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Oracle 1Z0-908 certification exam, also known as the MySQL 8.0 Database Administrator exam, is designed for professionals who want to validate their skills and knowledge in the administration of MySQL databases. 1z1-908 exam is intended for individuals who are responsible for managing MySQL databases in various organizations, such as database administrators, system administrators, and developers. Passing 1z1-908 exam is a great way to demonstrate your expertise in administering MySQL databases, as well as to enhance your career prospects.
Oracle 1Z0-908 certification exam is a comprehensive test that covers all aspects of MySQL 8.0 database administration. 1z1-908 exam is divided into several sections, each of which covers a different topic. The sections include MySQL architecture, installation and configuration, security, backup and recovery, performance tuning, and monitoring and troubleshooting.
NEW QUESTION # 56
You have a MySQL client installed on your Linux workstation with a default installation. You have your admin login credentials to connect to a MySQL server running Microsoft Windows on remote host
192.0.2.1:3306. You wish to connect directly to the world database.
Which four options need to be specified to complete this task with a single command? (Choose four.)
- A. --database=world
- B. --socket=/tmp/mysql.sock
- C. --port=3306
- D. --user=admin
- E. --protocol=pipe
- F. --host=192.0.2.1
- G. --protocol=UDP
- H. --shared-memory-base-name=world
- I. --password
Answer: E,F,H,I
NEW QUESTION # 57
Examine this query and output:
Which two statements are true? (Choose two.)
- A. It takes more than 8 milliseconds to sort the rows.
- B. The query returns exactly 125 rows.
- C. The countrytable is accessed as the first table, and then joined to the city table.
- D. 35 rows from the city table are included in the result.
- E. The optimizer estimates that 51 rows in the countrytable have Continent = ‘Asia’.
Answer: D,E
NEW QUESTION # 58
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. 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.
- B. Reads from the slave can return outdated data for some time, until it applies all transactions from its relay log.
- C. 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.
- D. A small amount of committed transactions may be lost in case they were committed just before the disk failure.
- E. Reads from the slave can return outdated data until the value of the rpi_semi_sync_master_timeout variable is reached.
- F. No committed transactions are lost.
Answer: A,D
NEW QUESTION # 59
You have just installed MySQL on Oracle Linux and adjusted your /etc/my.cnf parameters to suit your installation.
Examine the output:
What statement is true about the start attempt?
- A. MySQL server was not started due to a problem while executing process 2732.
- B. systemd waited for 30 seconds before timing out and start up failed.
- C. MySQL server continued to start up even though another process existed.
- D. systemd found the mysqld service disabled and failed to start it.
- E. systemd attempted to start mysqld, found another systemd mysqld process running, and shut it down.
Answer: E
NEW QUESTION # 60
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. information_schema
- B. world
- C. employee
- D. sys
- E. mysql
Answer: A,D
Explanation:
Explanation/Reference: https://mysqlserverteam.com/introducing-mysqlpump/
NEW QUESTION # 61
Which statement is true about displaying and retrieving data with MySQL Enterprise Monitor Query Analyzer?
- A. The Query Analyzer graph view range selector can extend to cover the same hour over multiple days.
- B. It is possible to filter a Query Analyzer view graph by database and by table.
- C. It is possible to export statements included in a graph selection in CSV format.
- D. The Query Analyzer can plot a CPU utilization graph for remote hosts with a MySQL Enterprise Service Manager's built-in Agent installation.
Answer: C
NEW QUESTION # 62
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. Go to the <datadir>/mysql directory and execute: myisamchk --update-state columns_priv event proc proxies_priv tables_priv.
- B. Execute: mysqlcheck --check-upgrade mysql columns_priv event proc proxies_priv tables_priv.
- C. Execute: mysqlcheck --repair mysql columns_priv event proc proxies_priv tables_priv.
- D. 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.
- E. Start mysqld again using the --upgrade=FORCE option.
Answer: E
NEW QUESTION # 63
Examine this partial output for InnoDB Cluster status:
Which statement explains the state of the instance deployed on host2?
- A. It can rejoin the cluster by using the command cluster.addInstance('<user>@host3:3377')
- B. It has been expelled from the cluster because of a transaction error.
