Jio Devops Engineer Interview Questions and Answers

A pipeline is a series of automated steps that allow for the continuous integration and delivery of software.

• A pipeline typically includes stages such as building, testing, and deploying code.

• Tools like Jenkins, GitLab CI/CD, and AWS CodePipeline are commonly used for creating pipelines.

• Pipelines help in automating the software development process and ensuring faster delivery of updates.

• Provisioner in Terraform is a tool used to set up and configure resources in cloud environ...read more

SSH (Secure Shell) is a network protocol used for secure communication between a client and a server.

• SSH uses port number 22 by default for communication.

• The SSH process involves authentication, encryption, and data exchange between the client and server.

• SSH logs can be used for auditing and troubleshooting purposes.

• DNS (Domain Name System) is not directly related to SSH but can be used to resolve hostnames to IP addresses for SSH connections.

DHCP process involves four steps - Discover, Offer, Request, Acknowledge. DORA process is the sequence of these steps.

• DHCP Discover - Client broadcasts a request for IP address

• DHCP Offer - Server responds with an available IP address

• DHCP Request - Client requests the offered IP address

• DHCP Acknowledge - Server confirms the IP address assignment

Spark is a distributed computing framework, RDD stands for Resilient Distributed Dataset, and DF stands for DataFrames.

• Spark is a fast and general-purpose cluster computing system.

• RDD (Resilient Distributed Dataset) is a fault-tolerant collection of elements that can be operated on in parallel.

• DataFrames (DF) are distributed collections of data organized into named columns, similar to tables in a relational database.

• Spark SQL can be used to query DataFrames using SQL syntax.

Configuration of NFS server involves setting up exports, permissions, and client access.

• Install NFS server package (e.g. nfs-kernel-server)

• Edit /etc/exports file to define shared directories and permissions

• Restart NFS server service after making changes (e.g. systemctl restart nfs-server)

• Set up firewall rules to allow NFS traffic if necessary