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NO.1 In a design situation, there are multiple character sets that can properly encode your data.
Which three should influence your choice of character set?
A. Disk usage when storing data
B. Syntax when writing queries involving JOINS
C. Comparing the encoded data with similar columns on other tables
D. Memory usage when working with the data
E. Character set mapping index hash size
Answer: C,D,E
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NO.2 Assume that you want to know which Mysql Server options were set to custom values.
Which two methods would you use to find out?
A. Check the configuration files in the order in which they are read by the Mysql Server and
compare them with default values.
B. Check the command-line options provided for the Mysql Server and compare them with default
values.
C. Check the output of SHOW GLOBAL VARIABLES and compare it with default values.
D. Query the INFORMATION_SCHEMA.GLOBAL_VARIABLES table and compare the result with
default values.
Answer: C
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NO.3 A Mysql Server has been running an existing application successfully for six months.
The my.cnf is adjusted to contain the following additional configuration:
[mysqld]
Default-authentication-plugin=sha256_password
The Mysql Server is restarted without error.
What effect will the new configuration have in existing accounts?
A. They will have their passwords updated on start-up to sha256_password format.
B. They will have to change their password the next time they login to the server.
C. They are not affected by this configuration change.
D. They all connect via the secure sha256_password algorithm without any configuration change.
Answer: D
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Reference: http://dev.mysql.com/doc/refman/ 5.6 /en/sha256-authentication-plugin.html
NO.4 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.Mysqld acts as an MSI installer and installs the Mysql 5.6 version, with the c: \my-opts.cnf
configuration file.
B.Mysql is installed as the Windows service name Mysql56, and uses c: \my-opts.cnf as the
configuration file
C. An error message is issued because - install is not a valid option for mysqld.
D. A running Mysql 5.6 installation has its runtime configuration updated with the server variables
set in c: \my-opts.cnf.
Answer: B
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NO.5 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.6 Mysqldump was used to create a single schema backup;
Shell> mysqldump -u root -p sakila > sakila2013.sql
Which two commands will restore the sakila database without interfering with other running
database?
A. Mysql> USE sakila; LOAD DATA INFILE 'sakila2013.sql';
B. Shell> mysql -u root -p sakila sakila2013.sql
C. Shell> mysql import -u root -p sakila sakila2013.sql
D. Shell> mysql -u root -p -e 'use sakila; source sakila2013.sql'
E. Shell> mysql -u root -p -silent < sakila2013.sql
Answer: B
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Reference: http://mysql.livejournal.com/133572.html
NO.7 You inherit a legacy database system when the previous DBA, Bob, leaves the company. You
are notified that users are getting the following error:
mysql> CALL film_in_stock (40, 2, @count);
ERROR 1449 (HY000): The user specified as a definer ('bon'@'localhost') does not exist
How would you identify all stored procedures that pose the same problem?
A. Execute SELECT * FROM mysql.routines WHERE DEFINER='bob@localhost';.
B. Execute SHOW ROUTINES WHERE DEFINER='bob@localhost'.
C. Execute SELECT * FROM INFORMATION_SCHEMA. ROUTINES WHERE DEFINER='bob@localhost';.
D. Execute SELECT * FROM INFORMATION_SCHEMA. PROCESSLIST WHERE USER='bob' and HOST='
localhost';.
E. Examine the Mysql error log for other ERROR 1449 messages.
Answer: D
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NO.8 You are using replication and the binary log files on your master server consume a lot of disk
space.
Which two steps should you perform to safely remove some of the older binary log files?
A. Ensure that none of the attached slaves are using any of the binary logs you want to delete.
B. Use the command PURGE BINARY LOGS and specify a binary log file name or a date and time to
remove unused files.
C. Execute the PURGE BINARY LOGE NOT USED command.
D. Remove all of the binary log files that have a modification date earlier than today.
E. Edit the .index file to remove the files you want to delete.
Answer: D
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