Free Access Oracle.1Z1-888.v2022-04-27.q131 Practice Test (Page 18)

Question 81

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

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

A.to prevent schema changes from propagating to the slave before they are validated

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

C.to allow the remaining events to be processed on the slave while not receiving new events from the master

D.to allow for point-in-time recovery on the slave

E.to prevent any transaction experiencing a deadlock

Question 82

After rebooting the host, you attempt to start the mysqld service. You get the following error:
Can't start the server: Bind on TCP/IP port: Address already in use
What is the most likely cause of this error?

A.The mysql service has already been started on the same port.

B.The mysql.sock file in the MySQL /tmp directory was not removed after the reboot, so mysqld still thinks there is an active server running.

C.The /etc/hosts file does not have a valid IP entry for mysqld localhost, so it is binding to 127.0.0.1, which is already in use.

D.You failed to specify the port number 3306 to the command to start the server, so it is defaulting to port 80, which is in use by the built-in web server.

E.The network service process in the server is frozen, so all TCP/IP connections are paused and cannot be reused.

Question 83

You have installed MySQL Server for the first time on your system. However, the data directory along with the tables in the mysql system database are missing. Which step do you perform to create the contents of the data directory?

A.Run the create_system_tables.sql file

B.Run the mysql_unpack.sql file

C.Invoke mysqld with the --initialize option.

D.Invoke mysql with the --initialize option.

Question 84

Suppose you are adding rows to a MyISAM table and the --datadirlocation runs out of disk space.
What will happen when this occurs?

A.An error message will be returned to the client .Server Error: ER_IO

B.The server will crash.

C.The server suspends that INSERT operation until space becomes available.

D.The server suspends operations for all storage engines until space becomes available.

Question 85

old_alter_table is disabled as shown.
mysql> SELECT @@old_alter_table;

Consider this statement on a RANGE-partitioned table:
mysql> ALTER TABLE orders DROP PARTITION p1, p3;
What is the outcome of executing this statement?

A.All data in p1 and p3 partitions is removed and the table definition is changed.

B.All data in p1 and p3 partitions is removed, but the table definition remains unchanged.

C.It results in a syntax error because you cannot specify more than one partition in the same statement.

D.Only the first partition (p1) will be dropped because only one partition can be dropped at any time.

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Question 81

Question 82

Question 83

Question 84

Question 85

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