Paramaah IT Services Devops Engineer Interview Questions and Answers

Q1. DevOps Tool and Technologies
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Q1. Regarding AWS networking, Jenkins, Terraform, Linux
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Q2. Write dockerfile to run python script.
Ans. 
Dockerfile to run a Python script
• Use a base Python image as the starting point

• Copy the Python script into the container

• Specify the command to run the Python script
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Q3. Run vs CMD vs ENTRYPOINT.
Ans. 
Run vs CMD vs ENTRYPOINT are Docker instructions used to specify commands to be executed when a container is launched.
• RUN is used to execute commands during the build of the image

• CMD is used to provide default arguments for the entrypoint or to specify the command to run when the container starts

• ENTRYPOINT is used to specify the executable that will run when the container starts, and CMD can be used to provide addition...read more
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Q4. How to upgrade kubernetes cluster version
Ans. 
To upgrade a Kubernetes cluster version, you can use kubeadm tool or manually update each component.
• Use kubeadm tool to upgrade the cluster version

• Check the current version of the cluster using kubectl

• Upgrade the control plane components first, followed by worker nodes

• Ensure compatibility of applications with the new version before upgrading

• Backup important data and configurations before upgrading
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Q5. Terraform file to provision ec2 instance and import existing instance with their configuration
Ans. 
Use Terraform to provision ec2 instance and import existing instance with their configuration
• Create a Terraform configuration file with necessary resources like aws_instance

• Use the import command to import existing instance with their configuration

• Update the Terraform configuration file with the imported instance details

• Apply the Terraform configuration to provision the ec2 instance
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Q1. Kubernetes architecture
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Q2. CICD pipeline in jenkins
Ans. 
CICD pipeline in Jenkins automates the process of building, testing, and deploying code.
• Jenkins is a popular automation server used for CICD pipelines

• CICD pipeline in Jenkins typically involves stages like build, test, deploy

• Jenkins plugins can be used to integrate with various tools for automation

• Pipeline scripts in Jenkins can be written in Groovy language
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Round duration - 30 minutes
Round difficulty - Medium

Q1. How do you approach solving and troubleshooting infrastructure issues?
Ans. 
I approach solving and troubleshooting infrastructure issues by following a systematic approach and utilizing various tools and techniques.
• Identify the root cause of the issue by analyzing logs, monitoring metrics, and conducting tests.

• Utilize automation tools like Ansible, Puppet, or Chef to quickly deploy and configure infrastructure.

• Collaborate with team members and stakeholders to gather information and brainstorm ...read more
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Q2. 
Guess The Hidden Number Problem Statement
You are given an integer N and there is a hidden number within the range [0, N] that you must guess. You have access to a function higherLower(k) which helps in g...read more
Ans. 
The task is to guess a hidden number within a given range using a function that provides hints about the number's relation to a given input.
• Use the higherLower(k) function to determine if the hidden number is smaller, equal to, or greater than the input k.

• Implement a binary search algorithm to efficiently guess the hidden number within the given range.

• Iteratively narrow down the range based on the hints provided by the...read more
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Round duration - 60 minutes
Round difficulty - Hard

You should be a good math solver

Mostly question were based on data structure and algorithm and Kadane's Algorithm . Leet code is the best platform for cracking any coding interview . The logic were similar for every question from the leet code only they changes the name

Q1. 1. Question based on your prefer programming language 2.Question on your Coding round , how you solved this program , what its time complexity 3.Question based on DSA.
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Q2. What is tuple? What is recursion? Time Complexity of a coding question which comes on your coding round There were some more practical question there based on java .
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Q1. Be Confident , talk properly ask him question in the last
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Basic quant is asked which is easy to crack

Q1. What is vault & how it is integrated with your AWS
Ans. 
Vault is a tool for managing secrets and protecting sensitive data.
• Vault securely stores and manages sensitive information such as API keys, passwords, and certificates.

• It provides a centralized place for managing access control and encryption of data.

• Vault can be integrated with AWS to securely store and retrieve AWS credentials and other sensitive information.

• Integration with AWS allows for automated provisioning and...read more
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Q1. What is your Strength?
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