COMPTIA A+ Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What type of connector does a Serial Port use?

USB Type-C
HDMI
Port with DB9 9-pin connector
Thunderbolt

The correct answer is: Port with DB9 9-pin connector

A serial port typically uses a connector that is characterized by its DB9 9-pin configuration. The DB9 connector is a standard connector that was widely used for RS-232 serial communication, allowing for one-to-one connections for devices like modems, printers, and mouse devices. This type of connector is easily recognizable due to its distinctive D-shaped outline and the arrangement of the nine pins. USB Type-C, HDMI, and Thunderbolt connectors serve different purposes and are designed for different types of data transmission. USB Type-C is a modern universal connector used for various devices, while HDMI is designed specifically for high-definition video and audio signals. Thunderbolt connectors enable high-speed data transfer and daisy-chaining of devices, which are not related to the functionality of a traditional serial port. Therefore, the DB9 connector specifically aligns with the historical and functional characteristics of a serial port.