Aws Interview Questions For Devops

Faqs On Aws Devops Interview Questions

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Q1. Is DevOps a promising career for freshers?

Yes, DevOps is a good option for freshers who have the necessary skills. These domain skills include programming, Linux, knowledge of cloud service platforms, and CI/CD. The DevOps domain has ample opportunities for a rewarding career.

Q2. Does DevOps need coding?

Yes, but DevOps engineers have a unique set of coding responsibilities as they donât have specialization in a single scripting language but need to know multiple languages like Python, PHP, Java, JavaScript, etc.

Q3. What skills are required for AWS DevOps?

Some crucial skills for an AWS DevOps Engineer are observability, operations, automation, continuous delivery, cloud, infrastructure as code, configuration management, etc.

Q4. What is the main goal of DevOps?

The main goal of DevOps is to optimize the flow of value from the idea to the end-user and make the delivery of value effective and efficient. DevOps also focuses on culture and cultural changes in the company in a big way.

Q5. What is the primary difference between agile and DevOps?

The essential difference between the two is that while agile is about increasing the efficiency of developers and development cycles, DevOps allows continuous integration and continuous delivery by utilizing the operations team.

Q1 What Is Version Control

This is probably the easiest question you will face in the interview. My suggestion is to first give a definition of Version control. It is a system that records changes to a file or set of files over time so that you can recall specific versions later. Version control systems consist of a central shared repository where teammates can commit changes to a file or set of file. Then you can mention the uses of version control.

Version control allows you to:

Revert files back to a previous state.
Revert the entire project back to a previous state.
Compare changes over time.
See who last modified something that might be causing a problem.
Who introduced an issue and when.

What Is Aws Cloudtrail

AWS CloudTrail is a service that enables governance, compliance, operational auditing, and risk auditing of your AWS account. CloudTrail supports logging events for many AWS services. The specifics for each supported service can be found in that service’s guide.

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Q3 Describe Branching Strategies You Have Used

This question is asked to test your branching experience so tell them about how you have used branching in your previous job and what purpose does it serves, you can refer the below points:

Feature branchingA feature branch model keeps all of the changes for a particular feature inside of a branch. When the feature is fully tested and validated by automated tests, the branch is then merged into master.
Task branchingIn this model each task is implemented on its own branch with the task key included in the branch name. It is easy to see which code implements which task, just look for the task key in the branch name.
Release branchingOnce the develop branch has acquired enough features for a release, you can clone that branch to form a Release branch. Creating this branch starts the next release cycle, so no new features can be added after this point, only bug fixes, documentation generation, and other release-oriented tasks should go in this branch. Once it is ready to ship, the release gets merged into master and tagged with a version number. In addition, it should be merged back into develop branch, which may have progressed since the release was initiated.

In the end tell them that branching strategies varies from one organization to another, so I know basic branching operations like delete, merge, checking out a branch etc.

What Do You Understand By Microservices In Aws Devops

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Microservices are design techniques for constructing a single application from various services. Each of these services will have its process structure and will interact with each other over a structured interface that is both minimal and simple to use. These services communicate mostly through HTTP and API queries.

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Q2 What Are The Benefits Of Using Version Control

I will suggest you to include the following advantages of version control:

With Version Control System , all the team members are allowed to work freely on any file at any time. VCS will later allow you to merge all the changes into a common version.

All the past versions and variants are neatly packed up inside the VCS. When you need it, you can request any version at any time and youll have a snapshot of the complete project right at hand.

Every time you save a new version of your project, your VCS requires you to provide a short description of what was changed. Additionally, you can see what exactly was changed in the files content. This allows you to know who has made what change in the project.

A distributed VCS like Git allows all the team members to have complete history of the project so if there is a breakdown in the central server you can use any of your teammates local Git repository.

Explain Some Of The Most Popular Branching Strategies In Aws Devops

Release branching – Once the develop branch has enough functionality for a release, you can replicate it to make a Release branch. Because this branch starts the next release cycle, you can add no new additions after this point. Documentation creation, bug fixing, and other release-related work are possible contributions. When the release can deploy, it is merged into the master and assigned a version number. It also integrates into the development branch, as modification might occur after the first release.
Feature branching – This branching approach keeps track of all changes made to a single feature inside a branch. Once you thoroughly evaluate the feature and approve using automated tests, the branch integrates into the master.
Task branching – It implements each task in its branch in this branching architecture. In the branch name, the task key is mentioned. To determine which code implements which task, you simply need to look at the task key in the branch name.

What Is Vpc In Aws Devops

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A VPC is a cloud network that is mapped to an AWS account. It forms one among the first points in the AWS infrastructure that helps users create regions, subjects, routing tables, and even Internet gateways in the AWS accounts. Doing this will provide the users with the ability to use EC2 or RDS as per requirements.

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How Can You Handle Continuous Integration And Deployment In Aws Devops

One must use AWS Developer tools to help get started with storing and versioning an applications source code. This is followed by using the services to automatically build, test, and deploy the application to a local environment or to AWS instances.

It is advantageous, to start with the CodePipeline to build the continuous integration and deployment services and later on use CodeBuild and CodeDeploy as per need.

Q5 How Do All These Tools Work Together

Given below is a generic logical flow where everything gets automated for seamless delivery. However, this flow may vary from organization to organization as per the requirement.

Developers develop the code and this source code is managed by Version Control System tools like Git etc.

Developers send this code to the Git repository and any changes made in the code is committed to this Repository.

Jenkins pulls this code from the repository using the Git plugin and build it using tools like Ant or Maven.

Configuration management tools like puppet deploys & provisions testing environment and then Jenkins releases this code on the test environment on which testing is done using tools like selenium.

Once the code is tested, Jenkins send it for deployment on the production server .

