CompTIA
220-801 · Question #633
220-801 Question #633: Real Exam Question with Answer & Explanation
The correct answer is B: PCI modem. A PCI modem is the adapter card designed to connect a PC to a POTS (Plain Old Telephone Service) line for dial-up data transmission. It modulates and demodulates analog signals over the telephone network.
Question
Which of the following adapter cards allows I/O devices to be connected and transmits data using a POTS line?
Options
- APCI tuner card
- BPCI modem
- CPCI SCSI
- DPCI Ethernet
Explanation
A PCI modem is the adapter card designed to connect a PC to a POTS (Plain Old Telephone Service) line for dial-up data transmission. It modulates and demodulates analog signals over the telephone network.
Common mistakes.
- A. A PCI tuner card receives RF signals for TV or radio reception and has no interface for a POTS telephone line.
- C. A PCI SCSI card provides a host interface for attaching SCSI storage devices such as hard drives and tape drives, not telephone lines.
- D. A PCI Ethernet card connects a PC to a LAN using an RJ-45 connector and operates over twisted-pair or fiber cable, not a POTS telephone line.
Concept tested. PCI modem function and POTS connectivity
Reference. https://learn.microsoft.com/en-us/windows-hardware/drivers/network/ndis-support-for-modems
Community Discussion
No community discussion yet for this question.