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When a user complains about flickering issues while using a DisplayPort connection at a high resolution, what could be a potential cause that the IT support technician should consider first?
Correct Answer: A
Correct Answer. A. The DisplayPort cable is not certified for the required bandwidth DisplayPort cables that are not certified for the required bandwidth may cause flickering issues, especially at higher resolutions. Ensuring that the cable is DisplayPort certified to handle the specific resolution and refresh rate is crucial for maintaining image stability and quality. Option B is incorrect because while cable length can impact signal quality, certification for bandwidth is more critical for resolving flickering related to high data transfer rates. Option C is incorrect because the scenario implies the monitor supports the resolution since the issue is flickering, not an inability to display the resolution. Option D is incorrect because it's assumed that the graphics card supports DisplayPort as the connection is already in use.