What is the primary purpose of network redundancy?

The primary purpose of network redundancy is to ensure that if one path fails, there is an alternative path for data to travel. This concept is critical in maintaining a reliable and resilient network infrastructure. By implementing redundancy, networks can provide continuous service, as the failure of one component, link, or device does not lead to downtime or loss of connectivity. This is particularly important in environments where availability is crucial, such as data centers or enterprise networks that support critical applications.

Network redundancy can be achieved through various means, such as redundant links, multiple devices, or even entire redundant paths. When one link goes down, the traffic is automatically redirected through a backup link or route, ensuring that data flow remains uninterrupted. This enhances the overall reliability and robustness of the network.

In contrast, other choices do not accurately represent the main goal of redundancy. While reducing network costs, increasing data transmission speed, and limiting access to authorized users are important aspects of network design, they are not the primary focus of redundancy strategies.