11:11 Systems Interview Questions, Process, and Tips

Q1. Explain the Architecture on current role
Ans. 
The architecture of my current role involves designing and implementing software solutions for clients.
• Designing and implementing software solutions for clients

• Working closely with clients to understand their needs and requirements

• Collaborating with cross-functional teams to ensure successful project delivery

• Utilizing various programming languages and technologies to build scalable and efficient solutions
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Q2. How to make the SAN disk online when it get failed error in cluster service
Ans. 
To make a SAN disk online after a failed error in cluster service, follow these steps:
• Identify the failed disk using the cluster management console

• Check the disk status and resolve any issues

• If the disk is still offline, try bringing it online manually

• If manual attempts fail, try restarting the cluster service

• If all else fails, replace the failed disk with a new one
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Q3. What is the reason for using CFS in hyper V
Ans. 
CFS is used in Hyper-V to improve virtual machine performance by reducing CPU overhead.
• CFS stands for Completely Fair Scheduler.

• It is a Linux kernel feature that helps distribute CPU resources fairly among processes.

• When used in Hyper-V, CFS can help reduce CPU overhead and improve virtual machine performance.

• CFS can also help prevent CPU resource starvation and improve overall system stability.

• CFS is enabled by defaul...read more
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Coding test on java collections

Q1. Sorting a given array
Ans. 
Sorting a given array of strings
• Use a sorting algorithm like quicksort or mergesort

• Consider the length of the strings for comparison

• Use a comparator function to define the sorting order
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Q2. Database queries. Finding second, thrid highest salary
Ans. 
Use SQL query with ORDER BY and LIMIT to find second, third highest salary
• Use ORDER BY salary DESC to sort salaries in descending order

• Use LIMIT 1,1 to get the second highest salary

• Use LIMIT 2,1 to get the third highest salary

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 1,1

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 2,1
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Q1. Why do you want to change jobs
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Q2. Salary negotiations
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Q1. Thorough with agile and waterfall methodologies
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Q1. Discussion on project management real life scenarios
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Q1. General discussion on expectations
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Q1. What are Terraform life cycles ? and how do we use them ?
Ans. 
Terraform life cycles are a set of stages that define how resources are created, updated, and destroyed.
• Terraform life cycles include create, read, update, and delete (CRUD) operations.

• They are defined in the provider's resource configuration.

• They can be used to control the order in which resources are created or updated.

• Examples of life cycle hooks include pre-create, post-update, and pre-delete.

• They can be used to pe...read more
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Q2. What are TF provisioners ? Describe their use cases
Ans. 
TF provisioners are used to execute scripts or commands on a resource after it is created.
• Provisioners are used to configure resources after they are created

• They can be used to install software, run scripts, or execute commands

• Provisioners can be local or remote, depending on where the script or command is executed

• Examples include installing packages on a newly created EC2 instance or running a script to configure a da...read more
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Q3. Azurecloud services that you worked on ? discuss their use cases in detail at your workplace ?
Ans. 
I have worked on Azure App Service, Azure Functions, and Azure DevOps.
• Azure App Service was used for hosting web applications and APIs.

• Azure Functions were used for serverless computing and event-driven scenarios.

• Azure DevOps was used for continuous integration and deployment.

• We used Azure DevOps to automate the deployment of our applications to Azure App Service and Azure Functions.

• We also used Azure DevOps for source...read more
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Q4. What is ingress in Kubernetes and how does it helps us while we deploy an application in AKS ?
Ans. 
Ingress is a Kubernetes resource that manages external access to services in a cluster.
• Ingress acts as a reverse proxy and routes traffic to the appropriate service based on the URL path or host.

• It allows for multiple services to share a single IP address and port.

• In AKS, we can use Ingress to expose our application to the internet or to other services within the cluster.

• We can configure Ingress rules to specify which ...read more
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Q1. Discuss architecture of K8s in detail ?
Ans. 
K8s is a container orchestration platform that automates deployment, scaling, and management of containerized applications.
• K8s architecture consists of a master node and worker nodes.

