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#1. 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.
#2. 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.
#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. 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.
#5. What is the purpose of using Docker in a DevOps environment?
Explanation: Docker is used to containerize applications, ensuring consistency across different environments.
#6. 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.
#7. Which Terraform command is used to apply changes to infrastructure?
Explanation: terraform apply applies the planned changes to the infrastructure.
#8. Which of the following is a primary goal of DevOps?
Explanation: DevOps aims to speed up software development by fostering collaboration between development and operations teams and automating processes.
#9. What is the primary purpose of a Kubernetes Ingress?
Explanation: Ingress manages HTTP and HTTPS traffic routing to Kubernetes services.
#10. Scenario: Your application needs to be deployed across multiple environments (development, staging, production) with consistent configurations. What should you use?
Explanation: IaC allows you to manage and provision infrastructure through code, ensuring consistency across different environments.
#11. What type of Kubernetes service is used to expose an application to the internet?
Explanation: A LoadBalancer service routes external traffic to the application.
#12. You want to run a container in the background and expose a port. Which command should you use?
Explanation: The -d flag runs the container in detached mode, and -p maps ports.
#13. 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.
#14. Which practice involves automated testing, building, and deployment of code?
Explanation: Continuous Deployment involves the automatic deployment of code to production environments following successful automated tests.
#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.