basic questions on armors

[Pocus]

Ok I have read the faq (at least the armor part). What I would like explained is the damage absorption effect of scattering armor. Do they add for each component? What is the real effect?

If the damage is above the absorption rating, what happens? nothing, or a reduction in dmg?

Every weapon hitting the vessel has his damage rating reduced, or the first one in the round? I stand confused.