Agent information

Hi Team

I am new to xymon and trying to learn about it. But I am unable to figure
out few questions.

1. I run xymon client installation by apt-get. but can you tell me what is
actually running or getting installed in my system is it a rpm or what?
2. how my agent works. how does it gains information from the system it is
running on.
3. what is the architecture of the xymon.

I would really appreciate your help. Please give me the insight of the
tool.

-- 
Thanks and Regards

*Sanjana *