Which of the following types of network cable would be BEST to attach to a high-performance server?

Twisted pair copper cable is limited in maximum throughput and distance compared to fiber and is susceptible to EMI and crosstalk in high-density environments.

Coaxial cable is an older technology used primarily in legacy networks and cable infrastructure and is not suitable for high-performance server connectivity.

Fiber optic cable supports multi-gigabit to terabit speeds over long distances and is completely immune to electromagnetic interference (EMI), which is critical in data center environments with dense electrical equipment. Unlike copper-based cables, fiber has no signal degradation from crosstalk or RF noise, ensuring consistent high-throughput performance for server workloads. It is the standard choice for high-performance server uplinks and backbone connections.

A crossover cable is simply a twisted pair cable with a reversed pinout used for direct device-to-device connections - it is not a distinct cable type and does not offer higher performance than standard twisted pair.