Free Access Oracle.1Z1-888.v2022-07-14.q104 Practice Test (Page 8)

Question 31

Consider these global status variables:

Which two conclusions can be made from the output? (Choose two.)

A.There are 140 Performance Schema threads at the time of the output.

B.The thread cache has been configured with thread_cache_sizeset to at least 6.

C.All max_connectionswere in use at 2018-03-22 14:54:06

D.There are more connections being idle than executing queries.

E.There are 510 connections to MySQL at the time of the output.

Question 32

After analysis on the slow query log on a high-end OLTP service, the table identified in the slow queries is:

What are the two most likely reasons for the slowness given this output?

A.Using default values for DATETIME causes table scans.

B.The engine type is not appropriate to the application use.

C.Date should be a TIMESTAMP field for better performance.

D.No indexes are defined.

E.The User field is too long for most names.

Question 33

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? (Choose two.)

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

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

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

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

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

Question 34

These details are shown when logged in to an account:

Which set of statements would match the accounts shown?

A.mysql> CREATE USER 'robert'@'localhost' IDENTIFIED BY 'secret_password';mysql>CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';

B.mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';mysql> GRANT PROXY ON 'employee'@'localhost' TO 'robert'@'localhost';

C.mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';mysql> CREATE USER ''@'' IDENTIFIED BY 'valid_password' WITH PROXY 'employee'@'localhost';

D.mysql> CREATE_USER ''@'' IDENTIFIED WITH authentication_pam ACCOUNT LOCK;mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';mysql> GRANT PROXY ON 'employee'@'localhost' TO ''@'';

Question 35

The Performance Schema includes these tables related to status variables:

Which two facts are true about these tables? (Choose two.)

A.The variable values in status_by_accountare the sum of those in status_by_hostand status_by_user grouped by the variable name.

B.The session_statustable is equivalent to status_by_threadfor the current thread.

C.The variable values in global_statusare the sum of those in status_by_threadgrouped by the variable name.

D.All these tables have the same number of rows.

E.The global_statustable is equivalent to the SHOW GLOBAL STATUSstatement.

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Question 31

Question 32

Question 33

Question 34

Question 35

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