The correct answer is D. Software and hardware tightly coupled.
Virtualization is the process of creating a virtual version of a physical computer system. A virtual machine (VM) is a software program that behaves like a physical computer, with its own CPU, memory, storage, and network interface. VMs can be used to run multiple operating systems on a single physical computer, or to create isolated environments for testing or development.
Virtualization can provide a number of benefits, including:
- Increased resource utilization: By running multiple operating systems on a single physical computer, virtualization can improve resource utilization.
- Improved flexibility: Virtualization makes it easy to create and destroy virtual machines, which can be useful for testing or development.
- Increased security: Virtualization can be used to create isolated environments for running untrusted applications.
However, virtualization also has some drawbacks, including:
- Increased complexity: Virtualization can add complexity to a computing environment.
- Performance overhead: Virtualization can introduce some performance overhead, although this is typically minimal.
- Security risks: Virtualization can introduce new security risks, such as the risk of VM escape.
In conclusion, virtualization is a powerful tool that can provide a number of benefits. However, it is important to be aware of the potential drawbacks before implementing virtualization in your environment.
Here is a brief explanation of each option:
- A. Virtual machines can be provisioned to any system: This is true. Virtual machines can be provisioned to any system that has the necessary hardware and software.
- B. Hardware-independence of operating system and applications: This is also true. Virtual machines can run on any type of hardware, and they are not tied to a specific operating system or application.
- C. Can manage OS and application as a single unit by encapsulating them into virtual machines: This is also true. Virtual machines can be used to manage operating systems and applications as a single unit.
- D. Software and hardware tightly coupled: This is not true. Virtualization decouples software and hardware, which allows for greater flexibility and portability.