220-801 · Question #948
Which of the following transmits a digital signal?
The correct answer is D. DisplayPort. DisplayPort is a digital video and audio interface standard that transmits data as a digital signal. VGA (A) is an analog interface that transmits video as varying voltage levels - it was the dominant standard from the late 1980s through the 2000s but is entirely analog. XGA…
Question
Which of the following transmits a digital signal?
Options
- AVGA
- BXGA
- CComponent video
- DDisplayPort
How the community answered
(38 responses)- B5% (2)
- C3% (1)
- D92% (35)
Explanation
DisplayPort is a digital video and audio interface standard that transmits data as a digital signal. VGA (A) is an analog interface that transmits video as varying voltage levels - it was the dominant standard from the late 1980s through the 2000s but is entirely analog. XGA (B) is a display resolution specification (1024×768), not a connector or signal type, so it does not transmit anything. Component video (C) uses three analog signals (Y, Pb, Pr) transmitted over separate cables. DisplayPort, like HDMI and DVI-D, encodes video and audio as digital data packets, providing a cleaner, higher-quality signal immune to the noise and degradation inherent in analog transmission.
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