What can cause network congestion in a data centre?

Network congestion in a data center typically occurs when the amount of data being transmitted through the network exceeds its capacity, leading to delays and reduced performance. One significant contributor to this phenomenon is the presence of too many simultaneous users. When numerous users access network resources at the same time, their collective demand for bandwidth can overwhelm the available capacity, resulting in congestion.

High levels of simultaneous traffic can lead to packet loss, increased latency, and even service degradation, which can impact the overall performance of applications hosted within the data center. This is particularly evident during peak usage times or in environments where bandwidth is limited, making it crucial for data center operators to manage user load effectively to maintain service quality.

While the other options may influence network performance, they typically do not directly cause congestion in the same way that a high number of active simultaneous users does.