Which interface standard is designed for high-speed serial bus communications?

• A. USB
• B. Firewire
• C. Ethernet
• D. PCIe

Answer: (B)

High-speed serial bus communications refer to transferring data quickly over a serial link in a way that multiple devices can be connected in a bus-like manner. FireWire was designed specifically as a high-speed serial bus, enabling fast data transfer between peripherals and supporting daisy-chaining and streaming capabilities, which makes it a classic example of a high-speed serial bus.

While PCIe is also a high-speed serial interconnect, it is a point-to-point link rather than a shared bus in the traditional sense. Ethernet is for networking, not a general-purpose peripheral bus, and USB is host-centric with hubs, not a true bus designed for multi-device serial data sharing in the same way FireWire was.