What is a characteristic of a virtual machine on a PC?

What is a characteristic of a virtual machine on a PC?

• A virtual machine needs a physical network adapter to connect to the Internet.
• A virtual machine is not susceptible to threats and malicious attacks.
• A virtual machine runs its own operating system.
• The number of virtual machines that can be made available depends on the software resources of the host machine.
  

  Answers Explanation & Hints: Each virtual machine runs its own operating system. The number of virtual machines that can be made available depends on the hardware resources of the host machine. Virtual machines are susceptible to threats and malicious attacks, like physical computers. To connect to the Internet, a virtual machine uses a virtual network adapter, that acts like a physical adapter in a physical computer, connecting through the physical adapter on the host to establish a connection to the Internet.