What function does the Attachment Unit Interface (AUI) serve?

The Attachment Unit Interface (AUI) plays a crucial role in network communication by serving as a standardized connection point that links a computer or device to a network transceiver. Its primary function is to facilitate the connection of devices—such as network interface cards (NICs)—to the physical network segment, allowing them to communicate over the network. By defining a standardized connector and communication protocol, the AUI allows devices to convey data effectively to and from various network types, including Ethernet.

Understanding the context of the other options can help clarify the significance of AUI's function. For instance, it does not specifically connect multiple servers or provide power to devices—those functions are usually performed by networking hardware like switches and power-over-Ethernet technology, respectively. Additionally, encryption of data packets is not a function associated with AUI; instead, encryption is a higher-level network security measure typically performed at the application or transport layer of the OSI model, rather than at the physical connection level.

Thus, recognizing that the AUI's primary role is to connect devices to the network highlights its importance in ensuring stable and effective communication within various networking environments.