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Oracle 1z1-908 (MySQL 8.0 Database Administrator) certification exam is designed for individuals who have expertise in managing and administering MySQL 8.0 databases. MySQL 8.0 Database Administrator certification validates the skills required to install, configure, and maintain MySQL 8.0 databases efficiently. 1Z0-908 exam covers various topics such as MySQL architecture, backup and recovery, performance tuning, security, and high availability solutions.
NEW QUESTION # 47
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. slow query log
- B. error log
- C. binary log
- D. general query log
- E. audit log
Answer: C
NEW QUESTION # 48
Which two queries are examples of successful SQL injection attacks? (Choose two.)
- A. SELECT user,passwd FROM members
WHERE user = '?';INSERT INTO members('user','passwd') VALUES
('[email protected]','secret');--'; - B. SELECT id, name FROM user WHERE id=23 OR id=32 AND 1=1;
- C. SELECT email,passwd FROM members
WHERE email = 'INSERT INTO members('email','passwd') VALUES ('[email protected]',
'secret');--'; - D. SELECT id, name FROM user WHERE user.id=(SELECT members.id FROM members);
- E. SELECT id, name FROM user WHERE id=23 OR id=32 OR 1=1;
- F. SELECT user, phone FROM customers WHERE name = '\; DROP TABLE users; --';
Answer: B,C
NEW QUESTION # 49
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: C
NEW QUESTION # 50
Examine this command, which executes successfully:
Which statement is true?
- A. Only InnoDB data and log files are backed up.
- B. Only files for MySQL or Its built-in storage engines are backed
- C. Only non-encrypted files are backed up.
- D. The backup includes only data files and their metadata.
- E. Only tables stored in their own tablespaces are backed up.
Answer: A
NEW QUESTION # 51
Which two are use cases of MySQL asynchronous replication? (Choose two.)
- A. It allows backup to be done on the slave without impacting the master.
- B. It guarantees near real-time replication between a master and a slave.
- C. MySQL Enterprise Backup will automatically back up from an available slave.
- D. You can scale reads by adding multiple slaves.
- E. You can scale writes by creating a replicated mesh.
Answer: A,D
NEW QUESTION # 52
Which four are types of information stored in the MySQL data dictionary? (Choose four.)
- A. access control lists
- B. performance metrics
- C. stored procedure definitions
- D. table definitions
- E. view definitions
- F. InnoDB buffer pool LRU management data
- G. server runtime configuration
- H. server configuration rollback
Answer: C,D,E,H
NEW QUESTION # 53
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: C
NEW QUESTION # 54
Examine these statements and output:
Which statement is true?
- A. The user is authorized as the accounting@localhost user.
- B. The user failed to define a username and the connecting username defaulted to ''@'%'.
- C. The user is authorized as the rsmith@localhost user.
- D. The user is authenticated as the anonymous proxy user ''@'%'.
- E. The user is logged in with --user=accounting as an option.
Answer: C
NEW QUESTION # 55
You are upgrading a MySQL instance to the latest 8.0 version.
Examine this output:
You plan to add this parameter to the configuration: innodb_directories='/innodb_extras' Which statement is true?
- A. It is not necessary because innodb_data_home_dir is already defined.
- B. It adds more temporary workspace in addition to the innodb_tmpdir location.
- C. It moves all innodb tablespaces to the /innodb_extras directory to enable a new innodb_data_home_dir to be defined.
- D. It allows scanning of other locations to discover more innodb tablespaces.
- E. It defines all innodb tablespace options relative to a starting parent directory.
Answer: A
NEW QUESTION # 56
Four nodes are configured to use circular replication.
Examine these configuration parameters for each node:
Which statement is true?
- A. Setting transaction_allow_batching to on will improve data consistency.
- B. Increasing slave_parallel_workers will improve high availability.
- C. Each slave thread is responsible for updating a specific database.
- D. Cross-database constraints can cause database inconsistency.
- E. Setting slave_parallel_type=DATABASE won't work for circular replication; it should be set to LOGICAL_CLOCK.
- F. Setting slave_preserve_commit_order to on will improve data consistency.
Answer: F
NEW QUESTION # 57
You are upgrading a MySQL instance to the latest 8.0 version.
Examine this output:
You plan to add this parameter to the configuration:
innodb_directories=’/innodb_extras’
Which statement is true?
- A. It moves all innodb tablespaces to the /innodb_extrasdirectory to enable a new innodb_data_home_dirto be defined.
- B. It is not necessary because innodb_data_home_diris already defined.
- C. It adds more temporary workspace in addition to the innodb_tmpdirlocation.
- D. It allows scanning of other locations to discover more innodb tablespaces.
- E. It defines all innodb tablespace options relative to a starting parent directory.
Answer: B
NEW QUESTION # 58
You have a MySQL system with 500 GB of data that needs frequent backups.
You use a mix of MyISAM and InnoDB storage engines for your dat
a. Examine your backup requirement:
The MySQL system being backed up can never be unavailable or locked to the client applications.
The recovery from the backup must work on any system.
Only 1 hour of data can be lost on recovery of the backup.
Which option fulfills all backup requirements?
- A. Take a logical backup of the MySQL system.
- B. Use the Clone Plugin to copy the data to another MySQL system.
- C. Take your backup from a slave of the MySQL system.
- D. Take a physical backup of the MySQL system.
Answer: A
NEW QUESTION # 59
Examine this command, which executes successfully:
mysqlpump --user=root --password > full_backup.sql
Which two databases will be excluded from this dump? (Choose two.)
- A. mysql
- B. employee
- C. information_schema
- D. world
- E. sys
Answer: C,E
NEW QUESTION # 60
You have semi-synchronous replication configured and working with one slave.
rpl_semi_sync_master_timeout has never been reached.
You find that the disk system on the master has failed and as a result, the data on the master is completely unrecoverable.
Which two statements are true? (Choose two.)
- A. As soon as the incident happens, application can read data from the slave and rely on it to return a full and current set of data.
- B. No committed transactions are lost.
- C. Reads from the slave can return outdated data for some time, until it applies all transactions from its relay log.
- D. The slave automatically identifies that the master is unreachable and performs any required actions so that applications can start using the slave as the new master.
- E. Reads from the slave can return outdated data until the value of the rpi_semi_sync_master_timeout variable is reached.
- F. A small amount of committed transactions may be lost in case they were committed just before the disk failure.
Answer: D,F
NEW QUESTION # 61
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. ibbackup files
- B. ib_logfile* files
- C. *.CSM files
- D. *.sdi files
- E. *.ibd files
Answer: B,E
NEW QUESTION # 62
On examination, your MySQL installation datadir has become recursively world read/write/executable.
What are two major concerns of running an installation with incorrect file privileges? (Choose two.)
- A. Extra startup time would be required for the MySQL server to reset the privileges.
- B. SQL injections could be used to insert bad data into the database.
- C. MySQL binaries could be damaged, deleted, or altered.
- D. Users could overwrite configuration files.
- E. Data files could be deleted.
Answer: A,E
NEW QUESTION # 63
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