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单选题
Consider the MySQL Enterprise Audit plugin. On attempting to start the MySQL service after a crash, notice the following error: [ERROR] Plugin ‘audit_log’ init function returned error. In the audit log file, you notice the final entry: … What action should you take to fix the error and allow the service to start?（）
A
Re-install the audit plugin
B
Execute the command FLUSH LOGS
C
Execute the command SET GLOBAL audit_log_fiush= ON
D
Move or rename the existing audit.log file
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更多 “单选题Consider the MySQL Enterprise Audit plugin. On attempting to start the MySQL service after a crash, notice the following error: [ERROR] Plugin ‘audit_log’ init function returned error. In the audit log file, you notice the final entry: … What action should you take to fix the error and allow the service to start?（）A Re-install the audit pluginB Execute the command FLUSH LOGSC Execute the command SET GLOBAL audit_log_fiush= OND Move or rename the existing audit.log file” 相关考题
考题
单选题Identify a performance impact when using the Performance Schema.（）A
There is no impact on performanceB
The overhead depends on the settings of the Performance SchemaC
There is an overhead for querying the Performance Schema but not for having it enabledD
There is a constant overhead regardless of settings and workload
考题
单选题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
Gtid_mode must be set to AUTO during point in time recoveriesB
Mysqlbinlog ignores arguments to – exclude-gtids-it means ignore all events with GTIDsC
The server keeps track of which GTIDs have already been executed and skips thoseD
Enforce_gtid_consistency is set to ON
考题
单选题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?（）A
Mysql is installed as the Windows service name Mysql56, and uses c: /my-opts.cnf as the configuration fileB
An error message is issued because – install is not a valid option for mysqldC
A running Mysql 5.6 installation has its runtime configuration updated with the server variables set in c: /my-opts.cnfD
Mysqld acts as an MSI installer and installs the Mysql 5.6 version, with the c: /my-opts.cnf configuration file
考题
多选题Which two capabilities are granted with the SUPER privilege?（）AAllowing a client to kill other client connectionsBAllowing a client to shut down the serverCAllowing change of the server runtime configurationDAllowing client accounts to take over the account of another user
考题
多选题Full Atomicity, Consistency, Isolation, Durability (ACID) compliance is a necessity for a new application, which heavily reads and writes data. This requires the following config file options: Sync_binlog=1 Innodb_flush_log_at_trx_commit=1 Innodb_doublewrite=1 However, this configuration is expected to introduce disk I/O overhead. What three changes will reduce disk I/O overheads?（）AUse of soft links for database directories on the same physical diskBUse of delay_key_write=ON for batch index updateCAllocation of RAM to the buffer pool such that more of the data can fit in RAMDPlacement of InnoDB log files and datadir on separate physical disksEUse of separate directories on the same physical disk for log files and data files
考题
单选题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'
考题
多选题You examine the output of SHOW GLOBAL STATUS and notice that the value of Created_tmp_disk_tables is consistently increasing. Which two variables would likely fix this issue?（）ATable_open_cacheBTable_open_cache_instancsCTable_definition_cacheDTmp_table_sizeEMax_heap_table_sizeFMax_tmp_tables
考题
单选题You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output: Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0), root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) ) Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000), root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1) agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER （ ） Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000), root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?（）A
CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)B
SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'C
SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()D
SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'
考题
单选题User A issues the command: LOCK TABLES pets READ; Which command can User B execute against the pets table?（）A
UPDATE pets…B
SELECT….FROM petsC
INSERT INTO pets…D
ALTER TABLE pets…
考题
多选题Which two requirements would lead towards a high availability solution?（）AWhen uptime is criticalBWhen data must be refactoredCWhen application concurrency is staticDWhen data loss is unacceptableEWhen application is a single point of failure
考题
单选题You want to start monitoring statistics on the distribution of storage engines that are being used and the average sizes of tables in the various databases. Some details are as follows: The Mysql instance has 400 databases. Each database on an average consists of 25-50 tables. You use the query: SELECT TABLE_SCHEMA, 'ENGINE', COUNT (*), SUM(data_length) total_size FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE= 'BASE TABLE' GROUP BY TABLE_SCHEMA, 'ENGINE' ; Why is this query slow to execute?（）A
Collecting information requires large numbers of locks on various INFORMATION_SCHEMA tablesB
Aggregating details from various storage engine caches for the final output is time consumingC
Collecting information requires various disk-level operations and is time consumingD
Counting and summarizing all table pages in the InnoDB shared tablespace is time consuming
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