A storage administrator notices that a server is intermittently losing access to its storage over a single path. Which of the following statistics on an FC switch would have a high count value in this

Core PID refers to the Process ID in a system's kernel and is unrelated to FC switch port statistics for signal integrity or link issues.

Rx error count (Receive error count) indicates errors in the received frames (e.g., CRC errors, invalid frames) but does not specifically point to a complete loss of the physical signal itself.

dB levels (decibel levels) measure optical signal strength. While low dB levels could cause a loss of signal, the 'Loss of Signal' counter itself is the direct indicator that the signal has dropped below the receiver's threshold.

A 'Loss of Signal' (LOS) on an FC switch port means that the switch is not receiving a valid optical signal from the connected device. Intermittent LOS counts would directly indicate a physical layer issue, such as a faulty cable, SFP, or HBA, leading to intermittent storage access loss.