DevOps: state of the art and best practices

1. What is the main purpose of Nexus Repository?

Artefact and dependency management Container orchestration Test automation Continuous deployment

Chapter Infrastructure as Code and GitOps

2. In GitOps, how do you roll back?

With a git revert in the deployment repository With kubectl edit in production By deleting the cluster By disabling Argo CD

3. Which file is used to specify tests and scripts in CircleCI?

.circleci/config.yml Dockerfile Jenkinsfile config.yml

4. Which Docker command is used to display the details of a container?

docker inspect docker show docker details docker info

5. Which Docker command is used to display running containers?

docker ps docker list docker show docker inspect

6. What is the purpose of Grafana?

Monitoring data visualisation Configuration management Container orchestration Test automation

7. Which Docker command is used to remove all unused images?

docker image prune docker rmi -a docker clean -a docker delete all

8. What is the main purpose of Terraform?

Deploying and managing infrastructure Container orchestration Configuration management Test automation

9. What is the role of Grafana in monitoring?

Performance metrics visualisation Container orchestration Configuration management Test automation

Chapter End-to-end CI/CD

10. What is a canary deployment?

Send a small share of traffic to the new version, then increase if metrics are good Deploy at night Test only in staging Stop then restart all servers

11. What is the role of Chef in DevOps?

Configuration management Container orchestration Continuous integration Test automation

12. What is the role of Elastic Stack (ELK) in DevOps?

Log analysis and visualisation Container orchestration Configuration management Continuous deployment

13. Which tool is mainly used for source code quality analysis?

SonarQube Git Jenkins Docker

14. Which command lists local Docker images?

docker images docker list images docker show images docker ls images

15. What is the main function of Chef?

Configuration management Container orchestration Continuous integration Test automation

16. Which command is used to create a new branch in Git?

git branch git create branch git new branch git checkout -b

17. What is the role of SonarQube in DevOps?

Code quality analysis Container orchestration Configuration management Test automation

18. What is the role of Helm in Kubernetes?

Kubernetes package management Container orchestration Configuration management Automated deployment

19. What is the main role of Zabbix in DevOps?

Performance monitoring and management Container orchestration Configuration management Test automation

20. What is the role of GitOps in a DevOps pipeline?

Automate deployments through Git repositories Orchestrate containers Manage configurations Monitor performance