Which of the following is a major weakness of traditional networks that SD-WAN addresses?

The major weakness of traditional networks that SD-WAN addresses is reduced application latency. Traditional WAN architectures often rely on dedicated MPLS circuits, which can lead to inefficiencies in routing and increased application latency, especially as network demands grow and traffic patterns become more complex. SD-WAN technologies optimize the path that data takes across the network by utilizing multiple types of connections (such as MPLS, broadband, and LTE) and making real-time adjustments based on traffic conditions and application requirements. This dynamic routing allows for reduced latency, ensuring that critical applications receive the necessary bandwidth and low-latency paths.

While other options might seem relevant, they do not highlight the primary focus of SD-WAN in relation to application performance specifically. For example, while increased network latency and downtime are concerns that can impact overall performance, SD-WAN primarily aims to enhance the responsiveness and efficiency of application delivery through intelligent traffic management. Reduction in application visibility, on the other hand, is not a strength of SD-WAN but rather a challenge that must be managed to ensure that the benefits of the technology can be fully realized.