VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

Fibre Channel over Ethernet (FCoE) is a protocol that allows Fibre Channel communications to run over Ethernet networks. This is significant in converging storage and data networking, allowing organizations to simplify their infrastructure and reduce costs.

One of the critical requirements for FCoE is that the network switch must support Priority-based Flow Control (PFC). This protocol is essential because FCoE traffic can be sensitive to congestion and requires lossless transmission to maintain the integrity of storage traffic. By enabling PFC, the switch can manage flow control by allowing bandwidth to be reserved for FCoE, ensuring that storage data is transmitted without loss, particularly during periods of high traffic on the network.

The other options present scenarios that are not accurate in the context of FCoE operation. For instance, FCoE ports can actually be configured across multiple virtual switches if properly managed, and moving an FCoE card does not typically require a reboot of the ESXi host, as changes can often be made online, depending on the specific hardware and configuration.