Adenza Associate DevOps Engineer Interview Questions and Answers

Q1. What is ipconf.pl?
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Q2. What is the difference between scan vip & node vip?
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Q1. What is quarantile in Exadata?
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Q2. How to identify the master switch in Exadata?
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Q3. What is spine switch & leaf switch in exadata?
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One of the node of a 3 node cluster is down. Explain the step by step process to troubleshoot the issue.

Shell script & terraform code output was asked.

Q1. Mostly related to docker networking concept.
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Q2. How linux boot process work?
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Linux boot process involves several stages including BIOS, bootloader, kernel initialization, and user space initialization.
• BIOS (Basic Input/Output System) performs hardware initialization and loads bootloader

• Bootloader (GRUB, LILO) loads the Linux kernel into memory and starts it

• Kernel initializes devices, mounts the root filesystem, and starts the init process

• Init process (systemd, SysVinit) starts user space proces
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Q3. Git, merge abd rebase cherry-pick etc
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Q1. S3 storwge class
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Q2. Day to day activities in current role
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Q3. Amazon vpc advantages vpc peering
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Q4. Jenkins pipeline building
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Q5. Terraform validate command
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Q1. Did you face any challenge while creating the DevOps pipeline?
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Yes, I faced challenges while creating the DevOps pipeline.
• One challenge was integrating multiple tools and technologies into the pipeline.

• Another challenge was ensuring smooth communication and collaboration between different teams involved in the pipeline.

• I also faced challenges in automating the testing and deployment processes to achieve continuous integration and continuous delivery.

• Dealing with legacy systems and...read more
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Q2. How do your container communicate in Kubernetes?
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Containers in Kubernetes communicate with each other through networking and service discovery mechanisms.
• Containers within the same pod can communicate over localhost.

• Containers in different pods can communicate using Kubernetes services.

• Kubernetes assigns each pod a unique IP address for communication.

• Kubernetes also supports DNS-based service discovery for containers.
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Q3. If you want to restrict the communication between the kubernetes pod, how would you restrict that one?
Ans. 
Restricting communication between Kubernetes pods can be achieved using network policies.
• Use Network Policies in Kubernetes to define rules for pod-to-pod communication

• Specify which pods are allowed to communicate with each other based on labels

• Deny all traffic by default and only allow specific traffic as needed

• Example: Define a network policy to allow communication only between pods with label 'app=frontend' and 'app
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Q4. What is virtual private cloud or Vnet? What is the use of Vnet and why we use it in DevOps?
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A virtual private cloud (VPC) or Vnet is a private network in the cloud that allows you to isolate resources and control network traffic.
• VPC/Vnet provides a secure and isolated environment for resources in the cloud.

• It allows you to define your own IP address range, subnets, route tables, and network gateways.

• VPC/Vnet helps in creating a secure connection between on-premises data centers and cloud resources.

• It is used ...read more
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Q5. Can you tell me something about Ansible work in DevOps?
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Ansible is a popular automation tool used in DevOps for configuration management, application deployment, and orchestration.
• Ansible is agentless, meaning it does not require any software to be installed on the nodes being managed.

• It uses YAML syntax for writing playbooks, which are used to define automation tasks.

• Ansible can be used for tasks such as provisioning servers, deploying applications, and managing configurat...read more
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Q6. What is Client based development?
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Client based development is a software development approach where the client's needs and feedback are prioritized throughout the development process.
• Focus on meeting client requirements and expectations

• Regular communication and feedback from the client

• Iterative development cycles based on client input

• Client involvement in decision-making processes

• Examples: Agile development, customer-centric design
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Q7. What is resilience testing?
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Resilience testing is a type of testing that evaluates a system's ability to recover from failures and continue functioning.
• Resilience testing involves intentionally introducing failures or disruptions to a system to see how it responds.

• The goal of resilience testing is to identify weaknesses in the system's design or implementation that could lead to downtime or data loss.

• Examples of resilience testing include simulat...read more
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Q8. What are DevOps KPI?
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DevOps KPI are key performance indicators used to measure the success of DevOps practices in an organization.
• DevOps KPIs should align with business goals and objectives.

• Examples of DevOps KPIs include deployment frequency, lead time for changes, mean time to recover, and change failure rate.

• Monitoring KPIs helps in identifying areas for improvement and optimizing DevOps processes.
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Q9. What are the various branching strategies used in the version control system?
Ans. 
Various branching strategies in version control systems help manage code changes effectively.
• Mainline/Branch by Release: Each release has its own branch for bug fixes and maintenance.

• Feature Branching: Each new feature is developed in a separate branch and merged back to main branch after completion.

• Gitflow Workflow: Uses main, develop, feature, release, and hotfix branches for a structured workflow.

