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5.4 - Coggle Diagram

- - - - type 1
        
        directly runs on the physical hardware of the host machine
      - type 2
        
        hosted on the OS on the host machine as a separate layer of software
  - - - when functions of hardware based network devices are converted into software and can run on commercial off the shelf (COTS) hardware
  - - - full virtualisation
      - paravirtual machine
      - OS level
    - - reduction in costs
      - reduction in number of physical servers
      - independant user environments
      - reduction in power consumption
- - - - sharing, aggregatiob, emulation, + isolation can all be managed from a central virtual server
    - - the creation of separate computing environments within the same host. used to reduce the number of active servers + limits power consumption
    - - a group of hosts are combined + presented to guests as a single virtual host. made possible through cluster management software
    - - Each virtual machine is kept isolated from its host physical system and other virtualized machines. Because of this isolation, if one virtual model crashes, the other virtual machines and the host system don't affect each other. In addition, data isn't shared between one virtual model and another.
    - - Virtualized applications can be run on different machines and operating systems with minimal compatibility issues. This portability is especially valuable in remote work scenarios, where users may need to access applications from various devices or locations.
    - - involves one system imitating another - eg system a runs windows but system b doesnt, we make system b emulate the working of system a