Post Indexer Network terms

HI,

I am looking for documentation for Post Indexer plugin. and can not find it.
right now, I have two questions.

1. What happens if there are two categories on two different blogs with the same name and slug , Are they considered as one network term or two different ?

2. I am looking for get_network_terms() function, Is there ? Is there another way to get all terms across the network?