Oracle 1Z0-908 Premium Exam Engine pdf - Download Free Updated 142 Questions
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To become a certified MySQL 8.0 Database Administrator, candidates are required to pass the Oracle 1Z0-908 exam. 1Z0-908 exam consists of 90 multiple-choice questions and has a duration of 150 minutes. The passing score for the exam is 65%, and the exam fee is $245. 1Z0-908 exam can be taken at any Pearson VUE testing center worldwide.
To prepare for the Oracle 1z1-908 certification exam, candidates can enroll in training courses or use study materials available online. The Oracle website provides a comprehensive list of recommended training courses and study materials that can help candidates prepare for the certification exam. Additionally, candidates can take practice exams to assess their readiness and identify areas that need improvement.
Oracle 1z1-908 certification exam covers a wide range of topics that include MySQL architecture, installation and configuration, backup and recovery, security management, performance tuning, and high availability. 1Z0-908 exam is designed to test the candidate's ability to manage and administer MySQL databases efficiently and effectively. 1Z0-908 exam consists of multiple-choice questions and performance-based scenarios that test the candidate's practical skills.
NEW QUESTION # 69
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. modifying SQL statement dynamically with substitutions
- C. blocking of potential threats by configuring pre-approved whitelists
- D. provides stateless firewall access to TCP/3306
- E. automatic locking of user accounts who break your firewall
Answer: A,C
NEW QUESTION # 70
Examine this command and output:
Which two statements are true? (Choose two.)
- A. The lock is an exclusive lock.
- B. The lock is an intentional lock.
- C. The lock is at the metadata object level.
- D. The lock is at the table object level.
- E. The lock is a row-level lock.
- F. The lock is a shared lock.
Answer: A,D
NEW QUESTION # 71
Which three statements are true about MySQL replication? (Choose three.)
- A. Replication can use only TCP/IP connections.
- B. Each instance in a replication topology must have a unique server ID.
- C. Binary logs contain only transactions originating from a single MySQL instance.
- D. A replication user must have the SELECT privilege for all tables that need to be replicated.
- E. Each slave must have its own MySQL user for replication.
- F. Any instance can have multiple slaves, but it can have only one master.
- G. Binary logging must be enabled on the master in order to replicate to other instances.
Answer: B,D,G
NEW QUESTION # 72
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 adds more temporary workspace in addition to the innodb_tmpdirlocation.
- C. It is not necessary because innodb_data_home_diris already defined.
- D. It defines all innodb tablespace options relative to a starting parent directory.
- E. It allows scanning of other locations to discover more innodb tablespaces.
Answer: C
NEW QUESTION # 73
There are five MySQL instances configured with a working group replication.
Examine the output of the group members:
Which two statements are true about network partitioning in the cluster? (Choose two.)
- A. The cluster has built-in high availability and updates group_replication_ip_whitelist to remove the unreachable nodes.
- B. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.
- C. There could be both a 2 node and 3 node group replication still running, so shutting down group replication and diagnosing the issue is recommended.
- D. A manual intervention to force group members to be only the working two instances is required.
- E. The cluster will shut down to preserve data consistency.
Answer: A,E
NEW QUESTION # 74
Which two statements are true about MySQL server multi-source replication? (Choose two.)
- A. It does not attempt to detect or resolve replication conflicts.
- B. It needs to be re-instanced after a crash to maintain consistency.
- C. It must use GTID replication.
- D. It uses only time-based replication conflict resolution.
- E. It is not compatible with auto-positioning.
- F. It relies on relay_log_recovery for resilient operations.
Answer: C,D
NEW QUESTION # 75
Examine this query and its output:
Which two statements are true? (Choose two.)
- A. User bob had the largest total time waiting for locks.
- B. The root user had the largest single wait time.
- C. The app user had the highest total number of rows read from storage engines.
- D. The root user had the largest number of modified rows for a SELECT statement.
- E. User bob had a significantly higher ratio of SELECT + INSERT statements to QUIT than both app and root users.
Answer: C,E
NEW QUESTION # 76
You are considering using file-system snapshots to back up MySQL.
Which three statements are true? (Choose three.)
- A. They work best for transaction storage engines that can perform their own recovery when restored.
- B. They do not back up views, stored procedures, or configuration files.
- C. They allow direct copying of table rows with operating system copy commands.
- D. They take roughly twice as long as logical backups.
- E. There is a slight performance cost while the snapshot is active.
- F. They do not use additional disk space.
- G. The backup window is almost zero from the perspective of the application.
Answer: A,B,F
NEW QUESTION # 77
Your MySQL environment has asynchronous position based-replication with one master and one slave.
The slave instance had a disk I/O problem, so it was stopped.
