HDMI Hello I'm writing this because my subject needs to be longer

First of all HDMI stands for High-Definition Multimedia Interface. HDMI is used to transport uncompressed digital streams and its digital not analog. HDMI travels at 340 MHz and can support a TV or PC on a single cable. The first HDMI was created on December 9 2002. HDMI can be used for audio, device-controlling devices and video. HDMI also is used for Blu-ray in fact it is the only cable that Blu-ray discs use.

Link
http://en.wikipedia.org/wiki/High-Definition_Multimedia_Interface

Question
1. How many versions of HDMI are there?

2.How many channels does HDMI support?

3. What are the different types of HDMI devices?

4.True or False. HDMI cannot be bought at the same price as coaxial and RCA cables.

5.What does HDMI use to encrypt their signals?