iCloudEMS AWS Devops Engineer Interview Questions, Process, and Tips

Q1. How to give access of s3 bucket to user in a secure way?
Ans. 
Grant access to S3 bucket securely by using IAM policies and roles.
• Create an IAM policy with specific permissions for the S3 bucket

• Attach the IAM policy to an IAM role

• Assign the IAM role to the user or group that needs access

• Use bucket policies for more granular control if needed
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Q2. Difference between iam role and iam group?
Ans. 
IAM role is used to grant permissions to entities, while IAM group is used to group users with similar permissions.
• IAM role is used to delegate permissions to entities like EC2 instances or Lambda functions

• IAM group is used to group users with similar permissions for easier management

• IAM role can be assumed by trusted entities, while IAM group is used for managing user permissions
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Q1. What I'd diff between git fetch and git pull
Ans. 
git fetch downloads changes from the remote repository, while git pull downloads changes and merges them into the current branch.
• git fetch only downloads changes from the remote repository, but does not merge them into the current branch

• git pull downloads changes from the remote repository and merges them into the current branch

• git fetch is useful for reviewing changes before merging, while git pull is a shortcut for f
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Q2. What diff add and copy command
Ans. 
The 'add' command is used to add files from the source directory to the destination directory in a Dockerfile, while the 'copy' command is used to copy files from the source directory to the destination directory in a Dockerfile.
• The 'add' command can also accept URLs as the source, while the 'copy' command cannot.

• The 'add' command can automatically extract compressed files, while the 'copy' command cannot.

• The 'copy' co...read more
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Q1. Salary discusion
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Q1. VPC architecture
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Q2. End to end pipeline flow
Ans. 
End to end pipeline flow refers to the process of automating the deployment of software from development to production.
• Start with code development and version control

• Move to continuous integration for automated testing

• Utilize continuous delivery for deployment to staging environments

• Implement continuous deployment for automatic deployment to production

• Monitor and analyze performance and feedback for continuous improvem
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How aws vs verulation.

Q1. Nacl vs security group?
Ans. 
Nacl is a stateless firewall while security group is a stateful firewall in AWS.
• NACL operates at the subnet level, while security groups operate at the instance level.

• NACL rules are evaluated in order, while security group rules are evaluated independently.

• NACLs are stateless, meaning you must create rules for both inbound and outbound traffic, while security groups are stateful.

• NACLs are more flexible in terms of allo...read more
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Q2. Aws cloudformation
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Q1. Reason for change
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Q2. Salary discuss how much excellent
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Q1. What is docker attached and detached mode how to get out of docker exec without closing the terminal of docker exec
Ans. 
Docker attached mode runs a container in the foreground, while detached mode runs it in the background.
• In attached mode, you can see the container's output in the terminal where it was started.

• In detached mode, the container runs in the background and you can continue using the terminal.

• To exit a Docker exec session without closing the terminal, press Ctrl + P, Ctrl + Q.

• You can also use the command 'exit' or 'Ctrl + D'
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Q1. What is ECS and EKS. If code is paused state, how to troubleshoot in ECS How to troubleshoot if ingress controller is not working What is ALB?
Ans. 
ECS is Elastic Container Service and EKS is Elastic Kubernetes Service. Troubleshoot code in paused state by checking logs and restarting tasks. Troubleshoot ingress controller by checking configuration and logs. ALB is Application Load Balancer.
• ECS is a managed container orchestration service by AWS

• EKS is a managed Kubernetes service by AWS

• To troubleshoot code in paused state in ECS, check CloudWatch logs, task defini...read more
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Aptitude test is must and computer networking

Q1. Cloud computing
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Q1. Explain jenkins ci/cd flow
Ans. 
Jenkins CI/CD flow automates the software delivery process from code commit to deployment.
• Jenkins pulls code from version control system

• Builds the code and runs automated tests

• If tests pass, deploys the code to a staging environment

• Manual testing is done in staging environment

• If approved, Jenkins deploys the code to production environment

• Logs and reports are generated throughout the process
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Q1. What is the salary expectancy
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