After deployment It is continuously monitored by tools like Nagios.

Docker containers provides testing environment to test the build features.

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Q4 Explain How You Can Move Or Copy Jenkins From One Server To Another

I will approach this task by copying the jobs directory from the old server to the new one. There are multiple ways to do that I have mentioned them below: You can:

Move a job from one installation of Jenkins to another by simply copying the corresponding job directory.
Make a copy of an existing job by making a clone of a job directory by a different name.
Rename an existing job by renaming a directory. Note that if you change a job name you will need to change any other job that tries to call the renamed job.

What Do You Understand By Amazon Elastic Container Service

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The Amazon Elastic Container Service is a fully managed container AWS service that allows you to easily create, manage, and run large-scale Docker containers. It also works with Amazon Route 53, AWS Identity and Access Management , and Amazon CloudWatch, among other AWS services. You can also plan, organize, and run batch processing tasks using the entire range of AWS services such as Amazon EC2, Fargate, and Amazon EC2 Spot Instances.

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Q10 What Is The Difference Between Assert And Verify Commands In Selenium

I have mentioned differences between Assert and Verify commands below:

Assert command checks whether the given condition is true or false. Lets say we assert whether the given element is present on the web page or not. If the condition is true, then the program control will execute the next test step. But, if the condition is false, the execution would stop and no further test would be executed.
Verify command also checks whether the given condition is true or false. Irrespective of the condition being true or false, the program execution doesnt halts i.e. any failure during verification would not stop the execution and all the test steps would be executed.

What Do You Understand By Aws Codestar In Aws Devops

AWS CodeStar is a cloud-based tool that allows you to create, manage, and collaborate on software development projects on Amazon Web Services. AWS Code Star enables users to efficiently handle all of the processes required in software development as it provides them with a unified user interface. With an AWS CodeStar project, you can easily design, build, and run applications on AWS. An AWS CodeStar project generates and integrates AWS services for your application development process. The process toolkit may include source control, build, deployment, virtual servers or serverless resources, depending on your AWS CodeStar project design.

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Linux System Administrator/devops Interview Questions

A collection of linux sysadmin/devops interview questions. Feel free to contribute via pull requests, issues or email messages.

What did you learn yesterday/this week?
Talk about your preferred development/administration environment.
Tell me about the last major Linux project you finished.
Tell me about the biggest mistake you’ve made in and how you would do it differently today. What did you learn from this experience?
Why we must choose you?
What function does DNS play on a network?
What is an HTTP proxy and how does it work?
Describe briefly how HTTPS works.
What is SMTP? Give the basic scenario of how a mail message is delivered via SMTP.
What is RAID? What is RAID0, RAID1, RAID5, RAID10?
What is a level 0 backup? What is an incremental backup?
Describe the general file system hierarchy of a Linux system.
Which difference have between public and private SSH key?

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Mention Some Of The Essential Features Of Continuous Testing Tools

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The following are the significant features of continuous testing:

Test optimization ensures that tests produce accurate outcomes and information for further usage. It covers test data management, Test Optimization Management, and Test Maintenance.
Enhanced Analysis – It uses automation in scope assessment/prioritization, changes effect analysis, and static code analysis to prevent problems and gain more within each loop.
Policy Evaluation- It ensures that all procedures follow the company’s changing business needs and fulfill all regulatory needs.
Risk Analysis – It controls Test coverage optimization, technical debt, risk management activities, and performance evaluation to ensure that the build is ready for the next stage.
Service Virtualization- Checks the availability of real-world testing situations. Service visualization allows you to access a virtual depiction of the testing phases you’ll need, ensures their availability, and cuts down on time you’ll spend setting up the test environment.
Requirements Tracking ensures that no modification is required and that actual conditions are satisfied. An object assessment determines which requires extra validation, is in danger, or performing as intended.

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Q20how Do I See A List Of All Of The Ansible: Variables

Ansible by default gathers facts about the machines under management, and these facts can be accessed in Playbooks and in templates. To see a list of all of the facts that are available about a machine, you can run the setup module as an ad-hoc action:Ansible -m setup hostnameThis will print out a dictionary of all of the facts that are available for that particular host.

How Will You Use Aws To Operate Kubernetes

There are three ways to get Kubernetes running on AWS.-

Amazon EC2 is a good option if you want complete control over your Kubernetes implementation.
You may employ Amazon EKS to get a Kubernetes control plane that is automatically controlled and deployed.
To enable deployments to run quicker, you can utilize Amazon ECR to store, manage, and encrypt docker images.

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What Is The Use Of Aws Developer Tools In Aws Devops

The AWS Developer Tools are a range of services designed to help DevOps developers and IT operations professionals deliver software quickly and reliably. These services work together to enable you to store, and version control your application’s source code while also building, testing, and deploying it to AWS or your on-premises environment. With these services and third-party tools, you can use AWS Code Pipeline to manage an end-to-end software deployment process. You can also integrate each service independently with your existing tools using AWS Code Pipeline.

Discuss How Aws Devops Works With Code Commit

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AWS Code Commit is a ” fully managed ” source control solution.” It allows businesses to host private Git repositories that are safe and extensible. Code Commit can help with maintaining one’s source control system. Apart from that, there is no need to worry about infrastructure scaling. It can store anything securely, including source code, binaries, etc.

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What Is A Puppet Manifest

Ans: Puppet Manifest is a base component for the Puppet configuration management policy. In Puppet Master, each Puppet node or Puppet Agent has its configuration details written in the native Puppet language. The details that are written in a language that puppets can understand and describe how resources should be configured are termed as Puppet manifests.

Puppet Manifests declares resources that define a state to be enforced on a node. They are considered to be building blocks for complex Puppet modules.

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