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#1. Scenario: Your team is frequently experiencing merge conflicts when integrating code. What should you implement to mitigate this issue?
Explanation: Continuous Integration helps to frequently merge code changes into a shared repository, reducing the chances of merge conflicts by identifying them early.
#2. You need to securely inject sensitive data into a Kubernetes pod. What should you use?
Explanation: Secrets are used to manage sensitive data securely in Kubernetes.
#3. Which tool is commonly used for continuous integration and continuous delivery (CI/CD)?
Explanation: Jenkins is a popular open-source automation server used to implement CI/CD pipelines.
#4. Which backend is commonly used to store Terraform state in AWS?
Explanation: S3 is the most common backend for storing Terraform state files.
#5. You need to deploy an application with a dependency on a specific version of a library. How do you ensure the container uses the correct version?
Explanation: The FROM directive determines the base image version, ensuring consistency.
#6. You encounter an issue where a container cannot connect to an external API. What should you check first?
Explanation: Networking issues, including DNS, often cause connectivity problems.
#7. Which Kubernetes object should you use to maintain a specified number of pod replicas running?
Explanation: ReplicaSet ensures a specified number of pod replicas. Deployments use ReplicaSets under the hood.
#8. Scenario: Your deployment process is manual and prone to errors, causing downtime. What should you implement to improve this process?
Explanation: Continuous Deployment automates the deployment process, reducing errors and downtime by ensuring that code changes are automatically deployed after passing tests.
#9. Which Docker command would you use to view all running and stopped containers on a host?
Explanation: The -a flag shows all containers, including stopped ones.
#10. How can you ensure that a pod is scheduled on a specific node?
Explanation: All listed methods can influence pod scheduling on specific nodes.
#11. Which command can you use to debug a running Kubernetes pod?
Explanation: Each command provides specific debugging information: logs for output, exec for shell access, and describe for configuration details.
#12. How can you reduce the size of a Docker image during the build process?
Explanation: Lightweight base images like alpine reduce the overall image size.
#13. What is the primary benefit of using version control systems like Git in DevOps?
Explanation: Version control systems help track and manage code changes, facilitating collaboration and improving code quality.
#14. What is the role of Kubernetes in a DevOps environment?
Explanation: Kubernetes is a container orchestration platform that automates the deployment, scaling, and management of containerized applications.
#15. Scenario: You want to ensure that your application can handle a sudden increase in traffic. What should you implement?
Explanation: Load testing helps simulate high traffic conditions and identifies potential bottlenecks, ensuring your application can handle increased loads.