(Aug-2023) 1z1-908 Exam Dumps Contains FREE Real Quesions from the Actual Exam
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To pass the Oracle 1z1-908 certification exam, candidates need to have a solid understanding of MySQL architecture and be able to perform various administrative tasks, such as managing users and privileges, creating and maintaining backups, optimizing performance, and securing the database.
To prepare for the Oracle 1Z0-908 (MySQL 8.0 Database Administrator) Certification Exam, candidates should have a strong background in database administration and a thorough understanding of the MySQL 8.0 database technology. Oracle offers a range of training courses and study materials to help candidates prepare for the exam, including classroom training, online courses, and study guides.
NEW QUESTION # 65
You made some table definition changes to a schema in your MySQL Server.
Which two statements reflect how MySQL Server handles the table definition changes? (Choose two.)
- A. MySQL keeps InnoDB metadata changes in .sdi files in datadir.
- B. MySQL writes SDI to the binary log for distributed backups.
- C. MySQL Server stores a copy of the serialized data in the InnoDB user tablespace.
- D. MySQL implicitly executes FLUSH TABLES and stores a snapshot backup of the metadata.
- E. The metadata is serialized in JSON format in Serialized Dictionary Information (SDI).
Answer: C,E
NEW QUESTION # 66
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 will shut down to preserve data consistency.
- B. The cluster has built-in high availability and updates group_replication_ip_whitelist to remove the unreachable nodes.
- C. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.
- D. 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.
- E. A manual intervention to force group members to be only the working two instances is required.
Answer: A,B
NEW QUESTION # 67
Where is the default data directory located after installing MySQL using RPM on Oracle Linux 7?
- A. /var/lib/mysql
- B. /usr/mysql
- C. /usr/bin
- D. /etc/my.cnf
- E. /usr
Answer: A
NEW QUESTION # 68
Your MySQL server was upgraded from an earlier major version.
The sales database contains three tables, one of which is the transactions table, which has 4 million rows.
You are running low on disk space on the datadir partition and begin to investigate.
Examine these commands and output:
Which two statements are true? (Choose two.)
- A. Truncating the sales and leads table will free up disk space.
- B. Executing SET GLOBAL innodb_row_format=COMPRESSED and then ALTER TABLE transactions will free up disk space.
- C. Executing ALTER TABLE transactions will enable you to free up disk space.
- D. Truncating the transactions table will free up the most disk space.
- E. The transactions table was created with innodb_file_per_table=OFF.
Answer: B,E
NEW QUESTION # 69
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 MySQL user accounts.
- C. It creates a logical backup of all metadata, but contains no table data.
- D. It returns an error because the mysqldump command should have been used.
Answer: C
NEW QUESTION # 70
Binary log events for the ‘mydb1’ schema must be copied to a different schema name ‘mydb2’.
Which command will do this?
- A. mysqlbinlog --rewrite-db=’mydb1’ --rewrite-db=’mydb2’ | mysql
- B. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
- C. mysqlbinlog --read-from-remote-server --raw | sed ‘s/mydb1/mydb2/g’ | mysql
- D. mysqlbinlog --rewrite-db=’mydb1->mydb2’ | mysql
Answer: C
NEW QUESTION # 71
Which two statements are true about raw binary backups? (Choose two.)
- A. They are converted to a highly compressible binary format.
- B. They are required to obtain FIPS security compliance.
- C. They are faster than logical backups because the process is a simple file or file system copy.
- D. The resulting files are easily human readable.
- E. The data format is identical to how MySQL stores the data on disk.
Answer: D,E
NEW QUESTION # 72
Which three are types of InnoDB tablespaces? (Choose three.)
- A. undo tablespaces
- B. redo tablespaces
- C. schema tablespaces
- D. data tablespaces
- E. encryption tablespaces
- F. temporary table tablespaces
Answer: D,E,F
NEW QUESTION # 73
Which command enables rule-based MySQL Auditing capabilities?
- A. mysql> INSTALL PLUGIN audit_log;
- B. shell> mysqld --initialize --log-raw=audit.log
- C. shell> mysql < audit_log_filter_linux_install.sql
- D. mysql> INSTALL COMPONENT audit_log;
Answer: C
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/mysql-security-excerpt/5.7/en/audit-log-filtering.html
NEW QUESTION # 74
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 a shared lock.
- D. The lock is at the metadata object level.
- E. The lock is at the table object level.
- F. The lock is a row-level lock.
Answer: A,E
NEW QUESTION # 75
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 configures all the cluster nodes based on the information retrieved from the InnoDB cluster metadata server.
- D. MySQL Router is configured based on the information in files in directory_path.
Answer: B
NEW QUESTION # 76
You have replication configured, which consists of one master and one slave on different hosts with an asynchronous replication channel between them.
Your goal is to decrease the amount of data that is transferred between these two hosts.
It is confirmed that the slave instance does not need to have data from the example database.
Which replication filter contributes to your goal?
- A. on slave: --replicate-wild-ignore=example.%
- B. on master: --binlog-ignore-db=example
- C. on slave: --replicate-ignore-db=example
- D. on master: --replicate-ignore-db=example
- E. on slave: --binlog-ignore-db=example
Answer: D
NEW QUESTION # 77
Which three are requirements for a secure MySQL Server environment? (Choose three.)
- A. Restrict the number of OS users that have access at the OS level.
- B. Encrypt the file system to avoid needing exact file-system permissions.
- C. Run MySQL server as the root user to prevent incorrect sudo settings.
- D. Minimize the number of non-MySQL Server-related processes running on the server host.
- E. Keep the entire software stack on one OS host.
- F. Ensure appropriate file system privileges for OS users and groups.
Answer: B,E,F
NEW QUESTION # 78
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. max_connections=10000
- B. innodb_doublewrite=0
- C. buffer_pool_size=24G
- D. innodb_flush_log_at_trx_commit=1
- E. sync_binlog=0
- F. innodb_log_file_size=1G
- G. innodb_undo_directory=/dev/shm
Answer: A,D,F
NEW QUESTION # 79
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. MEMORY
- B. NDB
- C. MyISAM
- D. ARCHIVE
- E. BLACKHOLE
- F. InnopB
Answer: B,C,E
NEW QUESTION # 80
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 has not activated the role.
- B. The DBA needs to execute FLUSH PRIVILEGES.
- C. The statement was blocked by MySQL Firewall.
- D. John needs to reconnect to the database.
Answer: A
NEW QUESTION # 81
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