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CompTIA

220-801 · Question #658

Which of the following cable types uses a 9-pin connector?

The correct answer is D. Serial. Serial (RS-232) cables use a DB-9 connector with 9 pins, commonly found on older PCs for connecting devices like modems, mice, and industrial equipment. Parallel cables use a DB-25 (25-pin) connector. Ethernet uses an RJ-45 connector (8 contacts). USB has its own proprietary…

Hardware

Question

Which of the following cable types uses a 9-pin connector?

Options

  • AParallel
  • BEthernet
  • CUSB
  • DSerial

How the community answered

(36 responses)
  • B
    3% (1)
  • C
    6% (2)
  • D
    92% (33)

Explanation

Serial (RS-232) cables use a DB-9 connector with 9 pins, commonly found on older PCs for connecting devices like modems, mice, and industrial equipment. Parallel cables use a DB-25 (25-pin) connector. Ethernet uses an RJ-45 connector (8 contacts). USB has its own proprietary connectors (Type-A, Type-B, Mini, Micro, Type-C) with varying pin counts, none of which are 9-pin DB-style connectors.

Topics

#serial cable#DB-9 connector#connector types

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