A bottleneck is a situation that occurs when network servers and components are unable to meet demand. The bottleneck is the particular network component or server subsystem that is causing the problem.
For example, if users on a Microsoft Windows NT or Windows 2000–based network are complaining that it takes too long to log on in the morning, the bottleneck and its potential resolution might be
The primary tool for analyzing and resolving network bottlenecks is the Windows NT administrative tool Performance Monitor (or the Performance snap-in tool for Windows 2000). To learn about how to identify and correct bottlenecks using Performance Monitor, consider taking the Microsoft Official Curriculum (MOC) course MS 689, «Supporting Microsoft Windows NT Server 4.0 - Enterprise Technologies».