Free Access Oracle.1Z0-888.v2022-04-28.q136 Practice Test (Page 15)

Question 66

You are using the Performance Schema to investigate replication on a slave which has a single master. The option slave-parallel-type is set to DATABASE.

Assume that all instruments and consumers are enabled and all threads are instrumented.
Which two facts can be concluded from the given output?

A.The slave is configured with slave_parallel_workers = 4

B.THREAD_ID 21 has stopped running.

C.The slave cannot process the relay log fast enough to use all threads.

D.At most, two schemas are being updates concurrently.

E.The server needs more cores to use all slave threads.

F.The salve has two intermediate relay slaves connected to it.

Question 67

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?

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

B.There are three indexes on the table.

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

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

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

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

Question 68

You are no longer able to log in to an existing MySQL Server because the root password credentials not working. You need to reset the root password to complete various administrative tasks. What are the two major methods that will achieve this? (Choose two.)

A.Start the MySQL Server with -initialize-insecure to force a password reset procedure on the command line.

B.Start the MySQL Server with reset-root-password in my.cnf, which will prompt you to enter a new root user password.

C.Start the MySQL Server in --safe-mode, which only loads the privilege system for changes as data is inaccessible.

D.Start the MySQL Server with --init-file pointing to SQL that executes an ALTER USER statement to change the root user password.

E.Start the MySQL Server with --skip-grant-tables and execute SQL, which will update the root password.

Question 69

An admin attempts to enforce stronger security by using these commands:

The admin then leaves the system running with the specified changes. What are two remaining security concerns?

A.The name of the dictionary file is too obvious.

B.The dictionary file word list is too short.

C.The validate_password plug-in has not been loaded.

D.The dictionary file is an insecure location.

E.validate_password_dictionary_file cannot be set without restarting the MySQL instance.

F.validate_password_policy cannot be set without restarting the MySQL instance.

Question 70

You are using replication and the binary log files on your master server consume a lot of disk space.
Which two steps should you perform to safely remove some of the older binary log files?
(Choose two.)

A.Execute the PURGE BINARY LOGS NOT USED command.

B.Edit the .index file to remove the files you want to delete.

C.Ensure that none of the attached slaves are using any of the binary logs you want to delete.

D.Remove all of the binary log files that have a modification date earlier than today.

E.Use the command PURGE BINARY LOGS and specify a binary log file name or a date and time to remove unused files.

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Question 66

Question 67

Question 68

Question 69

Question 70

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