Each virtual host is going to have one or more Virtual Network Interface Cards (NIC). These Virtual NICs are used to route traffic to each virtual host without sending network traffic to all hosts on a server. This is important because cloud providers typically place many customer's virtual servers on the same physical server (Resource Pooling).
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What exactly is a Virtual NIC and how does it function within a virtual environment?
How do Virtual NICs contribute to network security in a virtualized environment?
In what scenarios is the use of Virtual NICs particularly beneficial for cloud providers?