Final answer:
The two true statements about PCIe are that it supports native hot-swap functionality and a link with four lanes is called an x4 link. Options B and D are incorrect and C describes a different type of technology.
Step-by-step explanation:
The two correct statements about PCIe (Peripheral Component Interconnect Express) are:
- The PCIe supports native hot-swap functionality. This allows devices to be added or removed without having to shut down the computer.
- A link that is composed of four lanes is called an x4 link. Each lane consists of two pairs of wires, one for sending and one for receiving data.
Regarding the other options: You generally cannot install a PCI Express x16 adapter into an x4 slot due to size restrictions, although some slots and adapters are designed to be physically compatible for a smaller number of lanes. The PCIe standard is not a bus-based system, but rather a point-to-point access serial system. Finally, the PCIe 4.0 standard actually doubles the transfer rate compared to PCIe 3.0, not 5.0.