2014年8月28日星期四

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Exam Code: 1z0-062
Exam Name: Oracle Database 12c: Installation and Administration
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Exam Code: 1z0-883
Exam Name: MySQL 5.6 Database Administrator
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NO.1 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.2 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, TRUNATE TABLE
performance_schema.events_waits_current;
E. Disabling and re-enabling all instruments
F. Restarting Mysql
Answer: D,E

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Reference: http://dev.mysql.com/doc/refman/ 5.5 /en/performance-schema-timing.html

NO.3 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.4 Which two statements are true about InnoDB auto-increment locking?
A. The auto-increment lock can be a table-level lock.
B. InnoDB never uses table-level locks.
C. Some settings for innodb_autoinc_lock_mode can help reduce locking.
D. InnoDB always protects auto-increment updates with a table-level lock.
E. InnoDB does not use locks to enforce auto-increment uniqueness.
Answer: A

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Reference: http://dev.mysql.com/doc/refman/ 5.6 /en/innodb-auto-increment-configurable.html

NO.5 You have a login-path named "adamlocal" that was created by using the mysql_config_editor
command.
You need to check what is defined for this login_path to ensure that it is correct for you deployment.
You execute this command:
$ mysql_config_editor print -login-path=adamlocal
What is the expected output of this command?
A. The command prints all parameters for the login-path. The password is printed in plain text.
B. The command prints all parameters for the login-path. The password is shown only when you
provide the -password option.
C. The command prints all parameter for the login-path. The password is replaced with stars.
D. The command prints the encrypted entry for the login-path. The is only possible to see if an entry
exists.
Answer: C

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NO.6 What are four capabilities of the mysql client program?
A. Creating and dropping databases
B. Creating, dropping, and modifying tables and indexes
C. Shutting down the server by using the SHUTDOWN command
D. Creating and administering users
E. Displaying replication status information
F. Initiating a binary backup of the database by using the START BACKUP command
Answer: B,D,E,F

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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 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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