Mini DisplayPort is a compact version of the DisplayPort connector introduced by Apple in 2008. Mini DisplayPort is free to license, and in 2009 it was included in the official DisplayPort 1.2 spec. In 2011 Apple and Intel announced the Thunderbolt format, which used the same physical connector, but significantly different protocols.
Screen refresh rate is the number of times an image on any type of monitor or television is reconstructed per second. This is measured in hertz.. (Hz).
For a LCD/LED display, this means a refresh rate of either 120Hz or 240Hz. 24 frames fits exactly in 120 frames per second. 120/24=5, so each frame is displayed 5 times. There is no need for the 3:2 pulldown technique, each frame has exactly the same time on the screen.