By default, which name is used for super user in Linux?
A. admin
B. supervisor
C. root
D. branch
查看答案
Which command is used to create a new user account?
A. newusr
B. addusr
C. newuser
D. adduser
The su –lcommand will do ___
A. Change the user password to “-l”
B. Disable the user account “l”
C. Disable the user account “-l”
D. Simulate a full login as super user
If you enable shadow password, which files does Linux store passwords?
A. /etc/passwd
B. /etc/password
C. /etc/shadow
D. /etc/shadowwd
In Linux, which command display a report of available free space remains on the storage devices?
A. chkdsk
B. freespace
C. fprp
D. df
微信支付 
支付宝支付