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DevOps is a career in tech that has a lot of opportunities for skilled professionals. The search trends for the term ‘DevOps’ grow to 34% from 2017 to 2023.
The rise in demand for DevOps jobs is a corollary to the increasing DevOps adoption rate by companies. While 42% of the organizations are applying DevOps at the project or multiple project level, 23% of the organizations are implementing DevOps at the enterprise level.
If a career in DevOps excites you, then you have to gain certification for that after the completion of DevOps Certification Training. We have designed 30 DevOps Interview Questions that will help you become confident. This list has a mix of beginner, intermediate, and advanced questions to gauge your knowledge.
Here we go!
1. What is DevOps?
DevOps is a combination of technical practices, tools, & cultural philosophies that help in the automation and assimilation of software development and IT services.
2. List the technical and business benefits of DevOps
The technical and business benefits of DevOps are as follows- Technical Benefits
Faster detection and rectification of errors
Continuous delivery of software
Less complicated problems to handle
Business Benefits
High-stability functioning environments
Quick delivery of features
Renewed communication and collaboration among teams
3. How is DevOps different from Agile?
DevOps
Agile
DevOps is a combination of technical practices, tools, and cultural philosophies that help in the automation and assimilation of software development and IT services.
Agile is a time-bound agile project management methodology that follows an iterative approach that builds software in increments from the start till the completion of the project. It breaks down the larger project into phases and then builds the requirements in timeboxed iterations which typically last 2-4 weeks.
DevOps helps in managing end-to-end engineering concepts
Agile helps in managing large complicated projects
Concentrates on regular testing and delivery
Concentrates on frequent changes
The fundamental goal is collaboration so no rigid framework
Helps in data replication and identifying redundancy
It is easily available
It endorses collaboration
Useful for numerous projects
Makes use of only one Git directory per repository
Assists disk utilization
Optimum work performance
13. Mention the anti-patterns in DevOps
A pattern followed by organizations owing to herd mentality just because it is in vogue without any rationale is called Anti-pattern. Here are some of the antipatterns in DevOps-
DevOps isn’t a culture but a process
DevOps and Agile are the same
DevOps is distinct hence there should be a separate group
DevOps is the answer to every problem
DevOps is synonymous with developers
DevOps is based on a development driven approach
DevOps isn’t for development
We are different from other organizations and hence DevOps isn’t required
We lack the human capital to implement the DevOps culture
14. What does the term ‘Canary Release’ mean?
Canary Release is a type of pattern that minimizes the risk of introducing a new version of software into the production environment. It is done by releasing the software to a smaller group of audience for testing before the larger release.
15. What is the list of prerequisites required to implement DevOps?
Implementing DevOps requires the below-mentioned prerequisites-
Minimum one version of Version control
Linear communication between team members
Automated testing
Automated deployment
16. Explain the difference between Continuous Delivery and Continuous Deployment
Here is the difference between Continuous Delivery and Continuous Deployment- Continuous Delivery
Makes sure the code can safely be deployed to production
Sees to it that the business application and services functioning isn’t hampered
Guarantees every change to production similar environment with the help of automated testing
Continuous Deployment
All changes that pass the automated tests is moved to the production environment
The software development life cycle is swifter and the release is on time
No requirement of precise approval from a developer and requires round-the-clock monitoring
17. What is CBD?
CBD is short for Component-based Development is a special approach to product development. This method helps developers to search for current tested, all-round, and verified components code that saves the developers time from creating the code from the beginning.
18. What is Resilience Testing?
Resilience Testing is a software development process that tests an application to assess its behavior in an uncontrolled and unpredictable environment. It seems to it that the data and functionality is not lost in case of failure.
19. What is Version Control?
Version Control is the practice of tracking and managing changes to software code.
20. What are the principles of DevOps?
The principles of DevOps are-
Infrastructure as code
Continuous Deployment
Automation
Monitoring
Security
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Pair Programming is an agile technique where two programmers work together in one workplace. One is an observer while the other is a driver, both continuously track the project progress.
22. List the different types of HTTP requests
The different types of HTTP requests-
CONNECT
DELETE
GET
HEAD
OPTIONS
PATCH
POST
PUT
TRACE
23. What is a Build?
A Build is a method wherein a source code is assembled together to check if it works as a solo unit. During the build creation process, the source code will go through compilation, inspection, testing, and deployment.
24. What is the use of configuration management in DevOps?
Configuration Management is a systems engineering process for building consistency for a product’s traits throughout its life.
25. Why is Selenium used in DevOps?
Selenium testing is used in DevOps for continuous testing. It supports functional and regression testing.
26. Define Containers
A container image is a lightweight, independent, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, and settings.
27. What is the meaning of two-factor authentication?
Two-factor authentication is a security method where the user provides two ways of identification from separate categories.
28. What is a Vagrant?
A vagrant is a tool that can build and take care of virtualized environments for testing and developing software.
29. What are Post Mortem's meetings?
Post Mortem meetings are meetings that happen at the end of the project. It is conducted to discuss the failures, obstacles, and solutions to avoid them in the future. It is a critical assessment and review of a recently concluded project.
30. What is Forking Workflow?
Forking Workflow is an open-source project enabler that provides service-side repositories to support the same.
The Global DevOps Market size was estimated at USD 4,311.95 million in 2020, and was expected to reach USD 5,114.57 million in 2021. At a compound annual growth rate of 18.95% it is estimated to reach USD 12,215.54 million by 2026.
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