命令提示行root @host dev中host表示（）

下面通过UPDATE语句将root用户的密码修改为mypwd2的语句中,正确的是 A: UPDATE mysql.user SET Password=PASSWORD('mypwd2') WHERE User='root' and Host='localhost'; B: UPDATE mysql.users SET Password=PASSWORD('mypwd2') WHERE User='root' and Host='localhost'; C: UPDATE mysql.users SET Password=PASSWORD('mypwd2') WHERE User='root' OR Host='localhost'; D: UPDATE mysql.user SET Password=PASSWORD('mypwd2') WHILE User='root' OR Host='localhost';

Linux操作系统默认的系统管理员账户是? A: admin B: host C: root D: boot

猪是猪肉绦虫的何种宿主 A: paratenic host B: intermediate host and final host C: final host D: reservoir host E: intermediate host

使用文字法为test文件修改权限：比如 给同组用户分配执行权限[root@host root]# chmod g+x test那么，给所属主、同组和其他用户分配读、写和执行权限命令为： [root@host root] A:

6. 中间宿主是： A: A、paratenic host B: B、definitive host C: C、intermediate host D: D、resevoir host E: E、host specificity

root、rOOt、Root、rooT表示的同一个名称

While for business manner, for banquet, the honor seat is for host （ ） host, and the inferior seat is for host NO.2 .

连接 MySQL 数据库的正确方法是( ) A: mysql_open("localhost","root","root"); B: mysql_connect("localhost","root","root"); C: connect_mysql("localhost","root","root"); D: dbopen("localhost","root","root");

Consider a TCP connection between Host A and Host B. Suppose that the TCP segment traveling from Host A to Host B have source port number x and destination port number y. What are the source and destination port numbers for the segments traveling from Host B to Host A?