Amdocs Devops Engineer Interview Questions and Answers

Terraform automates infrastructure provisioning, ensuring consistency and scalability in our DevOps workflows.

• Infrastructure as Code (IaC): We define our infrastructure using Terraform configuration files, enabling version control and collaboration.

• Environment Management: Terraform allows us to create and manage multiple environments (dev, staging, production) with ease.

• Resource Provisioning: We use Terraform to p...read more

Remote backend in Terraform allows state management in a centralized location, enabling collaboration and consistency.

• Enables multiple team members to work on the same infrastructure without conflicts.

• Common remote backends include AWS S3, Azure Blob Storage, and HashiCorp Consul.

• Example: Using AWS S3 as a backend requires specifying the bucket and key in the Terraform configuration.

• State locking can be implemente...read more

OOPs in Java stands for Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.

• OOPs concepts help in organizing and structuring code for better reusability and maintainability.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation hides the internal state of an object and only exposes necessary functionalities.

• Polymorphis...read more

Scripted and declarative pipelines in Jenkins for DevOps Engineer role

• Scripted pipeline uses Groovy script syntax

• Declarative pipeline uses a more structured format with predefined stages

• Scripted pipeline example: node { stage('Build') { echo 'Building' } }

• Declarative pipeline example: pipeline { agent any stages { stage('Build') { steps { echo 'Building' } } } }

The two health checks when an EC2 instance is launched are System Status Checks and Instance Status Checks.

• System Status Checks ensure that the underlying host system is healthy and reachable.

• Instance Status Checks ensure that the instance is running properly and can be accessed.

• Examples: System Status Checks may include checking network connectivity, while Instance Status Checks may include verifying system logs.

VPC stands for Virtual Private Cloud, a virtual network dedicated to your AWS account.

• VPC allows you to create a logically isolated section of the AWS Cloud where you can launch AWS resources.

• You can define your own IP address range, create subnets, configure route tables, and network gateways within a VPC.

• VPC provides security by allowing you to control inbound and outbound traffic to and from your instances.

• You ...read more

IAM groups are collections of IAM users, while IAM roles are permissions that can be assumed by users or services.

• IAM groups are used to manage permissions for multiple users at once

• IAM roles are used to delegate permissions to users or services

• IAM groups can contain multiple users, while IAM roles can only be assumed by one entity at a time

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 eac...read more