What does Access Unit (AU) provide in a network?

Access Units (AU) play a vital role in facilitating communication and resource management within a network. When considering what an Access Unit provides, it is crucial to understand its primary function in the context of networking.

The correct understanding centers around the idea that Access Units serve as intermediaries that grant access to various network resources. In this case, Answer B highlights that Access Units provide access to resources like fax and teletax. This reflects their capability to connect users to different communication services and resources within the network, ensuring that devices can transmit and receive necessary information efficiently.

Access Units often handle various communication tasks, which can include managing the connections to different services, like fax machines and teletax systems. By allocating resources effectively, Access Units help streamline operations in a networked environment, allowing users to utilize these resources seamlessly.

While the other options mention important aspects related to networking, such as connectivity, monitoring, or security, they do not accurately describe the specific function associated with Access Units as effectively as the provision of access to resources does. This understanding emphasizes the critical role Access Units play in resource accessibility within a network.