Question 1

Your MySQL server was upgraded from an earlier major version.

The sales database contains three tables, one of which is the transactions table, which has 4 million rows.

You are running low on disk space on the datadir partition and begin to investigate.

Examine these commands and output:

Other-Image-5400dea42-15fa-4b95-aaab-09ec510a61e4

Which two statements are true? (Choose two.)

Options :

A :

Executing SET GLOBAL innodb_row_format=COMPRESSED and then ALTER TABLE transactions

will free up disk space.

B : Executing ALTER TABLE transactions will enable you to free up disk space.

C : Truncating the sales and leads table will free up disk space.

D : Truncating the transactions table will free up the most disk space.

E : The transactions table was created with innodb_file_per_table=OFF.

Answer: A

Question 2

Force Majeure is a catastrophic failure on a major level of the database operation. Regular backups are key to helping avoid data loss in such situations.

Which two other steps can help avoid data loss in a major catastrophe? (Choose two.)

Options :

A : Implement a failover strategy to another geographic location.

B : Create a master-master pair for each service.

C : Have a second data centre in a different region or country.

D : Keep software updated to the latest version.

E : Use RAID 10 storage for data.

F : Use on-site network-attached storage to separate service from data.

Answer: A,C

Question 3

Which two statements are true about using MySQL Enterprise Monitor Query Analyzer? (Choose two.)

Options :

A : The single query QRTi pie chart in the Query Analyzer view is based on the average execution of all statements.

B : It is possible to retrieve a normalized statement, but never the exact statement that was executed.

C : It is possible to configure the Query Analysis built-in advisor to get notified about slow query execution.

D : It is possible to list and analyze statements in an arbitrary graph range selection from timeseries graphs.

E : It is possible to import data into the Query Analyzer from heterogeneous sources, such as CSV.

Answer: C,D

Question 4

You adjust a default configuration to the following /etc/my.cnf on a Linux installation:

[mysqld]

Loq-bin

Binrylog_format=ROW

You do not notice the spelling error in binrylog_format and restart your production server.

How does the MySQL server behave with incorrectly spelled options?

Options :

A : Mysqld uses internal configuration versioning and reverts to the previous configuration.

B : When using mysql_config_editor for configuration adjustments, it detects incorrect syntax and typing mistakes.

C : The mysqld_safe script skips the unknown variable and starts using the remaining configuration changes.

D : Mysqld prints to the error log about an unknown variable, and then exits.

Answer: D

Question 5

You have a MySQL replication setup and you intentionally stop the SQL thread on the slave.

mysql> SHOW SLAVE STATUS\G

... Slave_IO_Running: YesSlave_SQL_Running: No

What are two reasons that you may stop the SQL thread on the slave while keeping the I/O thread running? (Choose two.)

Options :

A : to allow the remaining events to be processed on the slave while not receiving new events from the master

B : to allow a backup to be created under reduced load

C : to allow for point-in-time recovery on the slave

D : to prevent schema changes from propagating to the slave before they are validated

E : to prevent any transaction experiencing a deadlock

Answer: B,C

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