Trademo Devops Engineer Interview Questions and Answers

Q1. About Linux and AWS
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Q2. Python coding Test
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Q1. Deep dive in AWS
Ans. 
AWS is a cloud computing platform by Amazon offering a wide range of services for storage, computing, networking, databases, and more.
• AWS provides a wide range of services including EC2 (Elastic Compute Cloud), S3 (Simple Storage Service), RDS (Relational Database Service), and more.

• AWS offers scalability, flexibility, and cost-effectiveness for businesses of all sizes.

• AWS has a global infrastructure with data centers ...read more
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Q2. Deep dive in Terraform and Python
Ans. 
Terraform is an infrastructure as code tool, while Python is a versatile programming language often used for automation in DevOps.
• Terraform is used for provisioning and managing infrastructure resources in a declarative way.

• Python is commonly used for scripting, automation, and building tools in the DevOps ecosystem.

• Terraform can be integrated with Python scripts to enhance automation capabilities.

• Both Terraform and Py...read more
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Q1. What is DaemonSet
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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 a cluster

• It is useful for running a single instance of a Pod on every node in a cluster

• DaemonSet is commonly used for monitoring, logging, and other system-level services

• Example: Running a logging agent on every node in a Kubernetes cluster
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Q2. What is deployment and difference between statefulset and deployment
Ans. 
Deployment is a way to manage and update applications in Kubernetes. StatefulSet is used for stateful applications with unique identities.
• Deployment is used for stateless applications, while StatefulSet is used for stateful applications.

• Deployment manages replica sets and ensures a desired state is maintained.

• StatefulSet maintains a unique identity for each pod, making it suitable for applications that require stable a...read more
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Q1. About you your experience and communication skills
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Q1. Depends upon team leader Ask basics as well as the issue they are facing during their work.
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Q2. Especially Linux file system How to mount additional disk Booting process Docker file structure
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Q1. Second technical round is depends upon the TL he can ask your experience and issues
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Q2. And can ask questions about cloud AWS and azure
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Q1. Salary discussion
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Q1. What is your Strength?
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Q1. Question on the skills that you have written in resume
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Q1. About experience in DevOps ?
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Q2. How do you approach to create a jenkins pipeline ?
Ans. 
To create a Jenkins pipeline, I follow these steps:
• Define the stages and steps of the pipeline

• Create a Jenkinsfile with the pipeline code

• Configure Jenkins to use the Jenkinsfile

• Test the pipeline and make necessary adjustments

• Integrate with version control for continuous integration

• Use plugins for additional functionality
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Q3. Syntax to print jenkins secrets ?
Ans. 
To print Jenkins secrets, use the syntax: printenv
• Use the 'printenv' command followed by the name of the secret to print its value

• Make sure to have the necessary permissions to access the secret

• Example: printenv MY_SECRET
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Q4. Creation of Docker image using Dockerfile ?
Ans. 
Dockerfile is a script that contains instructions to build a Docker image.
• Create a Dockerfile with instructions for building the image

• Use the 'docker build' command to build the image from the Dockerfile

• Example: FROM ubuntu:latest RUN apt-get update && apt-get install -y nginx

• Example: docker build -t myimage:latest .
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Q5. Difference between CMD and RUN in Dockerfile ?
Ans. 
CMD is used to specify the default command to be executed when a container is launched. RUN is used to execute commands during the build process.
• CMD is used to set the default command or parameters for the container

• RUN is used to execute commands during the build process to create the image

• CMD can be overridden by passing arguments to docker run command

• RUN executes the command and creates a new layer on top of the curr...read more
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Q6. Difference between Java and Nodejs ?
Ans. 
Java is a statically typed language while Nodejs is a runtime environment for executing JavaScript code.
• Java is compiled while Nodejs is interpreted

• Java is better for large-scale enterprise applications while Nodejs is better for real-time applications

• Java has a larger community and more libraries while Nodejs has a simpler and more lightweight architecture

• Java is used for Android app development while Nodejs is used f
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Q7. What is PaaS, IaaS & SaaS ?
Ans. 
PaaS, IaaS, and SaaS are cloud computing models that provide different levels of infrastructure and software services.
• PaaS (Platform as a Service) provides a platform for developers to build and deploy applications without worrying about infrastructure management.

• IaaS (Infrastructure as a Service) provides virtualized computing resources such as servers, storage, and networking.

• SaaS (Software as a Service) provides sof...read more
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Q8. What is DevOps ?
Ans. 
DevOps is a software development methodology that emphasizes collaboration and communication between development and operations teams.
• DevOps aims to streamline the software development process by breaking down silos between development and operations teams

• It involves using automation and continuous delivery to speed up the release cycle

• DevOps also emphasizes monitoring and feedback to ensure that software is reliable a...read more
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Q9. What is build in Java ?
Ans. 
Build in Java refers to the process of compiling source code into executable code.
• Build process involves compiling, testing, and packaging the code

• Java build tools like Maven and Gradle automate the build process

• Build artifacts can be JAR, WAR, or EAR files

• Build process can be customized using build scripts like Ant
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They will provide 10-20 aptitude questions and 10-20 coding outputs or flowchart related questions

They will give 5 coding questions, you can write in any programming language, irrespective of output they check how you are thinking and which logic you are using and efficiency of the code

In this round they will give bulk application programme no need to finish it but they will check your thought process and depth in oops concepts,

Q1. In this round they will ask technical questions, you have to explain use case with live examples
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Q2. What is static key word where can we use
Ans. 
The static keyword in Java is used to create variables and methods that belong to the class itself, rather than instances of the class.
• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables
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Q3. Why public static void main
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The public static void main method is the entry point for a Java program.
• public: Access modifier indicating that the method can be accessed from any other class.

• static: Indicates that the method belongs to the class itself, not an instance of the class.

• void: Indicates that the method does not return any value.

• main: The name of the method that serves as the entry point for the program.

• String[] args: An array of strings ...read more
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Q1. Will ask casual questions
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Q1. Introduction why you choose devops any programming language you have learned
Ans. 
I chose DevOps because it allows me to bridge the gap between development and operations, and I have learned multiple programming languages.
• DevOps enables faster and more efficient software delivery

• I have experience with programming languages such as Python, Java, and Bash

• DevOps practices such as continuous integration and deployment are essential for modern software development

• I enjoy working in a collaborative enviro...read more
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