Mphasis Module DevOps Lead Interview Questions and Answers

Q1. What is iap tunneling
Ans. 
IAP tunneling refers to the process of securely accessing internal resources from outside a network using Identity-Aware Proxy.
• IAP tunneling allows users to securely access internal resources without exposing them to the public internet.

• It uses Identity-Aware Proxy to authenticate and authorize users before granting access to the resources.

• This helps organizations maintain a secure network environment while enabling re
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Q2. What is canary deployment
Ans. 
Canary deployment is a technique used to reduce risk by rolling out new features to a small subset of users before a full release.
• Canary deployment involves gradually rolling out a new version of software to a small subset of users or servers.

• This allows for monitoring of the new version's performance and stability before a full release.

• If the canary deployment is successful, the new version can be gradually rolled out...read more
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Q1. They asked me to write a dockerfile
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Q2. Minimal questions about linux
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20 questions in 15 mins

Q1. Difference between HTTP AND HTTPS
Ans. 
HTTP is unsecured protocol while HTTPS is secured protocol using SSL/TLS encryption.
• HTTP stands for Hypertext Transfer Protocol, while HTTPS stands for Hypertext Transfer Protocol Secure.

• HTTP operates on port 80, while HTTPS operates on port 443.

• HTTPS uses SSL/TLS certificates to encrypt data transmitted over the network, providing a secure connection.

• HTTPS is essential for websites that handle sensitive information li...read more
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Q2. What do you mean by release management
Ans. 
Release management involves planning, scheduling, and controlling the software release process.
• Planning and coordinating the release of software updates

• Ensuring that the release process is smooth and efficient

• Managing dependencies and version control

• Communicating with stakeholders about release timelines and changes

• Automating release processes to improve efficiency
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Q1. Share Your experience on Creating AWS resources. GUI or using IAC tool?
Ans. 
I primarily use IAC tools like Terraform to create AWS resources for consistency, version control, and automation.
• I prefer using IAC tools like Terraform for creating AWS resources as it allows for infrastructure as code, version control, and automation.

• Using IAC tools ensures consistency in resource creation across environments.

• GUI can be useful for quick prototyping or exploring AWS services, but IAC is more efficien...read more
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Q2. Have you got any issues in pod, while creating or monitoring pods in the kubernetes cluster?
Ans. 
Yes, I have faced issues while creating or monitoring pods in a Kubernetes cluster.
• One common issue is pods getting stuck in a pending state due to resource constraints or scheduling issues.

• Another issue is pods crashing frequently due to misconfigured settings or incompatible container images.

• Monitoring pods can be challenging, especially when dealing with a large number of pods and trying to track their health and pe...read more
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Q3. What are use of Versioning in S3? Have you got any issues in working using S3?
Ans. 
Versioning in S3 allows for preserving, retrieving, and restoring every version of an object stored in a bucket.
• Enables recovery from unintended user actions or application failures

• Helps in maintaining different versions of objects for audit or compliance purposes

• Prevents accidental deletion or overwriting of objects

• Useful for tracking changes and rolling back to previous versions if needed
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Q4. What are the Devops tools, you have experience on?
Ans. 
I have experience with various DevOps tools including Jenkins, Docker, Ansible, and Terraform.
• Jenkins

• Docker

• Ansible

• Terraform
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Q1. What is the challenges you have faced in kubernetes
Ans. 
Challenges faced in Kubernetes include networking issues, resource management, and complexity of configurations.
• Networking issues can arise due to misconfigurations or conflicts between pods

• Resource management challenges include optimizing resource allocation and scaling

• Complexity of configurations can lead to difficulties in troubleshooting and maintaining the cluster
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Q2. What is the cicd pipeline you have troubleshoot
Ans. 
I have troubleshooted a CI/CD pipeline for a microservices architecture using Jenkins and Docker.
• Identified and resolved issues with Jenkins plugins causing build failures

• Optimized Docker images to reduce build times and improve deployment speed

• Debugged pipeline scripts to ensure proper integration and testing of microservices
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Q1. Questions on Docker
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Q1. The general cloud and devops related to your project based questions. They deep dive into Aws and docker and Kubernetes questions.
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Q2. Expalin kubernetes architecture
Ans. 
Kubernetes architecture is a container orchestration platform that manages containerized applications across a cluster of nodes.
• Kubernetes follows a master-slave architecture with a master node and multiple worker nodes.

• Master node components include API server, scheduler, controller manager, and etcd.

• Worker node components include kubelet, kube-proxy, and container runtime (e.g. Docker).

• Nodes communicate with each oth...read more
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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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