CompTIA Cloud+ Practice Test

In a virtual machine, which component represents an Ethernet adapter?

1. A. Virtual HBA

2. B. Virtual NIC

3. C. Virtual switch

4. D. Virtual router

The correct answer is: B. Virtual NIC

The component that represents an Ethernet adapter in a virtual machine is the Virtual NIC (Network Interface Card). A Virtual NIC serves the same purpose as a physical NIC in a traditional networking environment, allowing the virtual machine to communicate with other machines and the outside network. It facilitates data transmission over the virtualized layer, enabling the VM to send and receive network traffic just like a physical server would with its NIC. In contrast, the Virtual HBA (Host Bus Adapter) is typically associated with storage access rather than network connectivity, which distinguishes it from the role of a NIC. The Virtual switch acts as a bridge that connects multiple Virtual NICs, directing traffic among them and to the external network, but it does not represent an Ethernet adapter itself. Similarly, a Virtual router deals with routing data between different network segments and is not specific to network interface functionality within a single VM. The Virtual NIC is essential for establishing network connectivity for virtual machines, making it the correct choice in this context.