A.ssh的無密碼登錄 B.vsftpd的匿名登錄 C.ssh的密碼登錄 D.httpd的密碼登錄
A.ServerName B.NameVirtualHost*:80 C.ServerTokensOS D.PidFilerun/httpd.pid
A.NameVirtualHost*:80 B.ServerTokensOS C.PidFilerun/httpd.pid D.ServerRoot“/etc/httpd”