When taking the LPI exam do you have to take both the LX0-101 and 102 exams at the same sitting or can you take the two on two different dates? Thanks.

Even if I had a job as a Linux admin I would find it almost impossible to do that job without a reference book at my side at all times. It seems almost impossible to learn all those commands along with their appropriate flags and countless files and there directory paths as well.

I have found that the Linux man pages are usually sufficient.
man commandname or man -k searchValue

Good luck on your exams!