Online Access Free Oracle.1Z0-888.v2022-02-17.q133 Practice Test (Page 3)

1Z0-888 Exam Question 6

Which three allocate memory per thread in MySQL? (Choose three.)

A.query cache

B.thread cache

C.read buffer

D.internal temporary table

E.sort buffer

F.InnoDB buffer pool instance

1Z0-888 Exam Question 7

Examine the mysqldumpslow output:

Which two options could explain the slow query?

A.There are 108 queries still being executed.

B.There is network congestion between client and server.

C.A table lock is causing delays.

D.No index has been defined on the filtered column.

E.A full table scan is being used.

1Z0-888 Exam Question 8

You attempt to connect to a MySQL Server by using the mysql client program. However, you receive this notice:

What would you run to fix the issue?

A.the mysql_upgrade script

B.the mysql client with the --ignore-password-hashing option

C.the mysql_secure_installation script to update server security settings

D.the mysql client with the --enable-cleartext-plugin option

E.the install plugin command for the mysql_cleartext_password plugin

1Z0-888 Exam Question 9

The MySQL error log shows:
InnoDB: Warning: a long semaphore wait:
The relevant parts of the InnoDB monitor output shows:

Which two options would help avoid the long wait in the future?

A.Increase the value of the innodb_read_io_threads option.

B.Deactivate the query cache.

C.Set the value of innodb_adaptive_hash_index to zero.

D.Increase the size of the InnoDB buffer pool.

E.Change the table to use HASH indexes instead of BTREE indexes.

F.Increase the value of the innodb_lock_wait_timeout option.

1Z0-888 Exam Question 10

Consider the index information for the dept_emp table in the employee's schema:

Which two conclusions can be made based on the output of the query? (Choose two.)

A.The secondary indexes are optimized for unique key look-ups.

B.The selectivity of the dept_no column is the best of the indexed columns.

C.There are three indexes on the table.

D.The values on the emp_no column must be unique.

E.There is a redundant index on the dept_no column.

F.There is a redundant index on the emp_no column.

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