Refer to the exhibit. FCoE is used in the topology between the SAN Storage devices and SAN- Core routers. After noticing traffic drops to hosts accessing SAN-B storage, the engineering team wants to r

Increasing the bandwidth between SAN-A and SAN-B storage devices and the SAN-Core devices directly addresses the potential bottleneck where FCoE traffic from storage enters the core network. If traffic drops are due to oversubscription at this point, adding more capacity will alleviate the congestion and reduce the oversubscription ratio, thereby preventing further drops.

Configuring QoS to prioritize SAN-A traffic would worsen the traffic drops for SAN-B, as it does not increase overall bandwidth but rather reallocates existing oversubscribed capacity.

Increasing bandwidth between SAN-Core and SAN-Edge devices might help with overall network capacity but does not directly address an oversubscription issue occurring closer to the storage devices, as implied by the specific problem with SAN-B storage.

Configuring QoS to prioritize SAN-B traffic would help SAN-B traffic but would not reduce the overall oversubscription ratio in the topology; it simply manages the symptoms by deprioritizing other traffic.