Valid 1z1-908 Exam Dumps Ensure you a HIGH SCORE (2024)

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To become certified as a MySQL 8.0 Database Administrator, you must pass the Oracle 1Z0-908 certification exam. 1z1-908 exam is designed to test your knowledge and skills in all areas of MySQL database administration. It's important to note that this certification is not just for database administrators but also for developers and systems administrators who work with MySQL databases.

 

NEW QUESTION # 46
You have configured MySQL Enterprise Monitor to monitor your MySQL server.
Which four features are available? (Choose four.)

• A. starting and stopping the MySQL instance
• B. monitoring of NDB Cluster API nodes
• C. monitoring the availability of the MySQL instance
• D. analyzing executed MySQL queries
• E. deploying the MySQL agent on supported target operating system
• F. creating e-mail alerts and SNMP traps for MySQL warnings
• G. tracing import and export with mysqidump

Answer: C,D,F,G

NEW QUESTION # 47
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 SET TDE = 'ON';
• C. ALTER TABLE t1 WITH ENCRYPTION USING MASTER KEY;
• D. ALTER TABLE t1 ENCRYPTION='Y';

Answer: A

NEW QUESTION # 48
You execute this command:
shell> mysqlpump --exclude-databases=% --users
Which statement is true?

• A. It creates a logical backup of only the users database.
• B. It creates a logical backup of all metadata, but contains no table data.
• C. It creates a logical backup of all MySQL user accounts.
• D. It returns an error because the mysqldump command should have been used.

Answer: B

NEW QUESTION # 49
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 = 4
• C. QN = 1
• D. QN = 2
• E. QN = 5

Answer: C,D

NEW QUESTION # 50
Examine this statement, which executes successfully:

You want to improve the performance of this query:

Which change enables the query to succeed while accessing fewer rows?

• A. ALTER TABLE world.city ADD INDEX (Name);
• B. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
• C. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
• D. ALTER TABLE world.city ADD SPATIAL INDEX (Name);
• E. ALTER TABLE world.city ADD INDEX (Population);
• F. ALTER TABLE world.city ADD FULLTEXT INDEX (Population);

Answer: B

NEW QUESTION # 51
Which two statements are true about the mysqld-auto.cnf file? (Choose two.)

• A. This file is for storing MySQL Server configuration options in ISON format.
• B. It is read and processed at the beginning of startup configuration.
• C. It is read and processed at the end of startup configuration.
• D. This file is for storing MySQL server_uuid values only.
• E. This file is for logging purposes only and is never processed.
• F. It is always updated with changes to system variables.

Answer: C,F

NEW QUESTION # 52
You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTERcommand are correct.
Examine the GTID information from both master and slave:

Which statement is true?

• A. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbbGTIDs in its binary logs.
• B. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-ccccccccccccGTIDs.
• C. Replication will work.
• D. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
• E. Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.

Answer: E

Explanation:
Explanation/Reference: https://bugs.mysql.com/bug.php?id=86643

NEW QUESTION # 53
You must run multiple instances of MySQL Server on a single host.
Which three methods are supported? (Choose three.)

• A. Run mysqld with --datadir defined for each instance.
• B. Run MySQL Server docker containers.
• C. Start mysqld or mysqld_safe using different option files for each instance.
• D. Use system tools to lock each instance to its own CPU.
• E. Use resource groups to lock different instances on separate CPUs.
• F. Use systemd with different settings for each instance.

Answer: A,C,F

NEW QUESTION # 54
You are using mysqlcheck for server maintenance.
Which two statements are true? (Choose two.)

• A. The mysqlcheck --repair --all-databases command can repair an InnoDB corrupted table.
• B. The mysqlcheck --optimize --all-databases command reclaims free space from table files.
• C. The mysqlcheck --check --all-databases command takes table write locks while performing a series of checks.
• D. The mysqlcheck --analyze --all-databases command performs a series of checks to spot eventual table corruptions.
• E. The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.

Answer: D,E

NEW QUESTION # 55
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. Remove the @@GLOBAL.gtid_executed statement from the dump file.
• B. Stop all instances except the primary read/write master instance and run the restore.
• C. Create the backup by using the --set-gtid-purged=OFF option.
• D. Remove the group replication plugin from each instance before restoring.
• E. Remove the @@GLOBAL.gtid_purged statement from the dump file.
• F. Restore using the --set-gtid-purged=OFF option.

