We have following Network adaptorin Virtual Box 1.Not Attached-In this mode,VirtualBox reports to the guest that a network card is present,but there is no connection. 2.NAT(Network Address Translation)-It’s a way to map multiple local private addresses to a public one before transferring the information 3.NAT Network-It is type of internal network that allows outbound connections. 4.Bridge networking-A network bridge is a computer networking device that creates a single, aggregate network from multiple communication networks or network segments. This function is

Hypervisor-It is a software to run and manage no of virtual machines in the system It is image based. It relies on single peripheral device. The workload is stateful. Cost is very low as compared to cloud. Cloud-It is a methodology which is used to access resources over internet It is template based. It relies on multiple machines so it is helpful in disaster recovery. The workload is stateless. Cost is higher.

EPEL(Extra Package for Enterprise Linux) is a special intrest group from the Ferdora group that provides some additional packages for Redhat family i.e.Ubuntu,CentoOS etc. For access EPEL user should install EPEL repository yum install epel-release -y For refresh the epel repo yum repolist Install packages from epel repo yum install pkg1

DevSecOps stands for development,security and operations.Its an approach to automate the process and security for the the software throughout the entire lifecycle

The main difference between these two is DevOps team will reduce communication between development and operation team for faster application release whereas SRE team will get involved after deploying the application in production environment for system reliability,maintainence and for support related activities

1.Linux 2.Git and Github 3.Maven 4.Jenkins 5.Docker 6.Kubernetes 7.Ansible 8.Terraform 9.Junit,Selenium 10.Nagios

Its just automates the automation process with the help of Jenkins,docker,ansible etc.

1.What is Devops? Devops is not just tool or a service,its a culture that is overtaking the business world.