单项选择题

A.Gtid_mode must be set to AUTO during point in time re……

An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）

A.Gtid_mode must be set to AUTO during point in time recoveries
B.Mysqlbinlog ignores arguments to – exclude-gtids-it means ignore all events with GTIDs
C.The server keeps track of which GTIDs have already been executed and skips those
D.Enforce_gtid_consistency is set to ON

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单项选择题An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be rolled forward to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）

A.STOP SLAVE; CHANGE MASTER TO MASTER_DELAY =0, RELAY_LOG_FILE = 'hostnamerelay- bin.00004' , RELAY_LOG_POS= 1383
B.STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383
C.STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVE
D.STOP SLAVE; SET GLOBAL master_delay =0; START SLAVE

多项选择题What are three methods to reduce Mysql server exposure to remote connections?（）

A.Setting — skip-networking when remote connections are not required
B.Using the sql_mode=STRICT_SECURE after connections are established for encrypted communications
C.Setting specific GRANT privilege to limit remote authentication
D.Setting – mysql_secure_configuration to enable paranoid mode
E.Using SSL when transporting data over remote networks

单项选择题Following a server crash, the automatic recovery of InnoDB fails. How would you begin to manually repair the InnoDB tables?（）

A.Start the server with the – innodb_recover_options option set to FORCE
B.Start the server with the – innodb_force_recovery option set to a non-zero value
C.Start the server as usual, and then execute the REPAIR TABLE command
D.Start the server as usual, and then execute the CHECK TABLE command

多项选择题Which three statements describe how the strict SQL mode provides added security?（）

A.It rejects statements that try to insert out-of-range values
B.It rejects invalid dates
C.It limits the operations that the server can perform
D.It rejects queries that produce out-of-range values
E.It rejects dates with zero day or month values

单项选择题The following commands are available in the Linux binary distributions of Mysql: Mysqld Mysqld_safe Mysql.server What is the correct description of each of these commands?（）

A.A
B.B
C.C
D.D