• Master node manages the cluster state and schedules workloads on worker nodes.

• Worker nodes run the containers and communicate with the master node.

• K8s uses etcd for storing cluster state and API server for communication.

• K8s also has variou...read more
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Q2. What is nodeaffinity and pod affinity in k8s?
Ans. 
Node affinity and pod affinity are Kubernetes features that allow you to control the scheduling of pods on nodes.
• Node affinity is used to schedule pods on specific nodes based on labels or other node attributes.

• Pod affinity is used to schedule pods on nodes that already have pods with specific labels or attributes.

• Both features can be used to improve performance, reduce network latency, or ensure high availability.

• Exam...read more
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Q3. Difference between pipeline variables and variable groups in Azure DevOps?
Ans. 
Pipeline variables are scoped to a single pipeline, while variable groups can be shared across multiple pipelines.
• Pipeline variables are defined within a pipeline and can be used in tasks within that pipeline

• Variable groups are defined at the project level and can be used across multiple pipelines

• Variable groups can be linked to Azure Key Vault for secure storage of sensitive information

• Pipeline variables can be overri...read more
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Q4. How to trigger a pipeline from specific version of Application code ?
Ans. 
Trigger pipeline from specific version of app code
• Use version control system to track code changes

• Configure pipeline to trigger on specific branch or tag

• Pass version number as parameter to pipeline

• Use scripting to automate version selection

• Integrate with CI/CD tools for seamless deployment
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Q5. What are stages involved in release pipeline ? Explain the code
Ans. 
Release pipeline involves stages for deploying code changes to production.
• Stages include build, test, deploy, and release.

• Code is built and tested in a development environment before being deployed to staging.

• Once tested in staging, code is released to production.

• Continuous integration and delivery tools automate the pipeline.

• Examples include Jenkins, GitLab CI/CD, and AWS CodePipeline.
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Q6. Any exposure to PCI / DSS compliance ?
Ans. 
Yes, I have exposure to PCI/DSS compliance.
• I have experience implementing security controls to meet PCI/DSS requirements.

• I have worked with teams to ensure compliance during audits.

• I am familiar with the 12 requirements of PCI/DSS and how to implement them.

• I have experience with tools such as vulnerability scanners and log management systems to ensure compliance.

• I have worked with payment gateways and understand the im
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Q7. Default inbound/outbound NSG rules when we deploy VM with NSG? Explain them
Ans. 
Default inbound/outbound NSG rules when we deploy VM with NSG
• By default, all inbound traffic is blocked except for traffic that is explicitly allowed by a rule

• By default, all outbound traffic is allowed

• Inbound rules are evaluated before outbound rules

• Default rules can be modified or deleted as per requirement
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Q8. Monitoring tool experience? explain the kind of monitors you might have set for monitoring infra?
Ans. 
I have experience with various monitoring tools and can set up monitors for infrastructure health, performance, and security.
• I have experience with tools like Nagios, Zabbix, and Prometheus.

• For infrastructure health, I set up monitors for CPU usage, memory usage, disk space, and network connectivity.

• For performance, I set up monitors for response time, throughput, and error rates.

• For security, I set up monitors for una...read more
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Q9. How do we test connectivity to our app in AKS from Azure Front Door?
Ans. 
Test connectivity to AKS app from Azure Front Door
• Create a test endpoint in AKS app

• Add the endpoint to Front Door backend pool

• Use Front Door probe feature to test endpoint connectivity

• Check Front Door health probes for successful connectivity
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Q10. How do we ensure high availability of VM and AKS worker nodes ?
Ans. 
Ensure high availability of VM and AKS worker nodes
• Use availability sets for VMs to distribute them across fault domains and update domains

• Use node pools in AKS to distribute worker nodes across multiple availability zones

• Implement auto-scaling to add or remove nodes based on demand

• Monitor node health and set up alerts for failures

• Regularly update and patch nodes to ensure security and stability
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