TestOut LabSim A+ Certification Practice Exam

What is one of the main functions of the RGB coaxial cable?

1. Transmit digital audio signals

2. Connect broadband modems

3. Transmit high-quality video signals

4. Connect computers to monitors

The correct answer is: Transmit high-quality video signals

The primary function of the RGB coaxial cable is to transmit high-quality video signals. This type of cable is specifically designed to carry separate color signals (red, green, and blue), which can enhance the visual quality of the video being transmitted. By using separate channels for each primary color, the RGB coaxial cable allows for better color accuracy and a more vibrant image, which is crucial for applications that require high-definition video transmission, such as gaming and professional video production. While other options involve various forms of signal transmission, they do not align with the capabilities of an RGB coaxial cable. For instance, digital audio signals typically rely on different types of cables, such as optical or HDMI cables, which are more suited for audio transfer. Similarly, connecting broadband modems and computers to monitors generally involves other types of connections that are optimized for those specific purposes, like Ethernet cables for modems and HDMI or DisplayPort cables for monitors.