What is an essential characteristic of a Client/Server network?

A fundamental characteristic of a Client/Server network is that it employs a host computer, known as a server, to control access to shared resources. This architecture centralizes resource management, enabling the server to provide services, manage data, and handle requests from multiple client devices. By doing so, the server acts as a centralized point that simplifies the administration of resources, enhances security, and improves data consistency.

This model contrasts with peer-to-peer networks, where each device operates independently and can share resources directly without relying on a central server. In Client/Server networks, the server's ability to manage resource access is crucial for ensuring efficient communication and providing security protocols that can authenticate users and control their activities on the network. Hence, the correct answer highlights the importance of the server's role in managing shared resources within this type of network structure.