1.What is EPEL and Write a instructions to install and use it?
EPEL(Extra Package for Enterprise Linux) is a special interest group that provides some additional packages for Redhat family like Ubuntu,CentoOS etc.
Method to install EPEL on CentOs
Connect to the server via SSH as the root user
install EPEL repository by using command,
yum install epel-release -y
after refresh it then command,
yum repolist
then install the package by using command
yum install pkg
2.What is diffrence between hypervisor and cloud?
A hypervisor, also known as a virtual machine monitor, is software that creates and runs virtual machines (VMs). A hypervisor allows one host computer to support multiple guest VMs by virtually sharing its resources, such as memory and processing.
Cloud is a model for delivering computing resources, such as servers, storage, and networking, over the internet.
Cloud providers, such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud offer a variety of services that allow users to rent computing resources on demand, without the need to purchase and maintain physical hardware.
The main difference between hypervisors and cloud is the level of control on the hardware.
IN the hypervisor users have control on the hardware on which their VMs are running, and they can install and configure the hypervisor and VMs as they see want.
But in the cloud users do not have direct control on the physical hardware.
3.What are the Network Adaptor(Driver) you have in VirtualBox and write a usecase of it?
In the virtualbox there are some options available to connect with the virtual machine.
A. NAT- This allows the VM to connect with the internet
B. Bridged- The Bridged allows the VM to connect directly to the host machine's network.This is also useful for the accessible VM from the other networks and also to communicate with the other device on the same network.
C.Host-only- The Host-only allows the VM to communicate with the host machine or other VMs on same host only networks only. it doesn't allow to communicate with the VMs who has another internet access. This adapter is useful for creating a private network between VMs and the host machine.
D.Interna- The Internal allows the VM to communicate with other VMs on the same host machine but it does not provide internet access to communication with other devices on the host machine's network.
E.Generic- The Generic allows the VM to use a filter to connect with the network. This adapter is useful for advanced network configurations for connecting to networks that are not supported by the other adapter types.
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