A field technician is dispatched to a corporate conference room where a newly installed ceiling-mounted projector is experiencing intermittent video degradation. The presenter's laptop is connected to the projector using a 50-foot (15-meter) passive HDMI cable run through the wall. When transmitting a 1080p video signal at 60Hz, the image displays normally. However, whenever the laptop resolution is increased to native 4K at 60Hz to display detailed engineering schematics, the projected image experiences digital noise ('sparkles'), brief black screens, and periodic loss of signal sync. Lowering the resolution back to 1080p immediately stabilizes the display. Which of the following is the most appropriate action for the technician to take to resolve this issue?
- Replace the passive cable with an active HDMI cable or an HDMI-over-Ethernet extender systemCevap
- BReplace the projector's backlight inverter board to supply higher voltage required for 4K decoding
- CRoll back the laptop's graphics adapter drivers to resolve video memory timing corruption during high-resolution rendering
- DAdjust the projector's optical keystone settings to compensate for signal sync loss at higher pixel clock rates