Cognizant AWS Devops Engineer Interview Questions and Answers

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. Couple of AWS questions
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Q2. Only focused on what havent mentioned in the job description on top of it the interviewer is no aware of the concepts unable to understand the answers
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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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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. Jenkins devops tools sonar nexus
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Q2. Aws cli questions python questions
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Q3. Kubernetes pod creation teplicatset events in kubernetes ingress controller
Ans. 
Kubernetes pod creation and replicaset events in Kubernetes Ingress controller.
• Pod creation involves defining a pod specification in a YAML file and using 'kubectl create' command to create the pod.

• Replicaset events can be monitored using 'kubectl describe replicaset' command to check for events related to the replicaset.

• Ingress controller manages external access to services in a Kubernetes cluster by routing traffic b...read more
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Q1. Jenkins job creation image in docker
Ans. 
Creating a Jenkins job using an image in Docker
• Create a Dockerfile with necessary configurations for Jenkins job

• Build a Docker image using the Dockerfile

• Run a Jenkins container using the Docker image

• Configure Jenkins job to use the Docker image as the build environment
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Q2. Pod creation servers creation docker login
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Q3. Hakkakbankaklananbakakanannala
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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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