Virtual machines

Question 1

What is a virtual machine

Answer 1

A virtual machine is a software copy of a computer.

Question 2

What are the benefits of running an OS on a VM

Answer 2

Run older applications
Run multiple OS on same computer
VMs are Very easy to back up
Shield from malware 
Can create virtual servers

Question 3

What are the disadvantages of running an OS on a VM

Answer 3

Programs will run less efficiently

You still need a proper license to run a OS on a VM

Question 4

What is bytecode

Answer 4

bytecode is intermediate code designed for a VM

Question 5

What are the advantages of bytecode

Answer 5

Programmers do not have to rewrite code for each possible OS
Code can run on any platform
no need to change source code