load Balancer (CLB).
For legacy reasons, user requests first go through a thirdparty Content Delivery Network (CDN). which then routes traffic to the CLB. You have already implemented an availability Service Level Indicator (SLI) at the CLB level. However, you want to increase coverage in case of a potential load balancer misconfiguration. CDN failure, or other global networking catastrophe.
Where should you measure this new SLI? (Choose 2 answers)

• A. Metrics exported from the application servers.
• B. Instrumentation coded directly in the client.
• C. A synthetic client that periodically sends simulated user requests.
• D. Your application servers’ logs.
• E. GKE health checks for your application servers.

Correct Answer: A, E