What is physical infrastructure and it's challenges

physical infrastructure:
Uses physical data centers for storing digital assests.
Challenges:
Infrastructure required
Investment on physical servers
Maintenance required

what is server, serverOS,client OS and its relation between them

Server:
System that provides services and data to the other computers.
server OS:
The OS operating on the server.
Client OS:
Operating system that operates within the desktop.

What is virtualisation and its advantages compared to physical infrastructure

Virtualization:
In computing creating virtual resources

Advantages:
1.Less Space
2.Less Investment
3.Less Maintenance

what is cloud computing and it's advantages

Practice of using remote computing resources over the internet for companies and for individuals.

Advantages:
1. No physical Infrastructure
2. No Initial investments
3. No Maintenance
4. Highly scalable

What is a hypervisor and its role in virtualization

Hypervisor is the special software used to create virtual machines.