[Mar 01, 2024] Get Up-To-Date Real Exam Questions for 1Z0-908 with New Materials
Updated 1Z0-908 Certification Exam Sample Questions
The 1z1-908 exam covers a wide range of topics, including MySQL architecture, installation and configuration, security, backup and recovery, performance tuning, and high availability. Candidates are expected to have a deep understanding of these topics and be able to apply this knowledge in real-world scenarios. 1Z0-908 exam consists of 70 multiple-choice questions and must be completed within 105 minutes.
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.
NEW QUESTION # 48
Which two tools are available to monitor the global status of InnoDB locking? (Choose two.)
- A. SHOW ENGINE INNODB STATUS;
- B. SHOW STATUS;
- C. INFORMATION_SCHEMA.STATISTICS
- D. SHOW TABLE STATUS;
- E. INFORMATION_SCHEMA.INNODB_TABLESTATS
- F. INFORMATION_SCHEMA.INNODB_METRICS
Answer: C,E
NEW QUESTION # 49
Which three are characteristics of a newly created role? (Choose three.)
- A. It can be granted to user accounts.
- B. It is stored in the mysql.roletable.
- C. It can be renamed using the RENAME ROLEstatement.
- D. It can be protected with a password.
- E. It can be dropped using the DROP ROLEstatement.
- F. It is created as a locked account.
Answer: A,D,E
Explanation:
Explanation/Reference:
NEW QUESTION # 50
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. --user=admin
- B. --protocol=UDP
- C. --host=192.0.2.1
- D. --protocol=pipe
- E. --port=3306
- F. --shared-memory-base-name=world
- G. --socket=/tmp/mysql.sock
- H. --password
- I. --database=world
Answer: C,D,F,H
NEW QUESTION # 51
Examine this SQL statement:
Which set of privileges will allow Tom to execute this SQL statement?
- A. GRANT UPDATE ON 'world'.'city' TO 'tom'@'%'; GRANT SELECT ON 'world'.'country' TO 'tom'@'%';
- B. GRANT ALL PRIVILEGES ON 'world'.'city' TO 'tom'@'%';
GRANT SELECT ('code') ON 'world'.'country' TO 'tom'@'%'; - C. GRANT UPDATE ON 'world'.'city' TO 'tom'@'%'; GRANT SELECT ON 'world'.* TO 'tom'@'%';
- D. GRANT UPDATE ON 'world'.* TO 'tom'@'%';
GRANT ALL PRIVILEGES ON 'world'.'country' TO 'tom'@'%';
Answer: A
NEW QUESTION # 52
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 metadata. Please use the most up to date instance: ‘host1:3377’. (RuntimeError) Which statement is true?
- A. The active session instance is invalid and must be re-created by using the command shell.connect (‘host3:3377’).
- B. The instance deployed on host3must be rebuilt with a backup from the primary instance.
- C. It is possible to determine the most up-to-date instance by comparing different global transaction identifier (GTID) sets with GTID_SUBSET(set1,set2).
- D. The instance deployed on host3must be synchronized from a donor deployed on host1by using the command cluster.addInstance(‘host1:3377’).
- E. The cluster is running and there is at least one ONLINEinstance.
Answer: D
NEW QUESTION # 53
Which two are contained in the InnoDB system tablespace (ibdata1) by default? (Chose two.)
- A. user privileges
- B. table data
- C. InnoDB Data Dictionary
- D. doublewrite buffer
- E. change buffer
- F. primary indexes
Answer: C,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-5.7-en/innodb-system-tablespace.html
NEW QUESTION # 54
Examine this command, which executes successfully:
$ mysqlrouter --bootstrap user@hostname:port --directory=directory_path Which activity is performed?
- A. MySQL Router is restarted.
- B. MySQL Router configures itself based on the information retrieved from the InnoDB cluster metadata server.
- C. MySQL Router is configured based on the information in files in directory_path.
- D. MySQL Router configures all the cluster nodes based on the information retrieved from the InnoDB cluster metadata server.
Answer: B
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/mysql-router/8.0/en/mysqlrouter.html
NEW QUESTION # 55
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 binary logs are deleted from the master.
- B. All details regarding deleted logs and master metadata are captured in the output file.
