When you attempt to access a shared resource, the server will make sure your user account has been authorized to access the resource. Primarily used for network cable troubleshooting. Sends sonar-like pulses to look for breaks, shorts or crimps in cables. Can locate a break within a few feet of actual fault. Oscilloscope Measures amount of signal voltage per unit of time.
Displays crimps, shorts, opens, etc.
Network Monitor Examines packet types, errors and traffic to and from each computer on a network. Protocol Analyzer Look inside the packet to determine cause of problem. Contains built in Time-Domain Reflector. Gives insights to many problems including connection errors, bottlenecks, traffic problems, protocol problems, etc. Multiple Disk Sets Fault Tolerant Systems protect data by duplicating data or by placing data in different physical sources.