Impetus Technologies AWS Devops Engineer Interview Questions and Answers

Q1. Share Your experience on Creating AWS resources. GUI or using IAC tool?
Ans. 
I primarily use IAC tools like Terraform to create AWS resources for consistency, version control, and automation.
• I prefer using IAC tools like Terraform for creating AWS resources as it allows for infrastructure as code, version control, and automation.

• Using IAC tools ensures consistency in resource creation across environments.

• GUI can be useful for quick prototyping or exploring AWS services, but IAC is more efficien...read more
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Q2. Have you got any issues in pod, while creating or monitoring pods in the kubernetes cluster?
Ans. 
Yes, I have faced issues while creating or monitoring pods in a Kubernetes cluster.
• One common issue is pods getting stuck in a pending state due to resource constraints or scheduling issues.

• Another issue is pods crashing frequently due to misconfigured settings or incompatible container images.

• Monitoring pods can be challenging, especially when dealing with a large number of pods and trying to track their health and pe...read more
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Q3. What are use of Versioning in S3? Have you got any issues in working using S3?
Ans. 
Versioning in S3 allows for preserving, retrieving, and restoring every version of an object stored in a bucket.
• Enables recovery from unintended user actions or application failures

• Helps in maintaining different versions of objects for audit or compliance purposes

• Prevents accidental deletion or overwriting of objects

• Useful for tracking changes and rolling back to previous versions if needed
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Q4. What are the Devops tools, you have experience on?
Ans. 
I have experience with various DevOps tools including Jenkins, Docker, Ansible, and Terraform.
• Jenkins

• Docker

• Ansible

• Terraform
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Q1. Questions on Network Part
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Q1. What is docker File ? Explain
Ans. 
Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image.
• Dockerfile is used to build Docker images by specifying a series of instructions.

• It includes commands like FROM, RUN, COPY, CMD, etc.

• Each instruction in the Dockerfile creates a layer in the image.

• Dockerfile is used to automate the process of creating Docker containers.

• Example: FROM ubuntu:latest, RUN
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Q2. What is webhook & why??
Ans. 
Webhook is a method of augmenting or altering the behavior of a web page, or web application, with custom callbacks.
• Webhook is a way for an application to provide other applications with real-time information.

• It allows developers to receive instant notifications when a specific event occurs.

• Webhooks are commonly used in automation, continuous integration, and deployment processes.

• Examples include receiving notification...read more
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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. Related to docker and kubernetes
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Q1. Salary negotiation and compensation
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Q1. Tell me about your project
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Q2. What issues did you face while deploying the application
Ans. 
I faced issues with network connectivity, configuration errors, and dependency mismatches while deploying the application.
• Network connectivity issues causing deployment failures

• Configuration errors leading to incorrect application setup

• Dependency mismatches causing compatibility issues

• Resource constraints impacting deployment performance
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Q3. What are S3 life cycle rules
Ans. 
S3 life cycle rules automate the management of objects in S3 buckets based on predefined criteria.
• Automate the transition of objects to different storage classes based on age or other criteria

• Automatically delete objects after a certain period of time

• Reduce storage costs by moving less frequently accessed data to cheaper storage options
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Q4. What have you used to check the quality of the code written to deploy
Ans. 
I have used code reviews, automated testing, static code analysis tools, and continuous integration to check the quality of code.
• Code reviews by peers to catch bugs and ensure best practices

• Automated testing using tools like Selenium for functional testing and JUnit for unit testing

• Static code analysis tools like SonarQube to identify code smells and potential bugs

• Continuous integration with tools like Jenkins to autom
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Q5. What is Codepipeline used for
Ans. 
CodePipeline is a continuous integration and continuous delivery service for fast and reliable application and infrastructure updates.
• Automates the build, test, and deploy phases of your release process

• Supports integration with various AWS services like CodeBuild, CodeDeploy, and Lambda

• Allows for custom actions and third-party integrations

• Provides visualization of the entire release process with customizable dashboards
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Q6. How do you use blue green deployment and what it is
Ans. 
Blue green deployment is a deployment strategy where two identical production environments are used to minimize downtime and risk.
• Blue green deployment involves running two identical production environments, one 'blue' and one 'green'.

• Traffic is routed to the 'blue' environment while the 'green' environment is updated and tested.

• Once the 'green' environment is deemed stable, traffic is switched to it and the 'blue' env...read more
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Q1. What are your Salary expectations
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