Google Professional Cloud Developer Question 300
Select 3Google Cloud PlatformYou are a Google Cloud Developer working on a distributed microservices application hosted on Google Kubernetes Engine (GKE). Your team wants to implement chaos engineering principles to ensure the application is resilient to unexpected failures. Which actions should you take to implement effective failure testing in this environment?
- A
Introduce deliberate pod failures and monitor how the system recovers.
- B
Simulate network latency or packet loss between microservices.
- C
Increase the number of replicas in your deployment to handle more traffic during chaos tests.
- D
Test how the application behaves when a specific GKE node becomes unavailable.
- E
Deploy a custom load testing tool to simulate high traffic during regular operations.
Show answer and explanation
Correct answers: A, B, D
Explanation
Chaos engineering involves deliberately introducing failures or disruptions to a system to test its resilience and ability to recover. In this scenario, testing pod failures, simulating network issues, and verifying the system's behavior during node unavailability are critical practices. These tests help identify weaknesses and improve the overall reliability of the application.
- A. Correct.
Introducing pod failures is a key part of chaos engineering, as it tests the system's ability to recover from unexpected disruptions.
- B. Correct.
Simulating network latency or packet loss helps identify potential communication bottlenecks and ensures the system is resilient to degraded network conditions.
- C. Incorrect.
Increasing the number of replicas is a scaling strategy, not a chaos engineering practice. Chaos engineering focuses on testing system resilience to failures, not on improving traffic handling capacity.
- D. Correct.
Testing node unavailability is an important aspect of chaos engineering, as it helps verify the system's ability to handle infrastructure failures.
- E. Incorrect.
Simulating high traffic is related to load testing, which is different from chaos engineering. Chaos engineering focuses on introducing controlled failures, not just high traffic scenarios.