TestOut LabSim A+ Certification Practice Exam

Which functionalities are typically available through TRS ports on a sound card?

1. Headphones and MIDI

2. Speaker out and Microphone in

3. USB and Line out

4. Optical out and Digital in

The correct answer is: Speaker out and Microphone in

The TRS (Tip-Ring-Sleeve) ports on a sound card are commonly used for analog audio connections, which include both input and output functionalities. The functionalities typically available through TRS ports include speaker output and microphone input. Speaker out allows the sound card to send audio signals to external speakers or headphones, making it possible to listen to sound playback. Microphone in provides a means to capture audio input from a microphone, enabling users to record sound or communicate through applications like voice chats or music recording software. Other options mentioned include functionalities that are not standard to TRS ports. For instance, MIDI communications generally use different types of connectors, while USB connections are digital and also rely on different port types. Similarly, optical out and digital in pertain to digital audio formats and are not typically associated with TRS connectivity. Therefore, the accurate representation of TRS port functionalities focuses on the analog speaker output and microphone input capabilities.