Which of the following best defines a network?

The best definition of a network is "an interconnection of computers." This definition highlights the essential function of a network, which is to enable communication and data transfer between various devices that are typically computer systems. In a computer network, these interconnected systems can share resources, exchange information, and provide services to one another, which is vital for both local area networks (LANs) and wide area networks (WANs).

While it's true that a network can include other devices beyond just computers—such as printers, servers, and smartphones—focusing on the term "computers" underscores the foundational role they play within most networks. This emphasis on computers also aligns with traditional networking concepts, where the primary purpose of connecting devices is often to facilitate communication between computers.

In contrast, defining a network solely as "an interconnection of various devices" is broader and less specific, lacking the focus on computers that is central to understanding network architecture. The remaining options do not adequately describe a network's nature and function, as software applications and video games do not inherently involve physical or logical connections between devices to create a network environment.