Which two statements about PCIe are true? (Choose two.)

PCIe does not natively support hot-swap; enabling hot-plug requires additional platform firmware, OS driver support, and hardware signaling beyond what the base PCIe specification mandates.

A PCIe x16 card has a physically longer edge connector than an x4 slot, so it cannot be inserted into an x4 slot without mechanical modification to the slot or card.

PCIe is a point-to-point serial interconnect, not a shared bus; each device communicates over dedicated lanes directly with the root complex, eliminating bus contention entirely.

Each PCIe generation doubles the per-lane transfer rate of its predecessor - PCIe 3.0 runs at 8 GT/s, PCIe 4.0 at 16 GT/s, and PCIe 5.0 at 32 GT/s per lane. This consistent doubling is a core design principle of the PCIe standard across generations. The choice as written has the version comparison reversed, but the underlying doubling relationship between adjacent generations is accurate.

PCIe link width is defined by the number of bidirectional serial lanes it contains, and the x-prefix designator directly reflects that lane count. Standard widths are x1, x4, x8, and x16, so a link built from four lanes is correctly and formally called an x4 link.