To improve the efficiency of a network with three physical interfaces for three subnets, what is a recommended approach?

Using a single link to carry all three subnets can significantly improve network efficiency by consolidating the resources, reducing complexity, and optimizing bandwidth usage. This approach employs technologies such as VLANs (Virtual Local Area Networks) to logically segment traffic without the need for additional physical interfaces. By utilizing one high-capacity link rather than multiple individual ones, it minimizes duplication of physical infrastructure, reduces costs associated with cabling and maintenance, and simplifies network management.

Implementing such a solution also allows for better utilization of available bandwidth and can lead to improved performance due to reduced overhead from having multiple interfaces. This can be particularly beneficial in scenarios where traffic patterns fluctuate or when there is a need to accommodate more devices efficiently within the same network infrastructure.