You determined that the slave relay log files were corrupted and unusable, but no other files are damaged.
You restart MySQL Server.
How can replication be restored?
- A. The relay logs from the master should be used to replace the corrupted relay logs.
- B. The slave relay logs should be deleted; execute CHANGE MASTER to adjust the replication relay log file name, then issue start SLAVE;
- C. The slave needs to be restored from backup.
- D. The slave relay logs should be deleted; then execute START SLAVE;
Answer: A
NEW QUESTION # 78
Binary log events for the 'mydb1' schema must be copied to a different schema name 'mydb2'.
Which command will do this?
- A. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
- B. mysqlbinlog --rewrite-db='mydb1' --rewrite-db='mydb2' | mysql
- C. mysqlbinlog --rewrite-db='mydb1->mydb2' | mysql
- D. mysqlbinlog --read-from-remote-server --raw | sed 's/mydb1/mydb2/g' | mysql
Answer: D
NEW QUESTION # 79
Which two are true about binary logs used in asynchronous replication? (Choose two.)
- A. They contain events that describe database changes on the master.
- B. They contain events that describe only administrative commands run on the master.
- C. They are pushed from the master to the slave.
- D. They contain events that describe all queries run on the master.
- E. They are pulled from the master to the slave.
Answer: A,C
Explanation:
Explanation/Reference: https://www.oracle.com/technetwork/community/developer-day/mysql-replication-presentation-
485890.pdf (14)
NEW QUESTION # 80
Which four connection methods can MySQL clients specify with the --protocol option when connecting to a MySQL server? (Choose four.)
- A. TCP
- B. PIPE
- C. IPv4
- D. SOCKET
- E. MEMORY
- F. DIRECT
- G. FILE
- H. IPv6
Answer: A,B,D,E
NEW QUESTION # 81
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. *.CSMfiles
- B. *.sdifiles
- C. ibbackupfiles
- D. ib_logfile*files
- E. *.ibdfiles
Answer: D,E
Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/mysql-backup-excerpt/5.7/en/innodb-backup.html
NEW QUESTION # 82
Examine this statement, which executes successfully:
Now examine this query:
Which two statements can do this? (Choose two.)
- A. ALTER TABLE employees -
ADD INDEX ((MONTH(birth_date))); - B. ALTER TABLE employees -
ADD INDEX (birth_date DESC); - C. ALTER TABLE employees -
ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (MONTH(birth_date)) VIRTUAL NOT NULL, ADD INDEX (birth_month); - D. ALTER TABLE employees -
ADD INDEX ((CAST(birth_date->>'$.month' AS unsigned))); - E. ALTER TABLE employees -
ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (birth_date->>'$.month') VIRTUAL NOT NULL, ADD INDEX (birth_month); - F. ALTER TABLE employees -
ADD INDEX (birth_date);
Answer: B,E
NEW QUESTION # 83
Your MySQL server is running on the Microsoft Windows platform.
Which three local connection protocols are available to you? (Choose three.)
- A. UDP
- B. X Protocol
- C. TCP/IP
- D. SOCKET
- E. named pipes
- F. shared memory
Answer: C,E,F
NEW QUESTION # 84
The mysqld instance has the connection control plugin enabled with these settings:
connection_control_min_connection_delay=1000 connection_control_max_connection_delay=2000 The minimum and maximum delays need to be increased to 3000 and 5000, respectively.
A command is executed:
mysql> SET GLOBAL connection_control_min_connection_delay=3000;
What is the result?
- A. Only the minimum connection value is increased to 3000.
- B. The minimum connection value is changed to 2000.
- C. An error is returned.
- D. The minimum value increases to 3000 and the maximum value increases to 4000.
Answer: A
NEW QUESTION # 85
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. John needs to reconnect to the database.
- B. The statement was blocked by MySQL Firewall.
- C. The DBA needs to execute FLUSH PRIVILEGES.
- D. John has not activated the role.
Answer: D
NEW QUESTION # 86
Which command enables rule-based MySQL Auditing capabilities?
- A. shell> mysqld --initialize --log-raw=audit.log
- B. mysql> INSTALL COMPONENT audit_log;
- C. mysql> INSTALL PLUGIN audit_log;
- D. shell> mysql < audit_log_filter_linux_install.sql
Answer: D
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/mysql-security-excerpt/5.7/en/audit-log-filtering.html
NEW QUESTION # 87
Which three requirements must be enabled for group replication? (Choose three.)
- A. primary key or primary key equivalent on every table
- B. replication filters
- C. binary log MIXED format
- D. binary log ROW format
- E. binary log checksum
- F. semi-sync replication plugin
- G. slave updates logging
Answer: A,C,F
NEW QUESTION # 88
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