The invisibility exhibited in vps web hosting like two neighbors not seeing each other

The virtualized private servers although are using the same hardware and are located on the same large physical server they maintain their complete invisibility to each other. Such vps web hosting  is not sharing the processes also. 
 
Moreover in case one of the vps of the main server has some errors or faults exhibited the rest of the servers function absolutely in normal way and each vps is having its individual IP address and the network stack allocated to it.The vps is getting its own root access enabling independent operation of the applications as well as ability to completely manage the vps in great similarity to dedicated server.
 
The vps also gets guaranteed memory, bandwidth of the CPU, disk space as well as the uptime. There is increase in the security in contrast to shared hosting and very similar to dedicated hosting.
 
The necessity of vps becomes evident when the client is looking for independent control of the server to use its own applications and get enhanced security, because there are many kinds of unwarranted risks in shared hosting of which the client needs the protection.