DevOps is one of the hottest terms in technology, but it is much more than that. It is a partnership between the development and operations teams to produce a product more quickly and efficiently. There has been a significant surge in vacancies for DevOps engineers recently. Multinational enterprises such as Google, Facebook, and Amazon regularly have many openings for DevOps Engineer Experts. However, the employment market is highly competitive, and the questions asked in a DevOps engineer interview might include a wide range of complex topics. Here are some of the most frequent DevOps interview questions and answers to guide you as you prepare to apply for DevOps positions in the business.
1. What is DevOps?
It is a phrase that is just starting to be used in the IT industry to describe a method that stresses communication and collaboration between the deployment (operations) team and software developers. It focuses on accelerating software product delivery and reducing release failure rates.
2. What differentiates DevOps from agile methodology?
The concept of DevOps enables collaboration between the development and operations teams. As a result, the software is continuously developed, tested, integrated, deployed, and monitored.
Agile is a method of developing software that emphasizes user feedback and iterative, incremental, small, and quick software releases. It resolves disparities and disputes between customers and developers.
3. What are the most popular DevOps tools?
The most often used DevOps tools are:
4. What differentiates continuous deployment from continuous delivery?
|Continuous delivery||Continuous deployment|
|Enables the secure deployment of code to production||Each update that meets the automated tests is automatically deployed to production.|
|Ensures that business applications and services operate as planned.||Improves the speed and robustness of software development.|
|Delivers each modification to a setting resembling production through meticulous automated testing||There is no explicit consent from a developer, and a developed monitoring culture is required.|
5. What function does configuration management play in DevOps?
6. What are the various phases of the DevOps methodology?
Here are the phases of the DevOps lifecycle:
7. What is AWS’s role in DevOps?
In DevOps, AWS plays the following roles:
8. List the top three DevOps KPIs?
The following are the three important KPIs:
9. What exactly is Automation Testing?
Automation is the practice of automating a manual method in order to test an application or system. Automation testing comprises using independent testing tools to create test scripts that can be performed repeatedly without requiring human intervention.
10. What are the benefits of using Git?
Following are the benefits of using Git:
11. How do merge conflicts be handled in Git?
Three steps are taken to resolve merge issues in Git:
12. What exactly is a Blue/Green Deployment Pattern?
This continuous deployment technique is frequently used to cut down on downtime. Transferring traffic from one version to another takes place here. Designers must swap out the outdated code with the new code version to include the new code version.
The old version is in a blue environment, while the new one is in a green environment. Designers require a new version from the old one after making changes to the old one to run the updated version of the instance.
13. How may testing be automated in the DevOps lifecycle?
Developers must submit all source code updates to a common DevOps repository. When an update is made to the code, tools similar to Jenkins’ Continuous Integration will pull it from this central repository and distribute it for ongoing testing, which is carried out by Selenium-based technologies.
14. Describe how to copy files and create backups with Jenkins.
To take a backup, simply back up the JENKINS HOME directory on a regular basis. This section includes all of the build job configurations, slave node configurations, and build history. Simply duplicate this directory to build a backup of the current Jenkins configuration. Users can also duplicate or rename a job directory to clone or replicate a job.
15. Mention a few of Jenkins’ useful plugins.
Following are some of the useful Jenkins plugins:
16. Mention some of the primary advantages of DevOps.
Following are some of the primary advantages of DevOps:
17. What is the difference between git fetch and git pull?
|Git fetch||Git pull|
|Git fetch transfers new data to the local repository from a remote repository.||The working directory is updated using DevOps to represent the most recent server-side changes.|
|Git fetch merely transfers data to a local repository; it does not integrate that data with the working repository.||The data is merged into the working repository using Git pull, which is used to obtain the data locally.|
|Command – git fetch origin||Command – git pull origin|
18. What does Continuous Integration mean?
It is a development practice in which developers must integrate code into a shared repository many times each day. An automatic build then validates each check-in, allowing teams to spot issues quickly.
19. What types of testing does Selenium support?
Selenium supports two types of testing:
20. What exactly is a Puppet?
Puppet is a Configuration Management tool for automating administration activities.
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