Tata Communications Devops Engineer Interview Questions, Process, and Tips

Q1. Questions related to linux,docker,kubernets,ansible etc
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Easy mostly from time work problem

Hackerearth interview round was conducted

Q1. More about kubernetes and docker
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Q1. About your current work, roles and responsibilities, how do you debug issues more on kubernetes
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Q1. Questions on Docker, multistage dockerfile, all about docker and its troubleshooting
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Q1. Jenkins plugin debugging, kubernetes issues debugging, branching strategies, release management and shell scripting on how would you monitor k8 crashing pods in all namespaces
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Q1. About previous experience, more on work culture and why do you want to switch
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Q1. Where is Dotnet used?
Ans. 
Dotnet is used for developing web applications, desktop applications, mobile apps, cloud services, and games.
• Web applications

• Desktop applications

• Mobile apps

• Cloud services

• Games
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Q1. Devops life cycle , CICD, Ansible, Shell and groovy script, Jenkins , Gitlab
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Q2. Linux , Networking , past company challenges
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Q1. More detailed as per round 1
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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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Just gave one peoblem and asked to code it.

Q1. Questions about networking.
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Q2. Different topologies.
Ans. 
Different network topologies refer to the ways in which devices are connected in a network.
• Bus Topology: all devices are connected to a single cable

• Star Topology: all devices are connected to a central hub

• Ring Topology: each device is connected to two other devices, forming a ring

• Mesh Topology: each device is connected to every other device in the network

• Hybrid Topology: a combination of two or more different topologie
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Q1. Just general HR questions.
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