A backbone network is the core of a computer network, connecting smaller networks and devices. It provides fast and reliable data transmission.

Functions of a backbone network include:

Connecting networks within an organization or across locations.
Routing and switching data packets efficiently.
Managing bandwidth allocation and prioritizing traffic.
Ensuring redundancy and fault tolerance for high availability.
Implementing security measures to protect data and resources.
Allowing for scalability to accommodate network growth.
In summary, a backbone network is vital for high-performance, reliable, and scalable computer networks.