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Top DevOps Interview Questions – Most Asked

DevOps Interview Questions
Here are top 20 objective type sample DevOps Interview Questions and their answers are given just below to them. These sample questions are framed by experts from Intellipaat who trains for DevOps Training to give you an idea of type of questions which may be asked in interview. We have taken full care to give correct answers for all the questions. Do comment your thoughts Happy Job Hunting!

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Top Answers to DevOps Interview Questions

1. What is DevOps?
Characteristics DevOps
Basic premise Agile, lean, collaboration of IT development and operations which is more of a cultural shift
Related to Agile methodology
Priorities Resource management, communication and teamwork
Benefits Speed, functionality, stability and innovation
2. List the essential tools used in Devops.
  • Git
  • Jenkins
  • Selenium
  • Puppet
  • Chef
  • Ansible
  • Nagios
  • Docker
  • Monit
  • ELK –Elasticsearch, Logstash, Kibana
  • Collectd/Collect
  • Git(GitHub)

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3. What are the core operations of DevOps in terms of development and Infrastructure?

The core operations of DevOps

  • Application development
  • Code developing
  • Code coverage
  • Unit testing
  • Packaging
  • Deployment With infrastructure
  • Provisioning
  • Configuration
  • Orchestration
  • Deployment
4. What are the advantages of DevOps with respect to Technical and Business perspective?

Technical benefits:

  • Software delivery is continuous.
  • Reduces Complexity in problems.
  • Faster approach to resolve problems
  • Manpower is reduced.

Business benefits:

  • High rate of delivering its features
  • Stable operating environments
  • More time gained to Add values.
  • Enabling faster feature time to market

Learn more about DevOps advantages from this informative blog.

5. The scope for SSH?
  • SSH is a Secure Shell which provides users with a secure, encrypted mechanism to log into systems and transfer files.
  • To log out a remote machine and work on command line.
  • To secure encrypted communications between two hosts over an insecure network.
6. Which are the areas where DevOps are implemented?
  • Production Development
  • Creation of the production feedback and its development
  • IT Operations development
7. List the agile methodology of DevOps.
  • DevOps is a process
  • Agile is same as DevOps.
  • Separate group for are framed.
  • It is problem solving.
  • Developers managing production
  • DevOps is development-driven release management
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8. List the major difference between the Agile and DevOps.

Agile:

  1. Agile is about software development

Devops:

  1. DevOps is about software deployment and management.
  2. DevOps does not replace Agile or Lean. It does this by killing waste, removing handovers, and streamlining deployments to allow faster and more continuous deployments to PRODUCTION.
9. Name the popular scripting language of DevOps.

Python

10. How DevOps is helpful to developers?
  • To fix the bug and implement new features quickly.
  • It provides the clarity of communication among team members.
11. What are Vagrant and its uses.
  • Vagrant used virtual box as the hypervisor for virtual environments and in current scenario it is also supporting the KVM. Kernel-based Virtual Machine
  • Vagrant is a tool that can create and manage environments for testing and developing software.

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12. What are the major difference between the Linux and Unix operating systems?

Unix:

  • It belongs to the family of multitasking, multiuser operating systems.
  • These are mostly used in internet servers and workstations.
  • It is originally derived from AT&T Unix, developed starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
  • Both the operating systems are open source but UNIX is relatively similar one as compared to LINUX.

Linux:

  • Linux has probably been home to every programming language known to humankind.
  • These are used for personal computers.
  • The LINUX is based on the kernel of UNIX operating system.
13. How we can make sure new service is ready for the products launched?
  • Backup System
  • Recovery plans
  • Load Balancing
  • Monitoring
  • Centralized logging
14. What are the benefits of the NoSQL?
  • Non-relational and schema-less data model
  • Low latency and high performance
  • Highly scalable
15. What are adoptions of DevOps in industry?
  1. Use of agile and other development processes and methods .
  2. Demand for an increased rate of production releases from application and business.
  3. Wide availability of virtual and cloud infrastructure from both internal and external providers;
  4. Increased usage of data center ,automation and configuration management tools;
  5. Increased focus on test automation and continuous integration methods;
  6. Best practices on critical issues.
16. What are the advantages of NoSQL database over RDBMS?

The advantages are:

  1. There is very less scope of ETL
  2. Support is given for unstructured text
  3. Changes are handle over period of time
  4. Main objectives are functionality.
  5. It has the ability to scale horizontally
  6. Multiple data structures are given support.
  7. Vendors can be chosen.

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17. The top 10 skills the person should be having for the DevOp’s position?
  • Excellent in System Admin
  • Virtualization Experience
  • Good Technical Skills
  • Excellent Scripting
  • Good Developing skills
  • Chef in Automation Tool Experience
  • People Management
  • Customer Service
  • Real time Cloud operations
  • Who care about someone
18. Explain how the implementation of “Infrastructure as code” is processed or executed in terms of AWS.

In AWS,

  • The code will be in the simple JSON format.
  • This JSON code is well organized into files called templates.
  • This templates are deployed on AWS and then further managed as stacks
  • Cloud Formation service will help in doing the Creating, deleting, updating, etc. operation in the stack.
19. What measures we have taken to handle revision (version) control?

To handle revision control, post your code on SourceForge or GitHub so everyone can view it and ask the viewers to give suggestions for the better improvement of it.

20. What are the types of HTTP requests?

The types of Http requests are

  • GET
  • HEAD
  • PUT
  • POST
  • PATCH
  • DELETE
  • TRACE
  • CONNECT
  • OPTIONS

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