Preview Questions DevOps | Role Specific Skill

Question 1: You are troubleshooting a production issue where a containerized application is experiencing high memory usage and frequent OutOfMemory (OOM) errors. How do you diagnose and resolve this problem?

Which action should you take?

Choose only one option

Increase the memory limits allocated to the container to provide more resources and prevent OOM errors.

Profile the application's memory usage inside the container to identify memory leaks or inefficient memory management practices.

Optimize the application code to reduce memory footprint and improve memory utilization.

Implement resource monitoring and alerting to proactively detect and address potential memory issues before they cause OOM errors.

Question 2: You are tasked with containerizing a legacy application that has multiple dependencies and complex configuration files. What is the first step you would take to ensure a smooth containerization process?

Which action should you take?

Choose only one option

Package all dependencies and configuration files within the container image to ensure portability.

Refactor the application to minimize dependencies and simplify configuration management within the container.

Utilize a base image that already includes the necessary dependencies and build the application on top of it.

Break down the monolithic application into smaller, loosely coupled microservices that can be containerized independently.

Question 3: You are leading a team that is adopting a containerized microservices architecture. How do you address the unique security challenges posed by this distributed and dynamic environment?

Which action should you take?

Choose only one option

Implement network segmentation and micro-segmentation to isolate containers and restrict communication between them based on security policies.

Utilize container runtime security tools to monitor and protect containers from potential threats and vulnerabilities at the operating system level.

Leverage service mesh technologies to manage service-to-service communication, enforce authentication and authorization policies, and encrypt traffic between microservices.

Scan container images for vulnerabilities and enforce strict image promotion policies to prevent the deployment of insecure or non-compliant images.

Question 4: You're deploying a new application to AWS using Terraform, but the deployment is failing due to insufficient IAM permissions. How do you resolve this?

Which action should you take?

Choose only one option

Modify the Terraform configuration to grant the necessary IAM permissions to the user or role executing the deployment.

Manually create the required IAM policies and attach them to the user or role.

Use the AWS CLI or console to temporarily elevate the permissions of the user or role to troubleshoot the issue.

Consult the Terraform documentation and online forums for guidance on managing IAM permissions in Terraform.

Question 5: You are tasked with scaling your containerized application to handle increased traffic during peak hours. How do you leverage container orchestration capabilities to achieve this?

Which action should you take?

Choose only one option

Manually scale up the number of replicas for your application's deployment in the Kubernetes cluster.

Configure Horizontal Pod Autoscaler (HPA) to automatically scale the number of replicas based on CPU or memory utilization.

Utilize a service mesh like Istio to implement traffic splitting and gradually roll out new versions of your application to handle increased load.

Implement a combination of manual scaling, HPA, and service mesh capabilities to achieve optimal scalability and flexibility.

Question 6: You are leading a team that is adopting a DevSecOps approach to integrate security practices into the software development lifecycle for containerized applications. How do you ensure that security is embedded throughout the development and deployment process?

Which action should you take?

Choose only one option

Integrate security scanning and vulnerability assessment tools into your CI/CD pipeline to identify and address security issues early in the development process.

Implement security as code practices, defining and enforcing security policies and configurations through IaC templates and automation.

Conduct regular security training and awareness programs for developers and operations teams to promote a security-first mindset.

Foster a culture of collaboration and shared responsibility for security between development, operations, and security teams.