What do you need to test in DisplayPort interface?

Before video and audio content is sent over a DP link and displayed on the monitor screen a lot of communication has been occurring between a DP source and sink and a possible branch device.

DisplayPort: A Better Video Interface

What is DisplayPort Certification and Why is Individual Quality Control Just as Important? - Total Phase

DisplayPort vs. HDMl: A Comprehensive Comparison – CABLETIME

DisplayPort Guide Versus HDMI

UCD-400 • DisplayPort 1.4a - HBR3 8K Generator & Analyzer

Display Interfaces Compared (HDMI, Displayport, DVI, Thunderbolt)

DisplayPort Connectors

VGA, DisplayPort, HDMI, DVI - differences of the interfaces

Plugable USB-C or USB 3.0 to DisplayPort Adapter – Plugable Technologies

Tripp Lite 6ft DisplayPort to HDMI Adapter Cable Video / Audio Cable DP M/M 6' - Black

HDMI vs. DisplayPort: Which display interface reigns supreme?