多项选择题

Which two capabilities are granted with the SUPER privilege?（）

A.Allowing a client to kill other client connections
B.Allowing a client to shut down the server
C.Allowing change of the server runtime configuration
D.Allowing client accounts to take over the account of another user

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单项选择题

You have table 'apps','userdata' on server that uses MyISAM storage engine.
You want to transfer this data to server but use InnoDB engine instead. You execute the following commands: ServerB commands:
Shell＞ mysqldump –u root –h server –no-data apps userdata | mysql –u root –p apps
Shell＞ mysql –u root –p –h server –e 'ALTER TABLE 'apps','userdata' ENGINE=InnoDB;'
Shell＞ mysqldump –u root –p –h server –no-create-info –order-by-primary apps userdata | mysql –u root –p apps
What effect does the – order-by-primary argument have on the mysqldump command?（）

A.It exports tables with the most indexes first to assist with import speeds
B.It ensures that unique indexes have no conflicts when the data is dumped
C.It orders by primary key to assist in speeding up importing to InnoDB tables
D.It must be specified so index data is dumped correctly when –on-create-info is used

单项选择题

A user executes the statement;
PURGE BINARY LOGS TO 'mysql-bin.010';
What is the result?（）

A.It deletes all binary log files, except 'mysql-in.010'
B.It deletes all binary log files up to and including 'mysql-bin.010'
C.It deletes all binary log files before 'mysql-bin.010'
D.It deletes all binary log files after 'mysql-bin.010'

单项选择题

You have taken a Logical Volume Manager (LVM) snapshot backup of a volume that contains the MySQL data directory. Why is it important to remove snapshots after completing a RAW backup in this way?（）

A.The snapshot size will continue to grow as changes to the volume are made
B.The snapshots take a significant amount of disk space as they are a duplicate copy of the data
C.The system can only support one snapshot per volume, and you need to remove it to be able to take your next backup
D.The system keeps a copy of changes in memory and can cause an out of memory event