Get 2023 Free Oracle 1Z0-888 Exam Practice Materials Collection [Q48-Q63]

Get 2023 Free Oracle 1Z0-888 Exam Practice Materials Collection

Get Latest and 100% Accurate 1Z0-888 Exam Questions

Oracle 1Z0-888 certification exam is a valuable credential for professionals who work with MySQL databases. MySQL 5.7 Database Administrator certification demonstrates your knowledge and skills in managing and optimizing MySQL databases, which are essential for many businesses and organizations. With this certification, you can differentiate yourself from other database administrators and advance your career in the field of database management.

NEW QUESTION # 48
You will configure a MySQL Server to act as a replication master. Which two options must be configured correctly to allow this?

A. log-master-updates
B. log_bin
C. master-logging
D. enable-master-start
E. server-id
F. rpl-recovery-rank

Answer: B,E

NEW QUESTION # 49
While attempting to set up a new replication slave on host `192.168.0.25' with the user `replication', you encounter this error:

What should you do to resolve this error?

A. Add the user [email protected] with the correct password to the slave.
B. Edit the my.ini file on the slave so that the master-host variable is equal to the IP address of the master, and restart the slave.
C. Add the user [email protected] with the correct password to the master.
D. Edit the DNS table on the master to include the domain name for the IP address of 192.168.0.25.

Answer: C

NEW QUESTION # 50
You have just created a replication slave from a backup of the master made with mysqldump:

You try to log in to the slave with the application user, but fail as follows:

The login works on the master.
Which two changes to the process can fix the issue?

A. After the restore, log in to the database and execute FLUSH PRIVILEGES.
B. Use the --grants option to include GRANT statements in the dump.
C. Add a second dump for the 'mysql' database; --all-databases does not include it.
D. Use the --flush-privileges with mysqldump.

Answer: C

NEW QUESTION # 51
Exhibit:

What does the possible_keys column in this output denote?

A. if there are any indexes that may be used to solve this query
B. whether there are any indexes on the tables that you are querying
C. if it is possible for you to include any indexes in your query
D. whether there are any indexes in your query

Answer: C

NEW QUESTION # 52
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 allow for point-in-time recovery on the slave
B. to prevent schema changes from propagating to the slave before they are validated
C. to allow the remaining events to be processed on the slave while not receiving new events from the master
D. to allow a backup to be created under reduced load
E. to prevent any transaction experiencing a deadlock

Answer: A,D

NEW QUESTION # 53
Force Majeure is a catastrophic failure on a major level of the database operation. Regular backups are key to helping avoid data loss in such situations.
Which two other steps can help avoid data loss in a major catastrophe?

A. Keep software updated to the latest version.
B. Implement a failover strategy to another geographic location.
C. Use on-site network-attached storage to separate service from data.
D. Create a master-master pair for each service.
E. Use RAID 10 storage for data.
F. Have a second data centre in a different region or country.

Answer: B,F

NEW QUESTION # 54
You created a backup of the world database with this command:
shell> mysqldump --opt world > dump.sql
Which two will import the data from dump.sql?

A. shell> mysql test < dump.sql
B. shell> mysqladmin recover test dump.sql
C. mysql>USE test; mysql>SOURCE dump.sql;
D. mysql> USE test; mysql> LOAD DATA INFILE `dump.sql';
E. shell> mysqlimport test dump.sql

Answer: D,E

NEW QUESTION # 55
Consider these global status variables:

Which two conclusions can be made from the output?

A. There are 140 Performance Schema threads at the time of the output.
B. There are 510 connections to MySQL at the time of the output.
C. The thread cache has been configured with thread_cache_sizeset to at least 6.
D. All max_connectionswere in use at 2018-03-22 14:54:06
E. There are more connections being idle than executing queries.

Answer: B,E

NEW QUESTION # 56
You have created a new user with this statement:
CREATE USER `erika'@'localhost' IDENTIFIED BY `first#1Pass' PASSWORD EXPIRE; What is the outcome?

