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NEW QUESTION 45
Which two statements are true about using backups of the binary log? (Choose two.)
- A. Multiple binary logs can be applied in parallel for faster data restoration.
- B. Binary logs can always be used to unapply unwanted schema changes.
- C. They allow for point-in-time recovery of the data.
- D. Binary logs are relatively small, and therefore, excellent for long-term storage and disaster recovery.
- E. Multiple binary logs can be used to restore data.
Answer: B,C
NEW QUESTION 46
You wish to store the username and password for a client connection to MySQL server in a file on a local file system.
Which is the best way to encrypt the file?
- A. Use a text editor to create a new defaults file and encrypt it from Linux prompt.
- B. Use mysql_secure_installation to encrypt stored login credentials.
- C. Use mysql_config_editor to create an encrypted file.
- D. Use the AES_ENCRYPT() MySQL function on the option file.
Answer: C
NEW QUESTION 47
Your MySQL server is running on the Microsoft Windows platform.
Which three local connection protocols are available to you? (Choose three.)
- A. UDP
- B. X Protocol
- C. shared memory
- D. SOCKET
- E. named pipes
- F. TCP/IP
Answer: C,E,F
NEW QUESTION 48
Examine the modified output:
Seconds_Behind_ Mastervalue is steadily growing.
What are two possible causes? (Choose two.)
- A. The master is most probably too busy to transmit data and the slave needs to wait for more data.
- B. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- C. One or more large tables do not have primary keys.
- D. The parallel slave threads are experiencing lock contention.
- E. The master is producing a large volume of events in parallel but the slave is processing them serially.
Answer: B,E
Explanation:
Explanation
NEW QUESTION 49
You have an InnoDB Cluster configured with three servers.
Examine this command, which executes successfully:
mysqldump -uroot -p -d mydatabase > mydatabase_backup.sql
Due to data loss, the cluster is initialized and a restore is attempted resulting in this error:
ERROR 13176 (HY000) at line 23: Cannot update GTID_PURGED with the Group Replication plugin running Which two actions, either one of which, can fix this error and allow a successful restore of the cluster? (Choose two.)
- A. Create the backup by using the --set-gtid-purged=OFF option.
- B. Remove the @@GLOBAL.gtid_purged statement from the dump file.
- C. Stop all instances except the primary read/write master instance and run the restore.
- D. Remove the group replication plugin from each instance before restoring.
- E. Remove the @@GLOBAL.gtid_executed statement from the dump file.
- F. Restore using the --set-gtid-purged=OFF option.
Answer: A,B
NEW QUESTION 50
Binary log events for the 'mydb1' schema must be copied to a different schema name 'mydb2'.
Which command will do this?
- A. mysqlbinlog --read-from-remote-server --raw | sed 's/mydb1/mydb2/g' | mysql
- B. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
- C. mysqlbinlog --rewrite-db='mydb1->mydb2' | mysql
- D. mysqlbinlog --rewrite-db='mydb1' --rewrite-db='mydb2' | mysql
Answer: A
NEW QUESTION 51
Examine these commands and output:
Which connection ID is holding the metadata lock?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
Answer: D
NEW QUESTION 52
Which step or set of steps can be used to rotate the error log?
- A. Execute SET GLOBAL expire_logs_days=0to enforce a log rotation.
- B. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
- C. Rename the error log file on disk, and then execute FLUSH ERROR LOGS.
- D. Execute SET GLOBAL log_error = ‘<new error log file>’.
Answer: C
Explanation:
Explanation/Reference: https://blog.pythian.com/mysql-log-rotation/
NEW QUESTION 53
A valid raw backup of the shop.customers MyISAM table was taken.
You must restore the table. You begin with these steps:
1. Confirm that secure_file_priv='/var/tmp'
2. mysql> DROP TABLE shop.customers;
3. shell> cp /backup/customers.MY* /var/lib/mysql/shop/
Which two actions are required to complete the restore? (Choose two.)
