please answer all the questions based on linux

21. Run "sudo udevadm info --query=all --name=/dev/sda" in your VM. What is the "ID_MODEL" of your sda device (screenshot)? 22. What does SMART stand for (as used with linux devices)? 23. Provide a brief description of what the utility of a SMART enabled hard drive would be (and associated monitoring)? 24. For a given file named "mylinuxfile" what command would: a. Add "group" users execute permissions without modifying permissions further b. Completely remove execute permissions without affecting permissions further. C. Set the permissions on the file to "rw-rw-r-x" using i. numerical permissions ii. Symbolic permissions d. Change group of file to "fred" e. You need to change the group of mylinuxfile without knowing the owner. Provide one command that will change the folder and all subfolder/files group to "users" without modifying or setting owner? 25. You have a file that looks like below: -IW-rw-r-- 2 x2gouser avahi 24 Jan 28 11:01 py-test.py After permissions there is a number 2, what does the number mean? 26 11