Legacy Server Components with 16-bit Bus

C.

The correct answer is C. ISA (Industry Standard Architecture).

Explanation: Industry Standard Architecture (ISA) is a legacy bus architecture that was commonly used in early PC systems. It was first introduced in 1981 as an 8-bit bus and later extended to 16 bits in 1984. The 16-bit version of the ISA bus was designed to improve performance and allow for more devices to be connected to the system.

The PCI (Peripheral Component Interconnect) bus was introduced in the early 1990s and replaced the ISA bus as the primary expansion bus in PC systems. PCI is a 32-bit or 64-bit bus and provides higher bandwidth and more advanced features compared to ISA.

USB (Universal Serial Bus) is a serial bus used for connecting peripheral devices to a computer. USB has evolved over time, and the latest version (USB 4) provides a bandwidth of up to 40 Gbps.

AGP (Accelerated Graphics Port) was a specialized high-speed port used for connecting graphics cards to a computer. AGP was introduced in 1996 and was designed to provide a dedicated bus for graphics data. AGP was replaced by PCI Express in the mid-2000s.

In summary, the correct answer is C. ISA, which has a 16-bit bus, while the other options have different bus widths and are not related to the ISA bus architecture.