A.-rw-r--r--1 11531 Jun 5 22:45 /etc/passwd

B.-rw-------1 11531 Jun 5 22:45 /etc/passwd

C.-rw-r--r--1 rootroot531 Jun 5 22:45 /etc/passwd

D.-rw-------1 rootroot531 Jun 5 22:45 /etc/passwd

A.filea.txthas the sticky bit set and a regular user cannot remove this permission.

B.filea.txtis a hard link whose permissions are inherited from the target and cannot be set directly.

C.filea.txthas the SetUID bit set which imposes the restriction that only the rootuser can make changes to the file.

D.filea.txtis owned by another user and a regular user cannot change the permissions of another user's file.

E.filea.txtis a symbolic link whose permissions are a fixed value which cannot be charged.

A.quota -e

B.quota

C.repquota

D.edquota

A.The inetd program

B.The kernel

C.The init program

D.The bootloader