please answer this questions related to linux

Question 11 (0.5 points) What is the /etc/mtab file? A/ Hide hint for Question 11 google (linux /etc/mtab file) Pl: we should know where the information regarding system mounts can be viewed. Question 12 (0.5 points) Contrast the /etc/fstab file with mtab file above. Hide hint for Question 12 Similar/related to mtab, but how? Question 10 (0.5 points) Somebody inadvertently pulls the plug (power) on your linux server. Fortunately your filesystem is using a recent (default on Ubuntu) filesystem. Your recovery will be much quicker and will likely have very small chance of data corruption than with earlier filesystems. Why is that, and how does this feature work? A Hide hint for Question 10 Here, were looking for you to have picked up from the reading/lectures a particular contrast between older (eg ext2 filesystems) contrasted with newer (ext3/4) filesystems. This along with 4.2.1 section in our text should get you on the right path