The basic building blocks of a computer network include nodes, links, and network devices. Nodes represent any device connected to the network, such as computers, servers, or printers. Links are the connections between these nodes, which can be wired (like Ethernet cables) or wireless (such as Wi-Fi). Network devices, including routers, switches, and access points, facilitate communication and data transfer among nodes. Together, these components allow for reliable data exchange and resource sharing, forming the foundation of interconnected networks.