Google Devops Engineer Interview Questions and Answers

Q1. What is VPC and its concepts?
Ans. 
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 can c...read more
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Q2. What are the two health checks when EC2 instance is launched?
Ans. 
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.
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Q3. What is difference between IAM group and IAM roles?
Ans. 
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
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Q1. Explain the 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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Q2. Write the terraform script
Ans. 
Writing a terraform script for infrastructure provisioning
• Define provider and required variables

• Create resources like instances, networks, and storage

• Use modules for reusable code

• Implement variables and outputs for flexibility

• Leverage terraform state for tracking changes
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Q1. Write the dockerfile
Ans. 
A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image.
• Start with a base image

• Use the RUN instruction to execute commands

• Use the COPY instruction to add files from your Docker client’s current directory

• Use the CMD instruction to specify the command to run when the container starts
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Q1. What are your salary expectations
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Q1. About EKS in AWS
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Q2. About ECS in AWS
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Medium DSA questions

Q1. Terraform uses and flow in your company
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Q2. Remote backend in terraform?
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Q1. Write down the code of scripted and declarative pipeline
Ans. 
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' } } } }
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They will provide 10-20 aptitude questions and 10-20 coding outputs or flowchart related questions

They will give 5 coding questions, you can write in any programming language, irrespective of output they check how you are thinking and which logic you are using and efficiency of the code

In this round they will give bulk application programme no need to finish it but they will check your thought process and depth in oops concepts,

Q1. In this round they will ask technical questions, you have to explain use case with live examples
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Q2. What is static key word where can we use
Ans. 
The static keyword in Java is used to create variables and methods that belong to the class itself, rather than instances of the class.
• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables
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Q3. Why public static void main
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The public static void main method is the entry point for a Java program.
• public: Access modifier indicating that the method can be accessed from any other class.

• static: Indicates that the method belongs to the class itself, not an instance of the class.

• void: Indicates that the method does not return any value.

• main: The name of the method that serves as the entry point for the program.

• String[] args: An array of strings ...read more
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Q1. Will ask casual questions
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Q1. Mostly related to kubernetes docker and other devops tools fundamentals
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Q1. Salary negotiations, growth etc
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