1)cat>abc,if the requested file does not exist,error will be given by
a)kernel
b)Shell
c)root
d)None of the Above

2)To delete an user along with its home directory,the command is
a)user -d username
b)user -D username
c)user -r username
d)userdel -R username

3)user passwords are stored in
a)/etc/password
b)/root/password
c)/etc/passwd
d)/root/passwd

4)All run levels are stored in
a)/etc/fstab
b)/etc/init
c)/etc/inittab
d)/etc/rc.d

5)To check if a service is running ,the command is
a)Ntsysv
b)setup
c)/etc/rc.d/init.d/service
d)/etc/service

6)Password is applied using
a)psswd
b)pssword
c)uerpasswd
d)passwd username

This seems like homework..?

Even if it is not homework, all questions are answered simply by executing the said command, going through the said files or looking at the man pages. I am not sure why this was posted to the forum!

Do your own homework. If you can't figure it out, read your textbook or ask your teacher...this is verbatim homework, which is easily solved by reading man pages, at the very least.

Why do people do this? What do you plan to do when you actually need this knowledge on your job?

Per the LQ Rules, please do not post homework assignments verbatim. We're happy to assist if you have specific questions or have hit a stumbling point, however. Let us know what you've already tried and what references you have used (including class notes, books, and Google searches) and we'll do our best to help. Also, keep in mind that your instructor might also be an LQ member.