Answer: C,E

NEW QUESTION # 56
Your my.cnf file contains these settings:

You want to log queries that looked at a minimum of 5000 records and either took longer than 5 seconds to run or did not use indexes.
Which contains all the settings that you need to add to or modify the slow log configuration?

• A. long_query_time=5
  log_throttle_queries_not_using_indexes=5
• B. log_throttle_queries_not_using_indexes=5
  min_examined_ row_limit=5000
• C. long_query_time=5
  min_examined_row_limit=5000
• D. min_examined_row_limit=5000
• E. long_query_time=5
• F. long_query_time=5
  log_throttle_queries_not_using_indexes=5
  min_examined_row_limit=5000
• G. log_throttle_queries_not_using_indexes=5

Answer: B

NEW QUESTION # 57
The data in this instance is transient; no backup or replication will be required. It is currently under performing.
* The database size is static and including indexes is 19G.
* Total system memory is 32G.
After profiling the system, you highlight these MySQL status and global variables:

The OS metrics indicate that disk is a bottleneck.
Other variables retain their default values.
Which three changes will provide the most benefit to the instance? (Choose three.)

• A. innodb_flush_log_at_trx_commit=1
• B. buffer_pool_size=24G
• C. innodb_undo_directory=/dev/shm
• D. innodb_log_file_size=1G
• E. sync_binlog=0
• F. innodb_doublewrite=0
• G. max_connections=10000

Answer: A,D,G

Explanation:
Explanation/Reference: https://aws.amazon.com/blogs/database/best-practices-for-configuring-parameters-for-amazon- rds-for-mysql-part-1-parameters-related-to-performance/

NEW QUESTION # 58
An attempt to recover an InnoDB Cluster fails.
Examine this set of messages and responses:
host3:3377 ssl JS > dba.rebootClusterFromCompleteOutage() Reconfiguring the default cluster from complete outage...
The instance 'host1:3377'' was part of the cluster configuration. Would you like to rejoin it to the cluster? [y/N]: y The instance 'host2:3377' was part of the cluster configuration. Would you like to rejoin it to the cluster? [y/N]: y Dba.rebootClusterFromCompleteOutage: The active session instance isn't the most updated in comparison with the ONLINE instances of the Cluster's metadat a. Please use the most up to date instance: 'host1:3377'. (RuntimeError) Which statement is true?

• A. It is possible to determine the most up-to-date instance by comparing different global transaction identifier (GTID) sets with GTID_SUBSET(set1,set2).
• B. The instance deployed on host3 must be rebuilt with a backup from the primary instance.
• C. The cluster is running and there is at least one ONLINE instance.
• D. The instance deployed on host3 must be synchronized from a donor deployed on host1 by using the command cluster.addInstance('host1:3377').
• E. The active session instance is invalid and must be re-created by using the command shell.connect ('host3:3377').

Answer: D

NEW QUESTION # 59
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. MySQL binaries could be damaged, deleted, or altered.
• B. Data files could be deleted.
• C. Users could overwrite configuration files.
• D. Extra startup time would be required for the MySQL server to reset the privileges.
• E. SQL injections could be used to insert bad data into the database.

Answer: B,D

NEW QUESTION # 60
You are using an existing server with a new configuration. MySQL Server fails to start.
Examine this snapshot of the error log:

Which action would allow the server to start?

• A. First run mysqld --initialize to refresh the Size of ib_logfile.
• B. Remove ib_logfile0 and ib_logfile1 files from the file system.
• C. Create a new ib_logfile0 file of size 26214400.
• D. Execute mysqladmin flush-logs.

Answer: A

NEW QUESTION # 61
Which step or set of steps can be used to rotate the error log?

• A. Rename the error log file on disk, and then execute FLUSH ERROR LOGS.
• B. Execute SET GLOBAL log_error = ‘<new error log file>’.
• C. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
• D. Execute SET GLOBAL expire_logs_days=0to enforce a log rotation.

Answer: A

Explanation:
Explanation/Reference: https://blog.pythian.com/mysql-log-rotation/

NEW QUESTION # 62
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Oracle 1Z0-908 Certification will strengthen your knowledge and skills by introducing you to a wide variety of important database features, functions, and tasks. Oracle Database certification trains you on how to perform complex, hands-on activities through study, labs, and practice. This certification will help you gain a better understanding and experience with Oracle RAC and Grid Infrastructure. After gaining this certification you will be able to install, maintain, tune, and recover RAC databases, Clusterware, and ASM environments. if you are unsure that which is the correct option, mark the most suitable option as your answer so that any question should not be left unanswered in 1Z0-908 exam dumps pdf.

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