使用systemctl命令查询httpd服务运行状态的命令是()
A. systemctl start httpd
B. systemctl status httpd
C. systemctl stop httpd
D. systemctl restart httpd
使用systemctl命令启动smb服务的命令是()
A. systemctl smb stop
B. systemctl smb status
C. systemctl start smb
D. systemctl smb start
使用systemctl命令设置smb服务随系统启动而启动的命令是()
A. systemctl start smb
B. systemctl enable smb
C. systemctl status smb
D. systemctl stop smb
查询本机当前运行级别的命令是()
A. system level
B. status level
C. init 0
D. runlevel