Linux. Answers don't have to be too specific.

1. What is the difference between ext3 and ext4 filesystem?

2. Is it possible to convert a FAT32 Hard Drive to NTFS without losing all data on the drive? I want to change from FAT32 to NTFS, How can I do that without the loss of my programs?

3.What are inodes in Linux? How to find the inode associated with a file? What happens to the inode when you move a file within a filesystem?

4. Working with root privileges, you are planning to delete some files but want to make sure that the wildcard expression you use is correct. Suggest two ways you could make sure you delete the correct files. 5. What is fragmentation?