• Trunk-Based Develop...read more
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Q10. What is feature branching and task branching?
Ans. 
Feature branching and task branching are strategies used in version control systems to manage development tasks.
• Feature branching involves creating a separate branch for each new feature being developed, allowing for isolation and independent development.

• Task branching is similar to feature branching but is used for smaller tasks or bug fixes.

• Both feature branching and task branching help in organizing and managing cod...read more
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Q11. What is the difference b/w Continuous delivery and continuous deployment?
Ans. 
Continuous delivery focuses on automating the software delivery process up to production, while continuous deployment automatically deploys every change to production.
• Continuous delivery involves automating the software delivery process up to production, ensuring that code is always in a deployable state.

• Continuous deployment goes a step further by automatically deploying every change that passes automated tests to pro...read more
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Q12. Different phases in DevOps Methodology
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DevOps methodology consists of various phases including plan, code, build, test, release, deploy, operate, and monitor.
• Plan: Define goals, set priorities, and create a roadmap.

• Code: Develop and review code changes.

• Build: Compile the code and create executable files.

• Test: Verify code changes through automated testing.

• Release: Deploy changes to production environment.

• Deploy: Automate deployment process to various environ...read more
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Q13. What is blue green deployment pattern
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Blue green deployment pattern is a software release strategy that reduces downtime and risk by running two identical production environments.
• In blue green deployment, one environment (blue) is currently live and serving production traffic, while the other environment (green) is idle.

• Once the new version of the software is deployed to the green environment and tested thoroughly, traffic is switched from the blue to the ...read more
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Q14. What are key elements which are there in continuous testing tools?
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Key elements in continuous testing tools include automation, integration with CI/CD pipelines, reporting and analytics, scalability, and support for various testing types.
• Automation of test cases to ensure quick feedback on code changes

• Integration with CI/CD pipelines for seamless testing in the software delivery process

• Reporting and analytics capabilities to track test results and identify issues

• Scalability to handle ...read more
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Q15. Difference b/w centralized and distributed VCS
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Centralized VCS stores all versions of files in a central server, while distributed VCS allows each user to have a full copy of the repository.
• Centralized VCS has a single point of failure, while distributed VCS is more resilient.

• In centralized VCS, users need constant connection to the central server, while distributed VCS allows offline work.

• Examples of centralized VCS include SVN and CVS, while Git is a popular dist
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Q16. How do you setup the VPC with azure?
Ans. 
Setting up a VPC in Azure involves creating a virtual network, subnets, and configuring security groups.
• Create a virtual network in the Azure portal

• Define subnets within the virtual network

• Configure network security groups to control inbound and outbound traffic

• Establish peering connections with other VPCs if needed
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Q17. Describe about IAC and Configuration management
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IAC stands for Infrastructure as Code, which involves managing and provisioning infrastructure through code. Configuration management involves managing and maintaining the state of systems.
• IAC allows for automating the process of setting up and managing infrastructure using code

• Configuration management ensures that the desired state of systems is maintained consistently

• Tools like Terraform, Ansible, and Puppet are comm...read more
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Q1. What is Persistent volume
Ans. 
Persistent volume is a storage volume that exists beyond the life cycle of a container.
• Persistent volumes are used to store data that needs to persist even if the container is deleted or recreated.

• They are decoupled from the container and can be attached to different containers.

• Examples include network-attached storage (NAS), cloud storage, and local storage.

• Persistent volumes are managed by the storage administrator r
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Q2. Volumein kubernetes which can be attached and deattached
Ans. 
PersistentVolumes (PVs) in Kubernetes can be attached and detached.
• PersistentVolumes (PVs) can be attached to pods using PersistentVolumeClaims (PVCs).

• PVs can be detached from pods when no longer needed.

• Examples of PV types include NFS, iSCSI, and AWS EBS.
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Q1. Question on cloud and kubernetes
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Q1. Nothing much just basic hr question
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Q1. What happens when you search "google.com"?
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When you search 'google.com', it will redirect you to the Google homepage.
• Typing 'google.com' in the browser's address bar will take you to the Google search engine homepage.

• You can also directly search for 'google.com' in the Google search bar to access the Google homepage.

• Google.com is the domain name for the Google search engine.

• Google.com may also redirect to localized versions of Google based on the user's locatio
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Q2. Traceroute in Linux
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traceroute is a command-line tool used to trace the route that packets take from your computer to a destination server.
• traceroute command is used to track the path that packets take to reach a destination server

• It shows the IP addresses of the routers that the packets pass through

• It also displays the round-trip time for each hop

• Example: traceroute google.com
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Q1. Had like 5 more rounds all around leadership principles. Also multiple Linux questions.
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Q1. K8$ network questions
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Q1. Depending on project
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Q1. Depending on experience and project
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Q1. About salary negotiation
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