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…
Question
Which of the following cable types uses a 9-pin connector?
Options
- AParallel
- BEthernet
- CUSB
- DSerial
How the community answered
(36 responses)- B3% (1)
- C6% (2)
- D92% (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.
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