Ksf-9 Corporate Services Devops Engineer Interview Questions and Answers

Q1. They asked me to write a dockerfile
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Q2. Minimal questions about linux
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Q1. What is devops?
Ans. 
DevOps is a software development methodology that combines software development (Dev) with IT operations (Ops) to improve collaboration and efficiency.
• DevOps focuses on automating and streamlining the software development process.

• It emphasizes communication and collaboration between development and operations teams.

• DevOps aims to shorten the development lifecycle and provide continuous delivery of high-quality software...read more
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Q2. How to handle devops operations?
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Devops operations involve managing the development and deployment of software applications.
• Automate repetitive tasks to improve efficiency

• Use version control systems like Git for tracking changes

• Implement continuous integration and continuous deployment pipelines

• Monitor system performance and troubleshoot issues proactively
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Q1. What is the difference between devops and sre?
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DevOps focuses on collaboration between development and operations teams, while SRE focuses on reliability and scalability of systems.
• DevOps is a cultural and organizational practice that emphasizes collaboration and communication between development and operations teams.

• SRE (Site Reliability Engineering) is a specific role within an organization that focuses on ensuring the reliability, scalability, and performance of...read more
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Q2. How is the devops important?
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DevOps is important for streamlining software development and deployment processes.
• DevOps helps in automating manual tasks, increasing efficiency and reducing errors.

• It promotes collaboration between development and operations teams, leading to faster delivery of software.

• DevOps enables continuous integration and continuous delivery (CI/CD) pipelines, ensuring rapid and reliable software releases.

• It improves overall so...read more
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Q1. What is Persistent volume
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Persistent volume is a storage volume that exists beyond the life cycle of a container.
• Persistent volumes are used to store data that needs to persist even if the container is deleted or recreated.

• They are decoupled from the container and can be attached to different containers.

• Examples include network-attached storage (NAS), cloud storage, and local storage.

• Persistent volumes are managed by the storage administrator r
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Q2. Volumein kubernetes which can be attached and deattached
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PersistentVolumes (PVs) in Kubernetes can be attached and detached.
• PersistentVolumes (PVs) can be attached to pods using PersistentVolumeClaims (PVCs).

• PVs can be detached from pods when no longer needed.

• Examples of PV types include NFS, iSCSI, and AWS EBS.
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Q1. Question on cloud and kubernetes
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Q1. Nothing much just basic hr question
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Q1. What is vault & how it is integrated with your AWS
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Vault is a tool for managing secrets and protecting sensitive data.
• Vault securely stores and manages sensitive information such as API keys, passwords, and certificates.

• It provides a centralized place for managing access control and encryption of data.

• Vault can be integrated with AWS to securely store and retrieve AWS credentials and other sensitive information.

• Integration with AWS allows for automated provisioning and...read more
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Q1. Explain 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).

• Pods are the smallest deployabl...read more
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Q2. Types of instances in AWS
Ans. 
Types of instances in AWS include On-Demand Instances, Reserved Instances, and Spot Instances.
• On-Demand Instances: Pay for compute capacity by the hour or second with no long-term commitments.

• Reserved Instances: Reserve capacity for 1 or 3 years in exchange for a significant discount.

• Spot Instances: Bid on unused EC2 capacity and potentially save up to 90% compared to On-Demand prices.
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Q1. What is your Strength?
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Q1. What is node affinity?
Ans. 
Node affinity is a feature in Kubernetes that allows pods to be scheduled onto nodes based on labels assigned to nodes.
• Node affinity is used to ensure that pods are scheduled onto nodes that meet certain criteria specified in the pod's affinity rules.

• There are two types of node affinity: requiredDuringSchedulingIgnoredDuringExecution and preferredDuringSchedulingIgnoredDuringExecution.

• Node affinity rules can be based o...read more
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Q2. What is security groups?
Ans. 
Security groups are virtual firewalls that control inbound and outbound traffic for instances in a cloud network.
• Security groups are used to control traffic at the instance level.

• They act as virtual firewalls for instances in a cloud network.

• They allow you to specify which traffic is allowed to reach your instances.

• You can define rules for inbound and outbound traffic based on protocols, ports, and IP addresses.

• Securit...read more
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Cloud Devops - Azure and AWS, Security, EC2, RBAC

Q1. NACL, DR, Authorization, Authentication
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