单项选择题
A.The RPM installation script sets a default password of password for new installations
B.The local root user must log in with a blank password initially: mysql –u root –p
C.New security measures mean that the mysql_secure_installation script must be run first on all new installations
D.The mysql_install_bd post-installation script used – random-password
多项选择题 What are four capabilities of the mysql client program?（）
多项选择题 Consider the events_% tables in performance Schema. Which two methods will clear or reset the collected events in the tables?（）
单项选择题 You execute the following statement in a Microsoft Windows environment. There are no conflicts in the path name definitions. C: \＞ mysqld – install Mysql56 – defaults – file = C :\my –opts.cnf What is the expected outcome?（）