Networks, Lightning, and cables oh my!

[MilitantB0B]

So, my wireless network has become a royral pain in the neck and I am changing over to a wired network (wave of the future my butt). I have to run a cable, outside of my hose from the 3rd floor to the 1st floor and my question is:

1.) Will a cable that long (just guestimate on the length cause I don't know) be able to transfer data reliably.
2.) Can I buy special outdoors network cable that is grounded?


Thanks in advance.