Which is an example of a Host Channel Adapter?

An example of a Host Channel Adapter is best represented by a device designed to facilitate high-speed data transmission between storage and servers, typically within a network. The correct choice is a card that uses the InfiniBand protocol, which provides a high-throughput, low-latency connection. InfiniBand cards are often utilized in high-performance computing environments for their efficiency in handling large data sets and their ability to support direct memory access (DMA) and multiple data streams concurrently.

While other options may include adapters or network-related components, they do not specifically serve the primary function of Host Channel Adapters, which is to connect computer systems and storage devices in a reliable and efficient manner, particularly in enterprise and data center environments. For instance, a PERC card, while related to storage management, is primarily an advanced RAID controller and not a stand-alone Host Channel Adapter. The GPGPU PCIe card focuses on graphical processing rather than data channel management, and an adapter that combines Ethernet and Fibre Channel functionalities serves as a network bridge but does not exemplify a dedicated Host Channel Adapter role as effectively as the InfiniBand PCI card.

Focusing on the primary purpose and functionality, the choice highlighting the InfiniBand PCI card accurately represents a Host Channel Adapter