IBM – DevOps Interview Questions

Here is the list of DevOps Interview Questions which are recently asked in IBM company. These questions are included for both Freshers and Experienced professionals.

1. What is Docker Container?

Docker is an open source containerization platform. It enables developers to package the applications into containers standardized executable components combining application source code with the operating system libraries and dependencies required to run that code in any environment.

2. Can we consider DevOps as Agile methodology?

DevOps is an extension of agile built around the practices that are not in agile's focus. When used together, both practices improve the software development and lead to better products.

3. What are the advantages of using Git?

One of the biggest advantages of Git is its branching capabilities. Unlike centralized version control systems, Git branches are cheap and easy to merge. This facilitates the feature branch workflow popular with many Git users. Feature branches provide an isolated environment for every change to the your codebase.

4. What is kernel?

The kernel performs its tasks, such as running processes, managing hardware devices such as the hard disk, and handling interrupts, in this protected kernel space. In contrast, application programs like browsers, word processors, or audio or video players use a separate area of memory, user space.

5. What is difference between grep -i and grep -v?

The grep command is used to find the specified string in the file. The execution effect of egrep is similar to "grep-E", the syntax and parameters used can refer to the grep command,The difference with grep is the method of interpreting strings.

6. How can you define particular space to the file

The df command gets file system space statistics from that the statfs system call. statistics from the virtual file system specific file system helper.

7. What is Scrum?

Scrum is a lightweight framework that the helps people, teams and organizations generate value through adaptive solutions for complex problems.

8. Explain what DevOps is?

DevOps is the combination of cultural philosophies, practices, and tools that increases an organization's ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than the organizations using traditional software development and infrastructure management processes.

9. Mention what the key aspects or principle behind DevOps are?

To fuel a DevOps culture, we have to build robust tooling, also. That means investing up front in the five key areas: abstraction, composability, automation, orchestration, and idempotency. Together, these concepts allow sharing work at every level of the pipeline.

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10. What are the core operations of DevOps with application development and with infrastructure?

The core operations of DevOps are application development, code developing, code coverage, unit testing, packaging, deployment with the infrastructure, provisioning, configuration, orchestration, and deployment.

11. Explain how “Infrastructure code” is processed or executed in AWS?

The code for infrastructure will be in simple JSON format. This JSON code will be organized into files called templates. This templates can be deployed on AWS devops and then managed as stacks.

12. Explain which scripting language is most important for a DevOps engineer?

  • Python. Most well-known language for programming and the first one that should be learnt, if someone wishes to become a DevOps professional.
  • JavaScript. While Python is more flexible, JavaScript adds significant value to the DevOps Environment.
  • Ruby.
  • Perl.

13. Explain how DevOps is helpful to developers?

DevOps is helpful to developers are:
  • Python. Most well-known language for programming and the first one that should be learnt, if someone wishes to become a DevOps professional.
  • JavaScript. While Python is more flexible, JavaScript adds significant value to the DevOps Environment.
  • Ruby.
  • Perl.

14. List out some popular tools for DevOps?

The popular tools for Devops are:
  • Git. Code, Build.
  • Gradle. Build.
  • Selenium. Test.
  • Jenkins. Build, Test, Deploy.
  • Puppet. Deploy, Operate.
  • Chef. Deploy, Operate.
  • Docker. Build, Deploy, Operate.
  • Kubernetes. Build, Deploy, Operate.

15. Mention at what instance have you used the SSH?

SSH or Secure Shell is a network communication the protocol that enables two computers to communicate and share data.

16. Explain how you would handle revision (version) control?

In the software development process, revision control, also known as version control or source control, is the management of the changes made over time. These changes can be to source code, project assets, or any other information that goes into the finished product.

17. What are the types of Http requests?

The types of Http requests are:
  • Sent when URL is submitted in the browser location bar or a user clicks a link.
  • Send data in the URL and query string.
  • Reloadable.
  • Can bookmark.
  • Used for read-only operations. View, search, sort, or filter data. Data does not change.

18. What are the key components of DevOps?

The Most Critical key Components of DevOps are:
  • An Agile Framework.
  • Automated Testing.
  • Configuration Management.
  • Regular Integration.
  • Infrastructure as Code.

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