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NEW QUESTION # 74
t is a non-empty InnoDB table.
Examine these statements, which are executed in one session:
BEGIN;
SELECT * FROM t FOR UPDATE;
Which is true?
- A. If ANALYZE TABLE; is invoked from the same session, it hangs until the transaction is committed or rolled back.
- B. If OPTIMIZE TABLE; is invoked, it will create a table lock on t and force a transaction rollback.
- C. mysqlcheck --analyze --all-databases will execute normally on all tables and return a report.
- D. If OPTIMIZE LOCAL TABLE t; is invoked from another session, it executes normally and returns the status.
Answer: D
NEW QUESTION # 75
Which two statements are true about the mysql_config_editor program? (Choose two.)
- A. It manages the configuration of client programs.
- B. It can move datadir to a new location.
- C. It can be used to create and edit SSL certificates and log locations.
- D. It manages the configuration of user privileges for accessing the server.
- E. It manages the configuration of the MySQL Firewall feature.
- F. It will use [client] options by default unless you provide --login-path.
- G. It provides an interface to change my.cnf files.
Answer: A,F
NEW QUESTION # 76
Examine this list of MySQL data directory binary logs:
binlog.000001
binlog.000002
.....
binlog.000289
binlog.000300
binlog.000301
binlog.index
Now examine this command, which executes successfully:
mysqldump --delete-master-logs --all-databases > /backup/db_backup.sql
Which two are true? (Choose two.)
- A. All databases are backed up to the output file.
- B. All binary logs are backed up and then deleted.
- C. All non-active binary logs are removed from the master.
- D. All databases, excluding master metadata, are backed up to the output file.
- E. All binary logs are deleted from the master.
- F. All details regarding deleted logs and master metadata are captured in the output file.
Answer: D,E
NEW QUESTION # 77
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. Restore using the --set-gtid-purged=OFF option.
- B. Remove the @@GLOBAL.gtid_purged statement from the dump file.
- C. Remove the @@GLOBAL.gtid_executed statement from the dump file.
- D. Create the backup by using the --set-gtid-purged=OFF option.
- E. Remove the group replication plugin from each instance before restoring.
- F. Stop all instances except the primary read/write master instance and run the restore.
Answer: B,D
NEW QUESTION # 78
Examine this query:
What information does this query provide?
- A. total memory used by thread number 10
- B. total memory used across all connections associated with the user on thread number 10
- C. total memory used by the first 10 connections
- D. total memory used by connection number 10
- E. total memory used across all connections associated with the user on connection number 10
- F. total memory used by the first 10 threads
Answer: D
NEW QUESTION # 79
You want to log only the changes made to the database objects and data on the MySQL system.
Which log will do this by default?
- A. error log
- B. general query log
- C. slow query log
- D. binary log
- E. audit log
Answer: D
NEW QUESTION # 80
You want to dump all databases with names that start with "db".
Which command will achieve this?
- A. mysqlpump --include-tables=db.% --result-file=all_db_backup.sql
- B. mysqlpump > all_db_backup.sql
- C. mysqlpump --include-databases=db% --result-file=all_db_backup.sql
- D. mysqlpump --include-databases=db --result-file=all_db_backup.sql
Answer: D
NEW QUESTION # 81
Your MySQL instance is capturing a huge amount of financial transactions every day in the finance database.
Company policy is to create a backup every day.
The main tables being updated are prefixed with transactions-.
These tables are archived into tables that are prefixed with archives- each month. mysqlbackup
--optimistic-busy-tables="^finance\.transactions-.*" backup
Which optimization process best describes what happens with the redo logs?
- A. The redo logs are backed up first, then the transaction and archive tables.
- B. The transaction tables are backed up first, then the archive tables and redo logs.
- C. The redo logs are not backed up at all.
- D. The archive tables are backed up first, then the transaction tables and redo logs.
- E. The redo logs are backed up only if there are changes showing for the transactions tables.
Answer: E
NEW QUESTION # 82
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: E
NEW QUESTION # 83
Which four connection methods can MySQL clients specify with the --protocol option when connecting to a MySQL server? (Choose four.)
- A. FILE
- B. IPv6
- C. DIRECT
- D. PIPE
- E. IPv4
- F. TCP
- G. SOCKET
- H. MEMORY
Answer: D,F,G,H
NEW QUESTION # 84
You have upgraded the MySQL binaries from 5.7.28 to 8.0.18 by using an in-place upgrade.
Examine the message sequence generated during the first start of MySQL 8.0.18:
Which step or set of steps will resolve the errors?
- A. Remove the redo logs. Replace the MySQL binaries with the 5.7.28 binaries. Prepare the tables for upgrade. Upgrade to 8.0.18 again.
- B. Execute: mysqlcheck --check-upgrade mysql columns_priv event proc proxies_priv tables_priv.
