SK0-004 · Question #273
Which of the following expansion slots is 64-bit?
The correct answer is D. PCIe. PCIe (PCI Express) is the 64-bit expansion interface that replaced older parallel bus standards and is the current high-performance slot.
Question
Which of the following expansion slots is 64-bit?
Options
- APCIx
- BPCI
- CISA
- DPCIe
How the community answered
(43 responses)- A2% (1)
- B5% (2)
- C5% (2)
- D88% (38)
Why each option
PCIe (PCI Express) is the 64-bit expansion interface that replaced older parallel bus standards and is the current high-performance slot.
PCI-X is a 64-bit parallel extension of PCI used in legacy servers, but it is an older predecessor that has been replaced by PCIe as the current 64-bit standard.
Standard PCI is a 32-bit parallel bus and does not natively support 64-bit data paths.
ISA is a 16-bit legacy bus and was never extended to 64-bit operation.
PCIe supports 64-bit addressing and data path operation, enabling it to address the large memory spaces required by modern expansion hardware. It uses a high-speed serial lane architecture that provides significantly greater bandwidth than older parallel buses. As the current industry standard, PCIe is the 64-bit slot that CompTIA identifies as the modern replacement for legacy interfaces.
Concept tested: PCIe as current 64-bit expansion slot standard
Source: https://pcisig.com/specifications/pciexpress
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