Systems engineers work closely with systems analysts to maintain a company's IT system by developing the operating systems that run computers. Expect to be quizzed on a variety of technical questions that will test your knowledge of how computer systems work. Employers prefer candidates with a bachelor's degree in an engineering field and previous experience with technology.
What is the difference between RAID 0 & RAID 5?
It should a simple question if you have worked with computers & HDDs. RAID 0 - Block striping (req. 2 HDDs) and no mirroring or parity RAID 5 - Block striping with 1 dedicated parity drive (req. 3 HDDs)
To expand on the previous answer, RAID 0 improves HDD performance dramaticaly, but since there is no mirroring if one drive dies data is lost. RAID 0 should never be used on a system with critical data. In RAID 5, performance is slower, but it allows for the failure of a HDD with no loss of data. Consider instead, RAID 10. It requires a minimum of four HDD's, but provides an increase in performance with redundancy.