User brian changes the permissions for db_data this command: chmod 4755 db_data What is true? 

Answer options:

A. db_data now has permissions rwsr-xr-x and can be deleted only by user brian.
B. db_data now has permissions rwsr-xr-x and, if executed, will inn with the permissions of user brian.
C. db_data now has permissions rwxr-sr-x and can be deleted only by members of the group owning it.
D. The permissions for db_data cannot be determined, because the permissions prior to the change have not been specified.
E. db_data must be an ordinary file, because special permissions cannot be set on a directory.

C

Use the chmod command to change permissions for a file or directory. You must be the owner of a file or directory, or have root access, to change its permissions. Here we do not know if brian owns db_data. Note: Permission - 7 full 6 read and write 5 read and execute 4 read only 3 write and execute 2 write only 1 execute only 0 none 0 --- no permission 1 --x execute 2 -w- write 3 -wx write and execute 4 r-- read 5 r-x read and execute 6 rw- read and write 7 rwx read, write and execut Solaris: Solaris Advanced User`s Guide