220-801 Question #340: Real Exam Question with Answer & Explanation

The correct answer is C: Serial. The DB-9 (also called DE-9) is a 9-pin D-subminiature connector that is the standard connector for RS-232 serial communication ports (COM ports). It was commonly used on PCs for connecting modems, mice, and other serial devices. HDMI (A) uses its own proprietary 19-pin connector.

Question

DB-9 connectors are attached to which of the following cable types?

Options

AHDMI
BSCSI
CSerial
DParallel

Explanation

The DB-9 (also called DE-9) is a 9-pin D-subminiature connector that is the standard connector for RS-232 serial communication ports (COM ports). It was commonly used on PCs for connecting modems, mice, and other serial devices. HDMI (A) uses its own proprietary 19-pin connector. SCSI (B) uses a variety of connectors including 50-pin Centronics and 68-pin high-density D-sub connectors. Parallel ports (D) use the DB-25 (25-pin) connector or the 36-pin Centronics connector - not the 9-pin DB-9.

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