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NO.1 Which two are true regarding MySQL binary and text backups?
A. Binary backups are usually faster than text backups.
B. Binary backups are usually slower than text backups.
C. Text backups are human-readable while binary backups are not.
D. Binary backups are not portable across different operating systems.
Answer: C,D

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NO.2 You need to replicate a table from a master to a slave. The master and slave copies of the table
will have different number of columns.
Which two conditions must be true?
A. Each extra column in the copy with more columns must not have a default value.
B. Columns that are common to both versions of the table must be defined in the same order on the
master and the slave.
C. The slave database cannot have more columns than the master. Only the master database can
have more columns.
D. Columns that are common to both versions of the table must come first in the table definition,
before any additional columns are additional columns are defined on either server.
E. The master database cannot have more columns than the slave. Only the slave deatbase can have
more columns.
Answer: B,D

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NO.3 You have been notified that the 'apps' . 'reports' table has been accidentally truncated.
You have single file mysqldump backup available taken prior to the truncate. The backup contains all
the tables from the instance, and the 'apps' . 'reports' table must be restored without affecting the
other remaining databases and tables.
Which restore option is suitable in this scenario?
A. Restore the backup to another databases instance and obtain a copy of the reports table
individually.
B. Extract the 'apps' . 'reports' table from the backup using the SOURCE command.
C. Execute LOAD DATA INFILE 'backup.sql' SCHEMA='apps' TABLE= 'reports'
D. Execute mysqldump on the backup,sql file and apply - filter arguments to obtain only the 'apps' .
'reportys' table.
Answer: A

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NO.4 Consider the query:
Mysql> SET @run = 15;
Mysql> EXPLAIN SELECT objective, stage, COUNT (stage)
FROM iteminformation
WHERE run=@run AND objective='7.1'
GROUP BY objective,stage
ORDER BY stage;
The iteminformation table has the following indexes; Mysql> SHOW INDEXES FROM iteminformation:
This query is run several times in an application with different values in the WHERE clause in a
growing data set.
What is the primary improvement that can be made for this scenario?
A. Execute the run_2 index because it has caused a conflict in the choice of key for this query.
B. Drop the run_2 index because it has caused a conflict in the choice of key for this query.
C. Do not pass a user variable in the WHERE clause because it limits the ability of the optimizer to use
indexes.
D. Add an index on the objective column so that is can be used in both the WHERE and GROUP BY
operations.
E. Add a composite index on (run,objective,stage) to allow the query to fully utilize an index.
Answer: B

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NO.5 A general purpose MySQL instance is configured with the following options:
-- log-slow-queries -- long-query-time=,0001 -- log-slow-admin-queries -- general-log -- log-b
in -- binlog-format=STATEMENT -- innodb-flush-log-at-trx-commit=1
Which three statements are true?
A. The General Query Log records more data than the Binary Log.
B. The binary Log records more data than the General Query Log.
C. The Slow Query Log records more data than the General Query Log.
D. The General Query Log records more data than the Slow Query Log.
E. The Slow Query Log records more data than the Binary Log.
F. The Binary Log records more data than the Slow Query Log.
Answer: A,D,E

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NO.6 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?
A. Table_open_cache
B. Table_open_cache_instancs
C. Table_definition_cache
D. Tmp_table_size
E. Max_heap_table_size
F. Max_tmp_tables
Answer: D,E

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NO.7 Consider the Mysql Enterprise Audit plugin.
A CSV file called data.csv has 100 rows of data.
The stored procedure prepare_db ( ) has 10 auditable statements.
You run the following statements in the mydb database: Mysql> CALL prepare_db ( );
Mysql> LOAD DATA INFILE '/tmp/data.cav' INTO TABLE mytable;
Mysql> SHOW TABLES;
How many events are added to the audit log as a result of the preceding statements?
A. 102; top-level statements are logged, but LOAD DATA INFILE is logged as a separate event.
B. 3; only the top-level statements are logged.
C. 111; top-level statements and all lower-level statements are logged.
D. 12; only top-level statements and stored procedure events are logged.
Answer: B

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Reference: http://dev.mysql.com/doc/mysql-security-excerpt/5.5/en/audit-log-plugin-
loggingcontrol.html

NO.8 Consider the events_% tables in performance Schema.
Which two methods will clear or reset the collected events in the tables?
A. Using DELETE statements, for example, DELETE FROM
performance_schema.events_watis_current;
B. Using the statement RESET PERFORMANCE CACHE;
C. Using the statement FLUSH PERFORMANCE CACHE;
D. Using TRUNCATE statements, for example, TRUNCATE TABLE
performance_schema.events_waits_current;
E. Disabling and re-enabling all instruments
F. Restarting Mysql
Answer: D,E

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