- C. Start mysqld again using the --upgrade=FORCE option.
- D. Go to the <datadir>/mysql directory and execute: myisamchk --update-state columns_priv event proc proxies_priv tables_priv.
- E. Execute: mysqlcheck --repair mysql columns_priv event proc proxies_priv tables_priv.
Answer: C
NEW QUESTION # 85
What is the correct syntax for using transparent data encryption with an existing InnoDB table?
- A. ALTER TABLE t1 ADD ENCRYPTED_TABLESPACE = 'Y';
- B. ALTER TABLE t1 ENCRYPTION='Y';
- C. ALTER TABLE t1 WITH ENCRYPTION USING MASTER KEY;
- D. ALTER TABLE t1 SET TDE = 'ON';
Answer: A
NEW QUESTION # 86
Examine this SQL statement:
mysql> GRANT r_read@localhost TO mark WITH ADMIN OPTION;
Which two are true? (Choose two.)
- A. Mark can revoke the r_read@localhost role from another role.
- B. Mark can grant the r_read@localhost role to another user.
- C. ADMIN OPTION allows Mark to drop the role.
- D. Mark must connect from localhost to activate the r_read@localhost role.
- E. Mark can grant the privileges assigned to the r_read@localhost role to another user.
- F. ADMIN OPTION causes the role to be activated by default.
Answer: A,B
Explanation:
Explanation
https://dev.mysql.com/doc/refman/8.0/en/grant.html
NEW QUESTION # 87
Examine this MySQL client command to connect to a remote database:
mysql -h remote.example.org -u root -p --protocol=TCP --ssl-mode=
Which two --ssl-mode values will ensure that an X.509-compliant certificate will be used to establish the SSL/TLS connection to MySQL?
- A. VERIFY_CA
- B. PREFERRED
- C. VERIFY_IDENTITY
- D. REQUIRED
- E. DISABLED
Answer: D
NEW QUESTION # 88
Which two statements are true about MySQL server multi-source replication? (Choose two.)
- A. It relies on relay_log_recovery for resilient operations.
- B. It uses only time-based replication conflict resolution.
- C. It is not compatible with auto-positioning.
- D. It does not attempt to detect or resolve replication conflicts.
- E. It needs to be re-instanced after a crash to maintain consistency.
- F. It must use GTID replication.
Answer: B,F
NEW QUESTION # 89
Examine this parameter setting:
audit_log=FORCE_LOG_PERMANENT
What effect does this have on auditing?
- A. It prevents the audit plugin from being removed from the running server.
- B. It causes the audit log to be created if it does not exist.
- C. It will force the load of the audit plugin even in case of errors at server start.
- D. It prevents the audit log from being removed or rotated.
Answer: A
NEW QUESTION # 90
You are backing up raw InnoDB files by using mysqlbackup.
Which two groups of files will be backed up during a full backup? (Choose two.)
- A. *.CSMfiles
- B. *.ibdfiles
- C. ibbackupfiles
- D. *.sdifiles
- E. ib_logfile*files
Answer: B,E
Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/mysql-backup-excerpt/5.7/en/innodb-backup.html
NEW QUESTION # 91
Examine this statement and output:
You must try to reduce query execution time.
Which two queries should you focus on? (Choose two.)
- A. QN = 3
- B. QN = 2
- C. QN = 4
- D. QN = 1
- E. QN = 5
Answer: B,D
NEW QUESTION # 92
Examine Joe's account:
CREATE USER 'joe'@'%' IDENTIFIED BY '*secret*'
GRANT ALL PRIVILEGES ON *.* TO 'joe'@'%'
All existing connections for joe are killed.
Which two commands will stop joe establishing access to the MySQL instance? (Choose two.)
- A. ALTER USER 'joe'@'%' ACCOUNT LOCK
- B. REVOKE USAGE ON *.* FROM 'joe'@'%'
- C. ALTER USER 'joe'@'%' PASSWORD HISTORY 0
- D. ALTER USER 'joe'@'%' SET password='*invalid*'
- E. REVOKE ALL PRIVILEGES ON *.* FROM 'joe'@'%'
- F. ALTER USER 'joe'@'%' IDENTIFIED BY '*invalid*' PASSWORD EXPIRE
Answer: E,F
NEW QUESTION # 93
Which step or set of steps can be used to rotate the error log?
- A. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
- B. Execute SET GLOBAL log_error = ‘<new error log file>’.
- C. Execute SET GLOBAL expire_logs_days=0to enforce a log rotation.
- D. Rename the error log file on disk, and then execute FLUSH ERROR LOGS.
Answer: D
Explanation:
Explanation/Reference: https://blog.pythian.com/mysql-log-rotation/
NEW QUESTION # 94
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