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Oracle 1z1-908 (MySQL 8.0 Database Administrator) Exam is a certification exam designed to test the knowledge and skills of individuals who work with MySQL 8.0 databases. 1Z0-908 exam is intended for database administrators, developers, and other IT professionals who work with MySQL databases on a regular basis. Candidates who pass the exam will be certified as MySQL 8.0 Database Administrators and will have demonstrated their proficiency in the installation, configuration, optimization, and maintenance of MySQL 8.0 databases.
Oracle 1Z0-908 exam is designed to test the knowledge and skills of individuals who aspire to become a MySQL 8.0 database administrator. MySQL 8.0 Database Administrator certification exam is offered by Oracle, a global technology company that specializes in developing enterprise software products and cloud-based services. 1Z0-908 exam covers a wide range of topics related to MySQL 8.0 database administration, including installation, configuration, management, and optimization.
NEW QUESTION # 31
You want to check the values of the sort_buffer_sizesession variables of all existing connections.
Which performance_schematable can you query?
- A. user_variables_by_thread
- B. variables_by_thread
- C. session_variables
- D. global_variables
Answer: C
Explanation:
Explanation/Reference: https://dev.mysql.com/worklog/task/?id=6629
NEW QUESTION # 32
Examine the modified output:
Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)
- A. The parallel slave threads are experiencing lock contention.
- 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 master is producing a large volume of events in parallel but the slave is processing them serially.
- E. The master is most probably too busy to transmit data and the slave needs to wait for more data.
Answer: B,D
NEW QUESTION # 33
Which three statements are true about MySQL replication? (Choose three.)
- A. Each instance in a replication topology must have a unique server ID.
- B. A replication user must have the SELECT privilege for all tables that need to be replicated.
- C. Replication can use only TCP/IP connections.
- D. Any instance can have multiple slaves, but it can have only one master.
- E. Binary logging must be enabled on the master in order to replicate to other instances.
- F. Each slave must have its own MySQL user for replication.
- G. Binary logs contain only transactions originating from a single MySQL instance.
Answer: A,B,E
NEW QUESTION # 34
You execute this command:
shell> mysqlpump --exclude-databases=% --users
Which statement is true?
- A. It creates a logical backup of all MySQL user accounts.
- B. It creates a logical backup of only the usersdatabase.
- C. It creates a logical backup of all metadata, but contains no table data.
- D. It returns an error because the mysqldumpcommand should have been used.
Answer: C
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-5.7-en/mysqlpump.html
NEW QUESTION # 35
You have an installation of MySQL 8 on Oracle Linux.
Consider the outputs:
Which statement is true about disk temporary tables for this installation?
- A. Temporary tables will use the InnoDB temporary tablespace located in datadir.
- B. Temporary tables are created in tmpdir only after they reach tmp_tabie_size.
- C. Only internal temporary tables from the optimizer will be created in tmpdir.
- D. Temporary tables are created in tmpdir only if configured to use MyISAM.
- E. Temporary tables will use the InnoDB temporary tablespace located in /tmp.
Answer: C
NEW QUESTION # 36
A MySQL server is monitored using MySQL Enterprise Monitor's agentless installation.
Which three features are available with this installation method? (Choose three.)
- A. operating system memory utilization
- B. security-related advisor warnings
- C. MySQL Query Analysis data
- D. MySQL Replication monitoring
- E. disk usage and disk characteristics including disk advisors warnings
- F. CPU utilization
- G. network-related information and network characteristics
Answer: B,C,E
NEW QUESTION # 37
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. *.sdifiles
- B. ib_logfile*files
- C. *.CSMfiles
- D. *.ibdfiles
- E. ibbackupfiles
Answer: B,D
Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/mysql-backup-excerpt/5.7/en/innodb-backup.html
NEW QUESTION # 38
Examine these statements, which execute successfully:
TRUNCATE test; BEGIN;
INSERT INTO test(id, name) VALUES(1, "Hello"); ROLLBACK;
SELECT id FROM test;
Which three storage engines would return a nonempty recordset for the test table when executing the statements? (Choose three.)
- A. InnopB
- B. MEMORY
- C. NDB
- D. ARCHIVE
- E. MyISAM
- F. BLACKHOLE
Answer: C,E,F
NEW QUESTION # 39
How can mysql_multi be configured to allow MySQL instances to use the same port number?
- A. The instances use different socket names.
- B. The instances use different user accounts unique to each instance.
- C. The instances listen on different IP addresses.
- D. The instances have appropriate net masks set.
Answer: C
NEW QUESTION # 40
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. Start mysqld again using the --upgrade=FORCE option.
