What does a network consist of?

A network consists of a group of two or more linked computer systems. This definition captures the fundamental concept of networking, which is based on the interconnection of multiple devices for the purpose of sharing resources such as data, files, printers, and internet access. In a network environment, computers can communicate with each other directly or through intermediary devices like switches and routers.

When devices are grouped in this way, they can leverage shared resources and collaborate effectively, which is essential for both personal and professional environments. Understanding that a network forms through connections among multiple systems is key to grasping basic networking concepts and principles.

Other choices do not accurately reflect what constitutes a network. A single computer connected to the internet doesn’t meet the requirement of multiple systems being interconnected. Limiting the definition of a network to only wireless devices disregards the fact that many networks also include wired devices. Finally, the option indicating none of the above does not apply since we do have a valid definition in the correct answer.