Top 6 interview questions for a DevOps engineer ?

What is the require for DevOps?

< >deployment frequencyLower destroy rate of new releasesless time taken between fixing issuesFaster mean time to recovery in the event of new release crashingwhat is difference in DevOps  from Agile / SDLC?Which are the top DevOps tools? Which tools have you worked on?                 Git : For  Version Control System toolJenkins : For Continuous Integration toolSelenium : For Continuous Testing toolPuppet, Chef, Ansible : This Is Configuration Management and Deployment toolsNagios : This Is Continuous Monitoring toolDocker : This Is Containerization tool 

< >How these tools work together in Industry?Developers develop the code and that source code is managed by Version Control System tools like Git etc.Developers send this code to the Git repository and any changes made in the code is committed to this Repository.Jenkins forward this code from the repository using the Git plugin and build it using tools like Ant or Maven.Once the code is tested, Jenkins send it for deployment on the production server (even production server is provisioned & maintained by tools like puppet). 

< >What is Version control system? 

< >regress files back to a previous state.Revert the entire project back to a previous state.Every time Compare changes over time.See who last customized something that might be causing a problem.Who introduced an issue and when they fix it. 

< >What are the benefits of using version control? 

< >With Version Control System (VCS), all the team members are allowed to work freely on any file at any time.  

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