A network engineer is tasked with upgrading the data center's fiber optic infrastructure to support increased data traffic and improve overall network reliability. The current setup has experienced issues with signal loss and interference, particularly over longer distances within the data center.

The engineer evaluates the existing fiber optic patch cords and considers replacing them with a type that offers better performance in terms of reducing back reflection and signal degradation.

Which type of fiber optic patch cord finishing should the engineer select to address these issues effectively?

###answer###

Non$-$Polished Contact $($NPC$)$ finishing

UltraPhysical Contact $($UPC$)$ finishing

Angled Physical Contact $($APC$)$ finishing

Physical Contact $($PC$)$ finishing