- C. Go to the <datadir>/mysql directory and execute: myisamchk --update-state columns_priv event proc proxies_priv tables_priv.
- D. Execute: mysqlcheck --check-upgrade mysql columns_priv event proc proxies_priv tables_priv.
- E. Execute: mysqlcheck --repair mysql columns_priv event proc proxies_priv tables_priv.
Answer: B
NEW QUESTION # 41
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 non-active binary logs are removed from the master.
- B. All details regarding deleted logs and master metadata are captured in the output file.
- C. All databases are backed up to the output file.
- D. All binary logs are deleted from the master.
- E. All databases, excluding master metadata, are backed up to the output file.
- F. All binary logs are backed up and then deleted.
Answer: D,E
NEW QUESTION # 42
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. ib_logfile* files
- B. *.CSM files
- C. *.sdi files
- D. ibbackup files
- E. *.ibd files
Answer: A,E
NEW QUESTION # 43
Which three are characteristics of a newly created role? (Choose three.)
- A. It can be granted to user accounts.
- B. It can be protected with a password.
- C. It is stored in the mysql.role table.
- D. It can be renamed using the RENAME ROLE statement.
- E. It is created as a locked account.
- F. It can be dropped using the DROP ROLE statement.
Answer: A,B,F
NEW QUESTION # 44
You want to dump all databases with names that start with "db".
Which command will achieve this?
- A. mysqlpump > all_db_backup.sql
- B. mysqlpump --include-tables=db.% --result-file=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: C
NEW QUESTION # 45
Which two are true about binary logs used in asynchronous replication? (Choose two.)
- A. They are pulled from the master to the slave.
- B. They contain events that describe database changes on the master.
- C. They contain events that describe only administrative commands run on the master.
- D. They contain events that describe all queries run on the master.
- E. They are pushed from the master to the slave.
Answer: B,E
NEW QUESTION # 46
Examine this command and output:
Which two statements are true? (Choose two.)
- A. The lock is an intentional lock.
- B. The lock is an exclusive lock.
- C. The lock is a shared lock.
- D. The lock is at the metadata object level.
- E. The lock is a row-level lock.
- F. The lock is at the table object level.
Answer: B,F
NEW QUESTION # 47
Which statement is true about InnoDB persistent index statistics?
- A. Updating index statistics is an I/O expensive operation.
- B. Increasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.
- C. Index statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.
- D. Setting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.
- E. Execution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.
Answer: A
NEW QUESTION # 48
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. Take a physical backup of the MySQL system.
- C. Take your backup from a slave of the MySQL system.
- D. Use the Clone Plugin to copy the data to another MySQL system.
Answer: A
NEW QUESTION # 49
Which three settings control global buffers shared by all threads on a MySQL server? (Choose three.)
- A. table_open_cache
- B. tmp_table_size
- C. key_buffer_size
- D. sort_buffer_size
- E. read_buffer_size
- F. innodb_buffer_pool_size
Answer: B,C,D
NEW QUESTION # 50
Which two MySQL Shell commands are excluded from the InnoDB Cluster creation procedure? (Choose two.)
- A. cluster.forceQuorumUsingPartitionOf()
- B. dba.checkInstanceConfiguration()
- C. cluster.addInstance()
- D. dba.configureLocalInstance()
- E. cluster.setPrimaryInstance()
- F. dba.createCluster()
- G. dba.configureInstance()
Answer: A,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-shell-8.0-relnotes-en/news-8-0-16.html
NEW QUESTION # 51
Examine this command, which executes successfully:
Which two statements are true? (Choose two.)
- A. A single-file backup is created.
- B. The --backup-dir option holds temporary output, status, and metadata files.
- C. A raw backup is created.
- D. The backup operation will finish only when apply-log is executed.
- E. The backup operation will finish only when backup-and-apply-log is executed.
Answer: B,D
NEW QUESTION # 52
Your MySQL server is running on the Microsoft Windows platform.
Which three local connection protocols are available to you? (Choose three.)
- A. SOCKET
- B. shared memory
- C. TCP/IP
- D. named pipes
- E. UDP
- F. X Protocol
Answer: B,C,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-8.0-en/mysql-installer-workflow.html
NEW QUESTION # 53
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Oracle 1z1-908 Exam consists of 70 multiple-choice questions and has a time limit of 105 minutes. 1Z0-908 exam covers a wide range of topics related to MySQL 8.0 database administration, including database architecture and design, installation and configuration, user and security management, backup and recovery, performance tuning, and troubleshooting. Candidates are required to have a solid understanding of all of these topics in order to pass the exam and earn their certification. Studying for the exam typically involves a combination of self-study materials, online courses, and hands-on experience working with MySQL 8.0 databases.
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