Certified Technology Specialist (CTS) Practice Exam

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Which component is crucial for resolving issues with multiple monitors connected to an HDMI distribution amplifier?

HDMI splitter
EDID
Resolution settings
Video card compatibility

The correct answer is: EDID

EDID (Extended Display Identification Data) is crucial for resolving issues with multiple monitors connected to an HDMI distribution amplifier because it is a metadata format that displays information about a monitor’s capabilities to the video source. When multiple monitors are connected, each monitor communicates its specifications (such as supported resolutions, refresh rates, and audio capabilities) to the HDMI distribution amplifier through EDID. This communication allows the amplifier to effectively manage the output to ensure that all connected displays receive the correct video signal that they can handle, which is essential for consistent and optimal performance across all monitors. If there is a mismatch in EDID or if one monitor does not correctly transmit its capabilities, it can lead to issues such as unsupported resolutions, incorrect aspect ratios, or black screens on some of the monitors. Thus, ensuring that the EDID information is accurately read and appropriately handled by the distribution amplifier helps maintain a seamless connection and operation across multiple monitors.