CompTIA A+ Core 1 (220-1201) Practice Exam 2026 - Free A+ Certification Practice Questions and Study Guide

The correct choice of PCI corresponds to a maximum bus speed of 133 Mbps. PCI, or Peripheral Component Interconnect, was a widely used standard for connecting peripherals to a computer's motherboard. The original specification of PCI supported a maximum bandwidth of 133 Mbps, which was sufficient for connecting devices such as network cards, sound cards, and other peripherals during its prime usage period.

PCI offered a parallel architecture, where multiple devices could communicate over the same data bus simultaneously, although it did have limitations regarding the total number of devices that could be connected. Although newer standards have emerged since the PCI specification, understanding its speed and bandwidth is vital in recognizing the historical context of computer hardware evolution.

In contrast, other options represent different technologies with varying characteristics. PCI-X, while related, is an enhanced version of PCI with higher speeds capable of reaching up to 1.06 Gbps. AGP (Accelerated Graphics Port) was designed specifically for graphics cards and operated at different speeds, typically much faster than PCI. ISA (Industry Standard Architecture) is an older bus standard that operates at much lower speeds, typically around 8 Mbps to 33 Mbps depending on the specific ISA version used.

Recognizing the specifications and uses of these different bus technologies highlights PCI