A company wants to migrate a large amount of data from an on-premises server to...

When migrating large volumes of data to a cloud provider, CompTIA A+ notes that the transfer speed is dominated by the WAN (internet) connection speed. Among the given options, fiber-optic internet (C) provides the highest upload and download throughput, often delivering speeds from 1 Gbps to 10 Gbps or more, depending on the service. Fiber supports symmetrical upload speeds, which is critical because data migration requires heavy upstream bandwidth.

Coaxial (A) and DSL (B) offer much lower upstream speeds—often under 30 Mbps—making them too slow for large-scale cloud migration. A SAN (D) is a local storage network that operates within the data center; it does not provide a path to the cloud and cannot replace an internet connection.

Fiber’s extremely high capacity, low latency, and resistance to electromagnetic interference make it the best and most efficient option for cloud migration performance.