CS609  System Programming Final Subjective Questions 2012

Write down the two main features of FAT12? (2 marks) 

How many bytes are used for FCB in FAT12 & FAT16 and to store a cluster in FAT32 how many bytes are required? (2 marks) 

What is paging in context of non contiguous memory management system? (2 marks) 

What does it indicate if the value of first byte of data part of partition table is 00H? (2 marks) 

Write down the formula to translate the cluster # into LSN for FAT 32 file system. (3 marks) 

What are selectors and why we use them? (3 marks) 

Is LSN=0 and LBA=0 same thing? Why or why not? 3marks 

Which data structure is derived from BPB and where it resides? (3 marks) 

In interval timer, what is the purpose of using the following ports?43H, 40H, 41H, 42H  (3 marks) 

Describe how a chain of cluster in FAT12 is managed.  (5 marks) 

How LSN is translated to LBA in NTFS based system?   (5 marks)  

How a PC operate in real mode?    (5 marks)