哪个文件保存了组账户的加密密码?
A. /etc/group
B. /etc/gshadow
C. /etc/gsecure
D. /etc/group.conf
文件/etc/shadow中一行内容如下，数字15853的含义是?il:*:15853:0:99999:7:::
A. The UID of the mail user
B. The number of files owned by mail
C. The date of the last password change (since 1/1/1970)
D. The number of days until the account expires
以下哪个配置文件包含与创建用户和组有关的信息，例如UID和GID的最小值和最大值等?
A. /etc/groupinfo
B. /etc/login.defs
C. /etc/login.info
D. /etc/loginlist
Yoyo是一个新的系统管理员，她需要使用超级权限执行一些被授权的任务，则合适的做法是?
A. Give Yoyo the root account password shared by the system admin team and have her log into the root account via the GUI.
B. Give Yoyo the root account password shared by the system admin team and have her log into the root account via the su - command.
C. Give Yoyo the root account password shared by the system admin team and have her issue commands that need super user privileges via the su -c command.
D. Set Yoyo up in the /etc/sudoers file and have her issue commands that need super user privileges via the sudo command.
E. Set Yoyo up in the /etc/sudoers file and have her issue commands that need super user privileges via the su -c command.
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