Data Center Networks (DCNs) are evolving towards All-Ethernet architecturesdue to various IT changes.
Key IT changes driving All-Ethernet DCNs include:
A (HDD to SSD transition)# Increases storage speed, reducing network latency.
B (Centralized to Distributed IT architecture)# Improves efficiency and scalability.
D (Enterprise Service migration to Cloud)# Requires a more flexible, high-bandwidth network.
C (PCIe replacement) is incorrect because PCIe is not replaced but rather evolves to newer versions (e.g., PCIe Gen5/Gen6) to support high-speed connections inside servers.
#Reference:HCSA-Presales-IP Network Official Documentation - Data Center Evolution and All-Ethernet Trends