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Yet Another Virtualization Intro: Virtualization and Client Server Technology

Isolation implies the independence virtual machines afford. Virtual machines are completely isolated from hosts and other machines. This provides the security that if one machine crashes the rest of the machines will be unaffected. This isolation also ensures data control. Machines can only communicate through specifically configured network connections. Data cannot infiltrate or affect other machines or applications.

Encapsulation is similar to the abstraction and information hiding that characterizes virtualization. It is defined as the combination of elements to create a new entity. For example, OOP (Object-Oriented Programming) languages like C++ and Java use encapsulation to create high-level (abstracted) objects. In virtualization, an entire virtual machine and its contents are encapsulated so it can be saved as a single file. This makes it incredibly easy to copy and move. Encapsulation resonates with virtualization in its tendency towards hiding the details to make dealing with objects easier. This is accomplished by hiding complexity with a simple interface.
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