- C. It can be recovered from a donor instance on host3 by cloning using the command cluster.rejoinInstance ('<user>@host3:3377')
- D. It can rejoin the cluster by using the command dba.rebootClusterFromCompleteOutage()
- E. It has been removed from the cluster by using the command STOP GROUP_REPLICATION;
Answer: D
NEW QUESTION # 64
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_doublewrite=0
- B. innodb_flush_log_at_trx_commit=1
- C. innodb_log_file_size=1G
- D. innodb_undo_directory=/dev/shm
- E. max_connections=10000
- F. sync_binlog=0
- G. buffer_pool_size=24G
Answer: B,C,E
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 # 65
Which two statements are true about MySQL Enterprise Backup? (Choose two.)
- A. It supports backup of a remote MySQL system.
- B. It supports restoring to a remote MySQL system.
- C. It creates logical backups.
- D. It supports backing up only table structures.
- E. It supports the creation of incremental backups.
- F. It can perform hot or warm backups.
Answer: E,F
NEW QUESTION # 66
Which two are valid uses for binary logs on a MySQL instance? (Choose two.)
- A. replication
- B. audit of all queries
- C. point-in-time recovery
- D. recording the order in which queries are issued
- E. logging the duration and locks for all queries
Answer: C,D
NEW QUESTION # 67
You have just installed MySQL on Oracle Linux and adjusted your /etc/my.cnf parameters to suit your installation.
Examine the output:
What statement is true about the start attempt?
- A. MySQL server was not started due to a problem while executing process 2732.
- B. systemd waited for 30 seconds before timing out and start up failed.
- C. MySQL server continued to start up even though another process existed.
- D. systemd found the mysqld service disabled and failed to start it.
- E. systemd attempted to start mysqld, found another systemd mysqld process running, and shut it down.
Answer: E
NEW QUESTION # 68
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
- B. long_query_time=5
log_throttle_queries_not_using_indexes=5
min_examined_row_limit=5000 - C. min_examined_row_limit=5000
- D. long_query_time=5
min_examined_row_limit=5000 - E. log_throttle_queries_not_using_indexes=5
- F. long_query_time=5
log_throttle_queries_not_using_indexes=5 - G. log_throttle_queries_not_using_indexes=5
min_examined_ row_limit=5000
Answer: G
NEW QUESTION # 69
MySQL programs look for option files in standard locations.
Which method will show the option files and the order in which they are read?
- A. shell> mysqladmin --debug
- B. shell> mysqld --help --verbose
- C. shell> mysql --print-defaults
- D. mysql> SHOW GLOBAL VARIABLES;
Answer: A
NEW QUESTION # 70
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. Use the Clone Plugin to copy the data to another MySQL system.
- B. Take a physical backup of the MySQL system.
- C. Take a logical backup of the MySQL system.
- D. Take your backup from a slave of the MySQL system.
Answer: C
NEW QUESTION # 71
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 # 72
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. *.sdi files
- C. *.CSM files
- D. ib_logfile* files
- E. *.ibd files
Answer: D,E
NEW QUESTION # 73
Which two statements are true about the mysql_config_editor program? (Choose two.)
- A. It manages the configuration of user privileges for accessing the server.
- B. It provides an interface to change my.cnf files.
- C. It manages the configuration of client programs.
- D. It can be used to create and edit SSL certificates and log locations.
- E. It will use [client] options by default unless you provide --login-path.
- F. It manages the configuration of the MySQL Firewall feature.
- G. It can move datadir to a new location.
Answer: C,E
NEW QUESTION # 74
Which three requirements must be enabled for group replication? (Choose three.)
- A. slave updates logging
- B. binary log checksum
- C. replication filters
- D. semi-sync replication plugin
- E. binary log ROW format
- F. primary key or primary key equivalent on every table
- G. binary log MIXED format
Answer: D,F,G
NEW QUESTION # 75
Which two are contained in the InnoDB system tablespace (ibdata1) by default? (Chose two.)
- A. primary indexes
- B. user privileges
- C. table data
- D. doublewrite buffer
- E. InnoDB Data Dictionary
- F. change buffer
Answer: D,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-5.7-en/innodb-system-tablespace.html
NEW QUESTION # 76
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Oracle 1z1-908 (MySQL 8.0 Database Administrator) certification exam is a comprehensive exam that tests the candidate's ability to manage the MySQL database system. It is a valuable certification for database administrators who want to enhance their skills and knowledge or for individuals who want to start their career in database administration. MySQL 8.0 Database Administrator certification is globally recognized and provides an opportunity for career advancement and higher salaries.
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