Operating System Unit 4

1. What are files and explain the access methods for files?
2. Explain File system implementation
3. Explain the various Directory structures
4. Write notes about the protection strategies provided for files
5. Explain the various File allocation methods
6. Write note on (i) Log structured file system
 (ii) Efficiency and Usage of disk space
 (iii) File system mounting
7. Explain Linux File system

Operating System Unit 4

PART – A (2 MARKS) 
1. What is File system?
2. What are the various layers of a file system?
3. What are the attributes of a file?
4. What are the various file operations?
5. List any four types of file
6. What are the structures used in file-system implementation?
7. What are the functions of virtual file system (VFS)?
8. Define seek time and latency time.
9. What are the allocation methods of a disk space?
10. What are the advantages of Contiguous allocation?
11. What are the drawbacks of contiguous allocation of disk space?
12. What are the advantages of Linked allocation?
13. What are the disadvantages of linked allocation?
14. What are the advantages of Indexed allocation?
15. How can the index blocks be implemented in the indexed allocation scheme?
16. What are the various file operations?
17 What is the information associated with an open file?
18 What are the different accessing methods of a file?
19 What is Directory?
20 What are the operations that can be performed on a directory?
21 What are the most common schemes for defining the logical structure of a
directory?
21 Define UFD and MFD.
22 What is a path name?
23 What is cache? How it improves the performance of the system?
24 What is log? What is its use?
25 What is full and incremental backup?