Carrier Devops Engineer Interview Questions and Answers

Scenerio based coding

Q1. K8s mode of authentication
Ans. 
Kubernetes supports multiple modes of authentication, including X.509 certificates, bearer tokens, and service accounts.
• Kubernetes supports X.509 client certificates for authentication.

• Bearer tokens can be used for authentication in Kubernetes.

• Service accounts are another mode of authentication in Kubernetes.
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Q2. Cluster upgrade
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Q1. How does networking work on kubernetes? From a frontend to a backend application
Ans. 
Networking on Kubernetes involves creating services to allow communication between frontend and backend applications.
• Kubernetes uses Services to abstract networking, allowing frontend to backend communication

• Services can be of type ClusterIP, NodePort, LoadBalancer, or ExternalName

• Pods are grouped into Services based on labels and selectors

• Communication between frontend and backend applications is done through Service
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Q1. Write Docker file structure for nginx image,How to resolve Git conflicts.

Ans. 

Docker file structure for nginx image and resolving Git conflicts

• Dockerfile structure for nginx image: FROM nginx, COPY index.html /usr/share/nginx/html, EXPOSE 80

• To resolve Git conflicts: git status, git pull, git add , git commit -m 'Resolved conflict', git push

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