220-801 · Question #5
Which of the following expansion slots uses a serial connection?
The correct answer is C. PCIe. PCIe (PCI Express) uses a serial, point-to-point connection architecture. Unlike its predecessors - PCI and PCI-X, which use a parallel shared bus - PCIe sends data one bit at a time over dedicated lanes (x1, x4, x8, x16). Serial connections allow for much higher clock speeds…
Question
Which of the following expansion slots uses a serial connection?
Options
- APCI
- BPCI-X
- CPCIe
- DAGP
How the community answered
(14 responses)- B7% (1)
- C93% (13)
Explanation
PCIe (PCI Express) uses a serial, point-to-point connection architecture. Unlike its predecessors - PCI and PCI-X, which use a parallel shared bus - PCIe sends data one bit at a time over dedicated lanes (x1, x4, x8, x16). Serial connections allow for much higher clock speeds and scalability. AGP also used a parallel connection. PCIe's serial design is why it dramatically outperforms older parallel standards and remains the dominant expansion slot technology today.
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