What is a key benefit of using the Deep Security Virtual Appliance for virtual machine protection?

Using the Deep Security Virtual Appliance for virtual machine protection offers the key benefit of providing automatic protection for ESXi hosts. This means that the appliance can be seamlessly deployed within a virtual environment, automatically extending its security capabilities to the virtual machines running on the ESXi hosts. As a result, the appliance simplifies the management of security by ensuring that all relevant virtual machines are protected without requiring individual configuration for each one.

This automatic protection feature reduces administrative overhead, as security policies and updates can be managed centrally. It ensures that any new virtual machines added to the environment are automatically included under the protective measures provided by Deep Security, thereby enhancing the overall security posture without requiring extensive manual intervention.

The other choices do not align as closely with the core benefits of the Deep Security Virtual Appliance. For example, requiring manual updates for each VM would lead to increased complexity and potential vulnerability in the environment. Exclusive use of host resources would limit the overall efficiency and may not take full advantage of available resources for security functions. Direct installation on guest operating systems is not a primary function of the virtual appliance, which is designed to operate at the hypervisor level rather than within each individual VM.