Preview Questions DevOps | Role Specific Skill

Question 1: You are building a Docker image for your application, but the image size is very large, impacting build and deployment times. How do you optimize the image size without sacrificing functionality?

Which action should you take?

Choose only one option

Utilize a smaller base image, such as Alpine Linux, to reduce the overall image size.

Leverage multi-stage builds to separate build-time dependencies from runtime dependencies, resulting in a smaller final image.

Minimize the number of layers in the Docker image by combining commands and optimizing the Dockerfile instructions.

Analyze the contents of the image using tools like dive to identify and remove any unnecessary files or dependencies.

Question 2: 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 3: You are responsible for securing your organization's Kubernetes clusters. What best practices and security measures do you implement to protect your containerized workloads and the underlying infrastructure?

Which action should you take?

Choose only one option

Enforce network policies and micro-segmentation to restrict communication between pods and namespaces based on security requirements.

Utilize pod security policies (PSPs) or pod security admission controllers to control the security context and capabilities of containers running in the cluster.

Implement role-based access control (RBAC) to restrict access to Kubernetes resources based on user roles and responsibilities.

Regularly audit and monitor Kubernetes configurations, logs, and events to detect and respond to potential security incidents or misconfigurations.

Question 4: You're using Azure Blob Storage to store large amounts of unstructured data. You need to control access to this data based on user roles and permissions. What service would you use to manage access?

Which action should you take?

Choose only one option

Azure Active Directory

Azure Role-Based Access Control (RBAC)

Azure Key Vault

Azure Security Center

Question 5: You are deploying a containerized application to a Kubernetes cluster, but it's failing to start due to a "CrashLoopBackOff" error. How do you diagnose and resolve this issue?

Which action should you take?

Choose only one option

Check the container logs to identify the specific error message or exception that is causing the container to crash.

Examine the Kubernetes events related to the pod to understand the sequence of events leading to the CrashLoopBackOff state.

Verify the container's health checks and liveness probes to ensure they are configured correctly and reflect the application's health.

Roll back the deployment to the previous working version of the application and investigate the changes that might have caused the issue.

Question 6: You are investigating a potential security incident where an attacker gained unauthorized access to your production environment. How do you conduct a thorough forensic investigation to identify the attack vector, assess the impact, and prevent future occurrences?

Which action should you take?

Choose only one option

Isolate and preserve the affected systems and data to prevent further tampering or data loss.

Analyze system logs, network traffic, and security events to identify the attacker's actions and techniques.

Conduct interviews with relevant personnel to gather information and understand the timeline of events.

Implement additional security measures and controls to address the identified vulnerabilities and prevent future attacks.