- C. All binary logs are backed up and then deleted.
- D. All non-active binary logs are removed from the master.
- E. All databases, excluding master metadata, are backed up to the output file.
- F. All databases are backed up to the output file.
Answer: A,E
NEW QUESTION # 56
You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTER command are correct. Examine the GTID information from both master and slave:
Which statement is true?
- A. Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.
- B. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-cccccccccccc GTIDs.
- C. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
- D. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.
- E. Replication will work.
Answer: A
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_undo_directory=/dev/shm
- B. buffer_pool_size=24G
- C. innodb_doublewrite=0
- D. innodb_flush_log_at_trx_commit=1
- E. sync_binlog=0
- F. innodb_log_file_size=1G
- G. max_connections=10000
Answer: D,F,G
NEW QUESTION # 58
User account baduser@hostname on your MySQL instance has been compromised.
Which two commands stop any new connections using the compromised account? (Choose two.)
- A. ALTER USER baduser@hostname PASSWORD DISABLED;
- B. ALTER USER baduser@hostname IDENTIFIED WITH mysql_no_login;
- C. ALTER USER baduser@hostname DEFAULT ROLE NONE;
- D. ALTER USER baduser@hostname ACCOUNT LOCK;
- E. ALTER USER baduser@hostname MAX_USER_CONNECTIONS 0;
Answer: B,D
NEW QUESTION # 59
What is the correct syntax for using transparent data encryption with an existing InnoDB table?
- A. ALTER TABLE t1 ENCRYPTION='Y';
- B. ALTER TABLE t1 ADD ENCRYPTED_TABLESPACE = 'Y';
- C. ALTER TABLE t1 WITH ENCRYPTION USING MASTER KEY;
- D. ALTER TABLE t1 SET TDE = 'ON';
Answer: B
NEW QUESTION # 60
Where is the default data directory located after installing MySQL using RPM on Oracle Linux 7?
- A. /etc/my.cnf
- B. /usr
- C. /usr/bin
- D. /var/lib/mysql
- E. /usr/mysql
Answer: D
NEW QUESTION # 61
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 data.
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 your backup from a slave of the MySQL system.
- C. Use the Clone Plugin to copy the data to another MySQL system.
- D. Take a physical backup of the MySQL system.
Answer: A
NEW QUESTION # 62
An existing asynchronous replication setup is running MySQL 8.
Which two steps are a part of implementing GTID replication? (Choose two.)
- A. Execute this on the slave to enable GTID:
RESET SLAVE; START SLAVE GTID_NEXT=AUTOMATIC; - B. Execute this on the slave to enable GTID:
START SLAVE IO_THREAD WITH GTID; - C. Enable GTID by executing this on the master and the slave:
SET GLOBAL GTID_ENABLED=on; - D. Restart MySQL (master and slave) with these options enabled:
--gtid_mode=ON
--log-bin
--log-slave-updates
--enforce-gtid-consistency - E. On the slave, alter the MySQL master connection setting with:
ALTER channel CHANGE MASTER TO MASTER_AUTO_POSITION = 1; - F. On the slave, alter the MySQL master connection setting with:
CHANGE MASTER TO MASTER_AUTO_POSITION = 1;
Answer: D,F
NEW QUESTION # 63
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. systemd found the mysqld service disabled and failed to start it.
- B. MySQL server continued to start up even though another process existed.
- C. systemd waited for 30 seconds before timing out and start up failed.
- D. systemd attempted to start mysqld, found another systemd mysqld process running, and shut it down.
- E. MySQL server was not started due to a problem while executing process 2732.
Answer: D
NEW QUESTION # 64
Examine these statements, which execute successfully:
CREATE ROLE r_world_rd;
GRANT SELECT ON world.* TO r_world_rd;
CREATE USER john IDENTIFIED BY 'P@ssw0rd';
GRANT r_world_rd TO john;
Examine these statements issued by user John:
What is the reason for the error?
- A. The DBA needs to execute FLUSH PRIVILEGES.
- B. John has not activated the role.
- C. The statement was blocked by MySQL Firewall.
- D. John needs to reconnect to the database.
Answer: B
NEW QUESTION # 65
Examine this command, which executes successfully:
Which statement is true?
