The easiest way to test shield integrity is with a DC continuity test. Put a voltage on the cable at the near end, and if it shows up at the far end, it is assumed to be connected properly. While that is true for the conductors in the cable, it’s not necessarily true for the shield. That’s because the shield is connected to the exterior of the connector, and the connector is in physical contact with the rack panel.
Sourced through Scoop.it from: www.flukenetworks.com