- A. shell> cp /backup/customers.sdi /var/lib/mysql/shop/
- B. shell> cp /backup/customers.sdi /var/tmp
- C. mysql> IMPORT TABLE FROM /var/tmp/customers.sdi
- D. mysql> IMPORT TABLE FROM /var/lib/mysql/shop/customers.sdi
- E. shell> cp /backup/customers.frm /var/lib/mysql/shop/
- F. mysql> ALTER TABLE shop.customers DISCARD TABLESPACE
- G. mysql> SOURCE '/var/tmp/customers.sdi'
- H. mysql> ALTER TABLE shop.customers IMPORT TABLESPACE
Answer: C,H
NEW QUESTION 54
You want to check the values of the sort_buffer_size session variables of all existing connections.
Which performance_schema table can you query?
- A. variables_by_thread
- B. global_variables
- C. session_variables
- D. user_variables_by_thread
Answer: C
NEW QUESTION 55
Examine this query and output:
Which two statements are true? (Choose two.)
- A. It takes more than 8 milliseconds to sort the rows.
- B. 35 rows from the city table are included in the result.
- C. The query returns exactly 125 rows.
- D. The country table is accessed as the first table, and then joined to the city table.
- E. The optimizer estimates that 51 rows in the country table have Continent = 'Asia'.
Answer: B,E
NEW QUESTION 56
A user wants to connect without entering his or her username and password on the Linux command prompt.
Which three locations can be used to store the user's mysql credentials to satisfy this requirement? (Choose three.)
- A. $HOME/.mysql/auth/login file
- B. $HOME/.my.cnf file
- C. $HOME/.mylogin.cnf file
- D. DATADIR/mysqld-auto.cnf file
- E. $HOME/.mysqlrc file
- F. $MYSQL_HOME/my.cnf file
- G. /etc/my.cnf file
Answer: D,F,G
NEW QUESTION 57
Which three actions are effective in capacity planning? (Choose three.)
- A. buying more RAM
- B. buying more CPU
- C. basing expected growth on an average of the last 3 years
- D. buying more disk
- E. adding circular replication nodes for increased DML capability
- F. monitoring OS resources for patterns
- G. consulting the application team about any future projects and use
- H. upgrading to the latest application version
Answer: C,F,G
NEW QUESTION 58
Examine this command and output:
Which two options will improve the security of the MySQL instance? (Choose two.)
- A. Remove world read privileges from the server-cert.pemcertificate file.
- B. Remove the world read/execute privilege from the accountingdirectory.
- C. Remove world read privileges from the public_key.pemfile.
- D. Change the parent directory owner and group to mysql.
- E. Change the group ownership of the mysqldirectory to the mysqluser group.
- F. Remove group read/write privileges from the private_key.pemfile.
Answer: D,E
NEW QUESTION 59
Examine these commands and output:
Which connection ID is holding the metadata lock?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
Answer: D
NEW QUESTION 60
Which three are characteristics of a newly created role? (Choose three.)
- A. It can be granted to user accounts.
- B. It can be renamed using the RENAME ROLEstatement.
- C. It can be protected with a password.
- D. It is created as a locked account.
- E. It is stored in the mysql.roletable.
- F. It can be dropped using the DROP ROLEstatement.
Answer: A,C,F
Explanation:
Explanation/Reference:
NEW QUESTION 61
User account baduser@hostname on your MySQL instance has been compromised.
Which two commands stop any new connections using the compromised account? (Choose two.)
- A. ALTER USER baduser@hostname IDENTIFIED WITH mysql_no_login;
- B. ALTER USER baduser@hostname MAX_USER_CONNECTIONS 0;
- C. ALTER USER baduser@hostname DEFAULT ROLE NONE;
- D. ALTER USER baduser@hostname PASSWORD DISABLED;
- E. ALTER USER baduser@hostname ACCOUNT LOCK;
Answer: A,E
NEW QUESTION 62
You are using mysqlcheck for server maintenance.
Which two statements are true? (Choose two.)
- A. The mysqlcheck --optimize --all-databases command reclaims free space from table files.
- B. The mysqlcheck --check --all-databases command takes table write locks while performing a series of checks.
- C. The mysqlcheck --repair --all-databases command can repair an InnoDB corrupted table.
- D. The mysqlcheck --analyze --all-databases command performs a series of checks to spot eventual table corruptions.
Section: (none)
Explanation - E. The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.
Answer: D,E
NEW QUESTION 63
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