Which tool is commonly used for network performance monitoring?

A Network Analyzer is widely recognized as a tool for network performance monitoring due to its capability to capture and analyze data packets traversing the network. This allows network administrators to review traffic patterns, identify bottlenecks, and detect unusual activity or performance issues. The detailed insights provided by a network analyzer help in troubleshooting performance problems, ensuring optimal network functionality, and enhancing overall network reliability.

In contrast, tools like Traffic Shapers and Bandwidth Limiters primarily focus on managing and controlling traffic rather than monitoring performance. While they can play a role in improving performance indirectly by managing bandwidth, they do not provide the analytical insights that a network analyzer does. A Protocol Spoofer is typically used for testing or security purposes and does not pertain to performance monitoring directly, making it less relevant for this context. Thus, the network analyzer stands out as the primary choice for comprehensive performance monitoring in a network environment.