A. When `erika'@'localhost' tries to log in with the MySQL command-line client, the user will be permitted to log in but will not be able to issue ant statements until the user changes the password.
B. When `erika'@'localhost' tries to log in with the MySQL command-line client, the user will have to change the password before seeing the mysql> prompt.
C. You receive a syntax error that indicates that you cannot set a password and expire it at the same time.
D. When `erika'@'localhost' tries to log in with the MySQL command-line client, the user will not be permitted to log in because the password is expired.

Answer: A

Explanation:
mysql> CREATE USER 'erika'@'localhost' IDENTIFIED BY 'first#1Pass' PASSWORD EXPIRE; mysql -u erika -pfirst#1Pass -hlocalhost mysql> use db1; ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> show variables;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

NEW QUESTION # 57
While attempting to set up a new replication slave on host '192.168.0.25' with the user 'replication', you encounter this error:

What should you do to resolve this error?

A. Add the user [email protected] with the correct password to the slave.
B. Edit the my.ini file on the slave so that the master-host variable is equal to the IP address of the master, and restart the slave.
C. Add the user [email protected] with the correct password to the master.
D. Edit the DNS table on the master to include the domain name for the IP address of 192.168.0.25.

Answer: C

NEW QUESTION # 58
Which two methods accurately monitor the size of your total database size over time?

A. monitoring the information_schemA.TABLES table
B. monitoring cumulative Innodb_page_size increase
C. monitoring the innodb_redo_log_size variable
D. monitoring datadir size in the operating system
E. monitoring the performance_schema_hosts_size variable
F. monitoring the Innodb_rows_inserted status variable

Answer: A,D

NEW QUESTION # 59
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 STATUS indicates 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 MASTER_DELAY=0; START SLAVE;
B. STOP SLAVE; SET GLOBAL master_delay=0; START SLAVE;
C. STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; RELAY_LOG_FILE
'hostname-relay-bin.00004', RELAY_LOG_POS = 1383;
D. STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383;

Answer: A

NEW QUESTION # 60
The 'applicationdb' is using InnoDB and consuming a large amount of file system space. You have a /backup partition available on NFS where backups are stored.
You investigate and gather this information:

Three tables are stored in the InnoDB shared tablespace and the details are as follows:
* The table data_currenthas 1,000,000 rows.
* The table data_reports has 1,500,000 rows.
* The table data_archivehas 4,500,000 rows.

You attempt to free space from ibdata1by taking a mysqldump of the data_archivetable and storing it on your backup partition.

Unfortunately, this action does not free any actual disk space back to the file system and the server disk space is running out.
Which set of actions will allow you to free disk space back to the file system?

A. Enable compression on the table, causing InnoDB to release unused pages on disk to the file system:
B. Take a backup, stop the server, remove the data files, and restore the backup:
C. Set the server to use its own tablespace, and then alter the table so that data is moved from the shared tablespace to its own:
D. Execute OPTIMIZE TABLEso that the InnoDB engine frees unused pages on disk back to the file system:

Answer: A

NEW QUESTION # 61
A crucial database, `db_prod', just disappeared from your production MySQL instance. In reviewing the available MySQL logs (General, Audit, or Slow) and your own application-level logs, you identified this command from a customer facing application:
SELECT id FROM users WHERE login='payback!';DROP DATABASE db_prod;' Which three methods could have been used to prevent this SQL injection attack from happening?

A. removing any remaining anonymous accounts from your MySQL instance
B. using SSL/TLS on your outward facing web servers (https://) to encrypt all user sessions
C. writing your client code to properly escape all user input
D. using a hashing or encryption method to secure all user passwords in your MySQL tables
E. giving limited privileges to accounts used by application servers to interact with their backing databases
F. changing all passwords for the MySQL account `root'@'%' immediately after losing an employee who knew the current password
G. validating all user input before sending it to the database server

Answer: A,D,F

NEW QUESTION # 62
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? (Choose two.)