47Billion Devops Engineer Interview Questions and Answers

Q1. What is devops?
Ans. 
DevOps is a software development methodology that combines software development (Dev) with IT operations (Ops) to improve collaboration and efficiency.
• DevOps focuses on automating and streamlining the software development process.

• It emphasizes communication and collaboration between development and operations teams.

• DevOps aims to shorten the development lifecycle and provide continuous delivery of high-quality software...read more
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Q2. How to handle devops operations?
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Devops operations involve managing the development and deployment of software applications.
• Automate repetitive tasks to improve efficiency

• Use version control systems like Git for tracking changes

• Implement continuous integration and continuous deployment pipelines

• Monitor system performance and troubleshoot issues proactively
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Q1. What is the difference between devops and sre?
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DevOps focuses on collaboration between development and operations teams, while SRE focuses on reliability and scalability of systems.
• DevOps is a cultural and organizational practice that emphasizes collaboration and communication between development and operations teams.

• SRE (Site Reliability Engineering) is a specific role within an organization that focuses on ensuring the reliability, scalability, and performance of...read more
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Q2. How is the devops important?
Ans. 
DevOps is important for streamlining software development and deployment processes.
• DevOps helps in automating manual tasks, increasing efficiency and reducing errors.

• It promotes collaboration between development and operations teams, leading to faster delivery of software.

• DevOps enables continuous integration and continuous delivery (CI/CD) pipelines, ensuring rapid and reliable software releases.

• It improves overall so...read more
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Q1. Basic Python question
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Q2. VPC, subnet, SGs and then Lambda function
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Q1. Explain CI/CD pipeline .
Ans. 
CI/CD pipeline is a set of automated processes that allow developers to continuously integrate code changes and deploy them to production.
• Continuous Integration (CI) involves automatically building and testing code changes as they are committed to a shared repository.

• Continuous Deployment (CD) involves automatically deploying code changes to production environments after passing automated tests.

• CI/CD pipelines typicall...read more
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Q2. Explain daemonset in kubernetes.
Ans. 
DaemonSet ensures that all or some nodes run a copy of a Pod
• DaemonSet is a Kubernetes resource that ensures a copy of a Pod is running on all or some nodes in the cluster

• It is useful for running a single instance of a Pod on every node, such as log collection or monitoring agents

• DaemonSet automatically adds or removes Pods as nodes are added or removed from the cluster
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Q1. Explain the networking services in AWS.
Ans. 
AWS provides a variety of networking services to help users manage their network infrastructure.
• Virtual Private Cloud (VPC) allows users to create isolated networks within the AWS cloud

• Elastic Load Balancing distributes incoming traffic across multiple instances to ensure high availability

• Route 53 is a scalable domain name system (DNS) web service

• Direct Connect allows users to establish a dedicated network connection b...read more
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Q2. What is terraform module?
Ans. 
Terraform module is a reusable, configurable, and self-contained collection of Terraform resources.
• Terraform modules help organize and reuse code for infrastructure components

• Modules can be shared and reused across different projects

• Modules can have input variables to customize their behavior

• Modules can output values that can be used by other parts of the infrastructure code
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Q1. Why GitOps tool ?
Ans. 
GitOps tools help automate infrastructure management, version control, and deployment processes.
• Enables infrastructure as code practices

• Facilitates version control for infrastructure configurations

• Automates deployment processes

• Promotes collaboration and visibility among team members

• Examples: Argo CD, Flux, Jenkins X
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Q2. What is AWS secret manager?
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AWS Secret Manager is a service that helps you protect access to your applications, services, and IT resources.
• It allows you to securely store, manage, and retrieve sensitive credentials and configuration data.

• You can rotate, manage, and retrieve secrets throughout their lifecycle.

• Integrates with AWS services like Lambda, EC2, RDS, and more for secure access to secrets.

• Helps you meet security and compliance requirement...read more
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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. Questions on Docker
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Q1. What are roles in ansible
Ans. 
Roles in Ansible are a way to group tasks, handlers, variables, and other related files together for easier management and reuse.
• Roles help in organizing and structuring Ansible playbooks

• They promote reusability and modularity

• Roles can be shared and reused across different playbooks

• Each role typically consists of directories like tasks, handlers, templates, vars, etc.

• Roles can be installed using Ansible Galaxy
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Q2. How do you give admin permissions to run your playbook
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To give admin permissions to run a playbook, you can use sudo or grant specific permissions in the sudoers file.
• Grant sudo access to the user running the playbook

• Add the user to the sudoers file with specific permissions

• Use ansible_become to run tasks with elevated privileges
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Q3. How can you add a plugin in Jenkins manually
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To add a plugin in Jenkins manually, you can download the plugin file and upload it through the Jenkins web interface.
• Download the desired plugin file from the Jenkins website or other sources.

• Navigate to the Jenkins dashboard and click on 'Manage Jenkins'.

• Select 'Manage Plugins' and go to the 'Advanced' tab.

• Choose the 'Upload Plugin' option and select the downloaded plugin file.

• Click 'Upload' and restart Jenkins to ap
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Aptitude was mix of questions from logical reasoning, english grammar to simple numerical problems.

Q1. Questions were regarding projects done.
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Q1. Jenkins pipeline, docker file
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Q2. Bash command, Linux command
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Q3. Java program for reverse string
Ans. 
Java program to reverse a string using StringBuilder
• Create a StringBuilder object with the input string

• Use the reverse() method of StringBuilder to reverse the string

• Convert the reversed StringBuilder object back to a string using toString()
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Q4. Explain product release setup
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Product release setup involves planning, coordinating, and executing the release of a software product to customers.
• Create a release plan outlining the scope, timeline, and resources needed for the release

• Coordinate with development, QA, and operations teams to ensure all necessary tasks are completed

• Use version control systems to manage code changes and track release versions

• Automate build, test, and deployment proces...read more
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