Free Access Oracle.1Z0-888.v2022-11-15.q104 Practice Test (Page 8)

Question 31

You have forgotten the root user account password. You decide to reset the password and execute:

Which additional argument makes this operation safer?

A.--old-passwords, to start MySQL to use the old password format while running without the grant tables.

B.--reset-grant-tables, to start the server with only the mysql database accessible.

C.--read-only, to set all data to read-only except for super users

D.--skip-networking, to prohibit access from remote locations

Question 32

A MySQL replication slave is set up as follows:
Uses all InnoDB tables
Receives ROW-based binary logs
Has the read-only option
The replication slave has been found in an error state. You check the MySQL error log file and find these entries:

What are two possible causes for this error to occur?

A.The slave user does not have INSERT, UPDATE, or DELETE permission and cannot execute the Write_rows function.

B.The applications have the SUPER privilege, which allows them to update rows.

C.For tables with UNIQUE keys, statement-based replication must be used to maintain integrity.

D.The slave was created with mysqldump -u root -p --skip-lock-tables -all-databases > /data/data.sql

E.The root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewrite.

Question 33

Where does MySQL Linux RPM install the mysqld binary?

A./usr/sbin/

B./usr/bin/

C./usr/libexec/

D./usr/local/mysql/bin/

E./opt/mysql/server/bin/

Question 34

An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data.
The SHOW SLAVE STATUSindicates these values:
RELAY_LOG_FILE=hostname-relay-bin.00004

RELAY_LOG_POS=1383

Which command set would make the slave current?

A.STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383;

B.STOP SLAVE; SET GLOBAL master_delay=0; START SLAVE;

C.STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVE;

D.STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; RELAY_LOG_FILE = 'hostname- relay-bin.00004', RELAY_LOG_POS = 1383;

Question 35

You are investigating the performance of a query which selects data from an InnoDB table.
Consider this Performance Schema diagnostics output for the query:

Which statement is true about the output?

A.The query read data from the data file rather than directly from the buffer pool.

B.The query did not find its table in the table definition cache.

C.The event with event_id = 8945 is a child of the event with event_id=8944.

D.The time the query took is the sum of all timer_wait values.

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