Cognizant Devops Engineer Interview Questions and Answers

Q1. What is Java . Why did you join in this company. Which skills do you have
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Q2. What is inheritance
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Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows a class to reuse code from another class

• Enables the creation of a hierarchy of classes

• Derived class inherits properties and behaviors from a base class

• Promotes code reusability and reduces redundancy
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Q3. What collection
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Q4. What is array. Types of array.collection
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An array is a data structure that stores a collection of elements, typically of the same data type.
• Arrays can be of fixed size or dynamic size.

• Types of arrays include one-dimensional, multi-dimensional, and jagged arrays.

• Examples: ['apple', 'banana', 'orange']
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Q1. Basic Linux command such as cut and find real time usage.
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The 'cut' and 'find' commands in Linux are essential for text processing and file searching, respectively.
• The 'cut' command extracts sections from each line of input. Example: 'cut -d: -f1 /etc/passwd' retrieves usernames.

• The 'find' command searches for files and directories in a directory hierarchy. Example: 'find /home -name '*.txt'' finds all text files in /home.

• Use 'cut' to format output from other commands. Exampl...read more
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Q2. Experience on ansible playbook
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I have extensive experience creating and managing ansible playbooks for automation.
• Created ansible playbooks to automate deployment processes

• Utilized ansible roles and modules to streamline configuration management

• Implemented ansible playbooks for infrastructure as code practices

• Troubleshooted and optimized ansible playbooks for efficiency

• Integrated ansible playbooks with CI/CD pipelines for continuous delivery
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It is 1 hour aptitude question with probability, time and date, series ,

Q1. Jenkins , Maven
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Q1. Cicd implementation for java app using Jenkins
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Implementing CI/CD for a Java app using Jenkins
• Set up Jenkins server and install necessary plugins for Java projects

• Create a Jenkins pipeline script to build, test, and deploy the Java app

• Integrate version control system (e.g. Git) with Jenkins for automated builds

• Use Maven or Gradle for dependency management and build automation

• Implement automated testing using tools like JUnit or Selenium

• Configure Jenkins to trigger ...read more
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Q2. Docker and Kubernetes
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Q1. What are state full and stateless applications?What is the difference between them?
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Stateful applications store data while stateless applications do not.
• Stateful applications maintain a record of previous interactions and require persistent storage.

• Stateless applications do not store data and can be easily scaled horizontally.

• Stateful applications are more complex and require more resources than stateless applications.

• Examples of stateful applications include databases and messaging systems, while sta...read more
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Q1. Discussion on expectations and experience
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