CS609 Current Final Term Fall 2013 File 2

My today paper is:

5 marks questions
1)find the root directory sector where resrved sector = 1 and sectr per FAT = 9 , use appropriate assumption?
2)how the descriptor table describes as many segments and what are the attributes of segments?
3)write down atonomy of NTFS file syustem?
4)write the limitation of biosdisk()

3marks questions
1)how DMA works in BLock transfer mode?
2)how cros refernce of clusters can be detected?
3)LSN = 0 and LBA = 0 are same things? why if yes or no?
4)major enhancements on FAT 32 comparing with FAT 12 and FAT 16?
2 marks qstns
1)in DMA what is purpose of count register?
2)differnce between COM file and DOS EXE?
3)which file system keeps the backup of its boot block?
4)calculate the sector no for the following
I C H
we have the following info
blocks per cluster = 8
first user block number = 20