Tata Communications Devops Engineer Interview Questions, Process, and Tips

Q1. About previous company projects and some intermediate level questions on AWS and DevOps
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Managerial skills

Understand aptitude aptly

Have basic knowledge on logics ,you can write code easily

Q1. Oops concepts and resume mentioned technologies
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Q2. Btech project to be explain
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My Btech project was on developing a web-based application for online shopping.
• Developed using PHP and MySQL

• Implemented features like user registration, product search, cart management, and payment gateway integration

• Used HTML, CSS, and JavaScript for frontend development

• Conducted testing and debugging to ensure smooth functioning

• Received an A grade for the project
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Q1. Regarding AWS networking, Jenkins, Terraform, Linux
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Q2. Write dockerfile to run python script.
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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.
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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
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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. Explain about AWS Infrastructure
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AWS Infrastructure is a collection of physical and virtual resources that provide the foundation for AWS cloud services.
• AWS Infrastructure includes data centers, networking, compute, storage, and security services.

• AWS Regions and Availability Zones provide geographic redundancy and fault tolerance.

• AWS offers a variety of infrastructure services, such as EC2, S3, and RDS, that can be used to build and deploy application...read more
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Q2. Explain about Monitoring in DevOps
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Monitoring in DevOps is the process of observing and measuring the performance of the system to ensure its availability and reliability.
• Monitoring helps in identifying issues and potential problems before they become critical.

• It involves collecting and analyzing data from various sources such as logs, metrics, and events.

• Monitoring tools like Nagios, Zabbix, and Prometheus are used to automate the process.

• It helps in i...read more
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Q1. Ci cd pipeline and variables?
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Q2. Blue green and canary deployment kubernetes
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Q3. Security in Terraform
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Security in Terraform involves managing sensitive data, implementing access controls, and using secure communication channels.
• Use Terraform's sensitive data handling features like sensitive variables and sensitive outputs to protect sensitive information.

• Implement access controls using Terraform's built-in features like IAM policies, resource-level permissions, and secure storage backends.

• Use secure communication chann...read more
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Q4. Helm chart and how to use it?
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Helm is a package manager for Kubernetes that simplifies the deployment and management of applications.
• Helm charts are packages of pre-configured Kubernetes resources that can be easily deployed using Helm.

• Helm charts are written in YAML and can include templates for Kubernetes manifests.

• Helm allows for easy versioning, sharing, and management of Kubernetes applications.

• To use Helm, you need to install the Helm client ...read more
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Q5. Branching strategies
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