- A. Only InnoDB data and log files are backed up.
- B. Only tables stored in their own tablespaces are backed up.
- C. Only files for MySQL or Its built-in storage engines are backed
- D. Only non-encrypted files are backed up.
- E. The backup includes only data files and their metadata.
Answer: A
NEW QUESTION # 66
Which two are features of MySQL Enterprise Firewall? (Choose two.)
- A. recording incoming SQL statement to facilitate the creation of a whitelist of permitted commands
- B. automatic locking of user accounts who break your firewall
- C. modifying SQL statement dynamically with substitutions
- D. provides stateless firewall access to TCP/3306
- E. blocking of potential threats by configuring pre-approved whitelists
Answer: A,E
NEW QUESTION # 67
Which statement is true about displaying and retrieving data with MySQL Enterprise Monitor Query Analyzer?
- A. It is possible to export statements included in a graph selection in CSV format.
- B. The Query Analyzer can plot a CPU utilization graph for remote hosts with a MySQL Enterprise Service Manager's built-in Agent installation.
- C. The Query Analyzer graph view range selector can extend to cover the same hour over multiple days.
- D. It is possible to filter a Query Analyzer view graph by database and by table.
Answer: A
NEW QUESTION # 68
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. MySQL binaries could be damaged, deleted, or altered.
- C. Users could overwrite configuration files.
- D. SQL injections could be used to insert bad data into the database.
- E. Data files could be deleted.
Answer: A,E
NEW QUESTION # 69
You recently upgraded your MySQL installation to MySQL 8.0.
Examine this client error:
Which option will allow this client to connect to MySQL Server?
- A. ALTER USER user -
IDENTIFIED WITH mysql_native_password
BY 'password'; - B. [mysqld]
default_authentication_plugin=mysql_native_password - C. [mysqld]
default_authentication_plugin=caching_sha2_password - D. ALTER USER user -
IDENTIFIED WITH caching_sha2_password
BY 'password'; - E. [mysqld]
default_authentication_plugin=sha256_password - F. ALTER USER user -
IDENTIFIED WITH sha256_password -
BY 'password';
Answer: F
NEW QUESTION # 70
You plan to take daily full backups, which include the ndbinfo and sys (internal) databases.
Which command will back up the databases in parallel?
- A. mysqlpump --include-databases=% > full-backup-$(date +%Y%m$d).sql
- B. mysqldump --all-databases > full_backup-$(date +%Y%m%d).sql
- C. mysqlpump --all-databases > full-backup-$(date +%Y%m%d).sql
- D. mysqldump --single-transaction > full-backup-$(date +%Y%m%d).sql
Answer: A
Explanation:
Explanation
https://dev.mysql.com/doc/refman/8.0/en/mysqlpump.html By default --all-databases won't backup ndbinfo schema this can be done via
--include-database=%https://dev.mysql.com/doc/refman/8.0/en/mysqlpump.html#mysqlpump-restrictions
NEW QUESTION # 71
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 archive tables are backed up first, then the transaction tables and redo logs.
- C. The transaction tables are backed up first, then the archive tables and redo logs.
- D. The redo logs are not backed up at all.
- E. The redo logs are backed up only if there are changes showing for the transactions tables.
Answer: E
NEW QUESTION # 72
Examine these statements, which execute successfully:
CREATE ROLE r_world_rd;
GRANT SELECT ON world.* TO r_world_rd;
CREATE USER john IDENTIFIED BY 'P@ssw0rd';
GRANT r_world_rd TO john;
Examine these statements issued by user John:
What is the reason for the error?
- A. The DBA needs to execute FLUSH PRIVILEGES.
- B. John has not activated the role.
- C. The statement was blocked by MySQL Firewall.
- D. John needs to reconnect to the database.
Answer: B
NEW QUESTION # 73
......
Oracle 1z1-908 certification exam is intended for database administrators, system administrators, developers, and IT professionals who work with MySQL 8.0 databases. MySQL 8.0 Database Administrator certification is highly valued by organizations that use MySQL databases and is recognized worldwide as a standard for database administration expertise. Certified professionals can leverage their skills to advance their careers and contribute to the success of their organizations.
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