Preview Questions DevOps | Role Specific Skill

Question 1: You are leading a team that is migrating a legacy monolithic application to a cloud-native microservices architecture. How do you adapt your monitoring strategy to address the challenges and complexities of this new environment?

Which action should you take?

Choose only one option

Continue using traditional server and application monitoring tools to track individual microservices and their dependencies, relying on manual correlation to identify issues.

Implement distributed tracing to track requests across multiple microservices and identify performance bottlenecks or errors, providing end-to-end visibility into the system.

Utilize service mesh technologies to gain insights into service-to-service communication, network traffic patterns, and potential security risks.

Adopt a combination of traditional monitoring, distributed tracing, and service mesh observability to gain a holistic view of the microservices architecture and its dependencies.

Question 2: You have containerized an application, but it's running slower inside the container compared to its performance on a bare-metal server. How do you troubleshoot and improve its performance within the container?

Which action should you take?

Choose only one option

Increase the resource limits (CPU and memory) allocated to the container to provide more processing power.

Profile the application's performance inside the container to identify potential bottlenecks or resource contention issues.

Optimize the container image by reducing its size and minimizing unnecessary layers or dependencies.

Investigate potential network latency or I/O bottlenecks that might be affecting the container's performance.

Question 3: You are leading a large-scale infrastructure migration project involving thousands of servers and complex application dependencies. How do you ensure a smooth and error-free configuration management process during the migration?

Which action should you take?

Choose only one option

Develop a comprehensive migration plan with detailed configuration mapping and validation procedures.

Automate the configuration migration process using scripts and tools to minimize manual errors and ensure consistency.

Conduct thorough testing and validation in a staging environment before migrating configurations to production.

Establish a robust rollback strategy to quickly revert configuration changes in case of unexpected issues or failures.

Question 4: Your team is adopting a new configuration management tool to replace an existing legacy system. You are concerned about potential compatibility issues and the impact on existing configurations and workflows. How do you mitigate these risks and ensure a smooth transition?

Which action should you take?

Choose only one option

Conduct a thorough evaluation of the new tool's capabilities and compatibility with existing infrastructure, applications, and processes, identifying potential challenges and risks.

Develop a detailed migration plan, including data migration, configuration conversion, and testing procedures, with clear timelines and milestones.

Establish a dedicated migration team with expertise in both the legacy and new configuration management tools to facilitate the transition and address any issues that arise.

Implement a phased migration approach, starting with non-critical components and gradually expanding to more critical systems, closely monitoring the impact and addressing any issues before proceeding.

Question 5: You're using AWS Lambda to run serverless functions. You want to ensure that your functions can handle a sudden increase in invocations without experiencing performance issues. What configuration option would you adjust?

Which action should you take?

Choose only one option

Memory allocated to the Lambda function

Timeout duration for the Lambda function

Concurrency limit for the Lambda function

VPC configuration for the Lambda function

Question 6: You're working on a large project with multiple team members contributing to the configuration management repository. How do you ensure consistency and prevent conflicts while allowing for flexibility and experimentation?

Which action should you take?

Choose only one option

Establish clear branching and merging strategies, encouraging frequent integration and testing.

Implement code reviews and automated testing to catch errors and inconsistencies early in the development process.

Use feature flags or environment variables to enable or disable specific configuration changes on different environments.

Enforce strict coding standards and conventions for configuration management code to maintain consistency.