单项选择题
A.ssh的无密码登录 B.vsftpd的匿名登录 C.ssh的密码登录 D.httpd的密码登录
A.ServerName B.NameVirtualHost*:80 C.ServerTokensOS D.PidFilerun/httpd.pid
A.NameVirtualHost*:80 B.ServerTokensOS C.PidFilerun/httpd.pid D.ServerRoot“/etc/httpd”