What defines a computer network?

• A. A group of interconnected computers that share resources and data
• B. A single computer connected to the internet
• C. A type of software used for communication
• D. A hardware component that enhances performance

Answer: (A)

A computer network is defined by a group of interconnected computers that share resources and data. This definition highlights the essence of what a computer network is designed to do: facilitate communication and resource sharing among multiple devices. In a network, computers can exchange information, access shared files, and utilize shared devices such as printers and servers. This interconnected structure allows for collaboration and enhances productivity, as users can interact and share resources more efficiently than if they were functioning independently.

The other choices describe elements related to computing but do not capture the entire scope of what a computer network entails. A single computer connected to the internet represents an individual device's connection rather than a network, while communication software involves applications that assist in networking but does not define the network itself. A hardware component that enhances performance refers to physical devices that can improve a computer's abilities but does not encapsulate the interrelationship and resource-sharing among multiple computers that constitutes a network. Thus, the option that defines a computer network accurately emphasizes its collective nature and purpose in interconnecting devices.