Easy To Download Oracle 1Z0-908 Exam Dumps Updated 142 Questions [Q79-Q102]

Easy To Download Oracle 1Z0-908 Exam Dumps Updated 142 Questions

New Updated 1Z0-908 Exam Questions 2023

The Oracle 1z1-908 (MySQL 8.0 Database Administrator) certification exam is designed for individuals who have expertise in managing and administering MySQL 8.0 databases. This certification validates the skills required to install, configure, and maintain MySQL 8.0 databases efficiently. The exam covers various topics such as MySQL architecture, backup and recovery, performance tuning, security, and high availability solutions.

The Oracle 1z1-908 exam is an essential certification for anyone who wants to become a MySQL 8.0 Database Administrator. It requires a lot of hard work and dedication, but the rewards are well worth it. With this certification, you can enhance your skills and knowledge, boost your career prospects, and become a valuable asset to any organization.

 

NEW QUESTION # 79
You wish to store the username and password for a client connection to MySQL server in a file on a local file system.
Which is the best way to encrypt the file?

• A. Use mysql_config_editor to create an encrypted file.
• B. Use the AES_ENCRYPT() MySQL function on the option file.
• C. Use mysql_secure_installation to encrypt stored login credentials.
• D. Use a text editor to create a new defaults file and encrypt it from Linux prompt.

Answer: A

NEW QUESTION # 80
Which statement is true about cold backups?

• A. They are backups taken from snapshots of a running database.
• B. They are backups taken from OS copy commands.
• C. They are good to use when many users are online accessing the database.
• D. They are good to use if only data structures must be backed up but not log files.

Answer: A

NEW QUESTION # 81
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_log_file_size=1G
• B. max_connections=10000
• C. buffer_pool_size=24G
• D. innodb_flush_log_at_trx_commit=1
• E. innodb_doublewrite=0
• F. innodb_undo_directory=/dev/shm
• G. sync_binlog=0

Answer: A,B,D

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 # 82
Which two statements are true about MySQL Enterprise Backup? (Choose two.)

• A. It supports restoring to a remote MySQL system.
• B. It creates logical backups.
• C. It supports backup of a remote MySQL system.
• 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 # 83
A MySQL server is monitored using MySQL Enterprise Monitor's agentless installation.
Which three features are available with this installation method? (Choose three.)

• A. disk usage and disk characteristics including disk advisors warnings
• B. operating system memory utilization
• C. security-related advisor warnings
• D. MySQL Replication monitoring
• E. CPU utilization
• F. network-related information and network characteristics
• G. MySQL Query Analysis data

Answer: A,C,G

NEW QUESTION # 84
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 MAX_USER_CONNECTIONS 0;
• B. ALTER USER baduser@hostname ACCOUNT LOCK;
• C. ALTER USER baduser@hostname IDENTIFIED WITH mysql_no_login;
• D. ALTER USER baduser@hostname DEFAULT ROLE NONE;
• E. ALTER USER baduser@hostname PASSWORD DISABLED;

Answer: B,C

NEW QUESTION # 85
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 # 86
Which two are features of MySQL Enterprise Firewall? (Choose two.)

• A. provides stateless firewall access to TCP/3306
• B. blocking of potential threats by configuring pre-approved whitelists
• C. recording incoming SQL statement to facilitate the creation of a whitelist of permitted commands
• D. modifying SQL statement dynamically with substitutions
• E. automatic locking of user accounts who break your firewall

Answer: B,C

NEW QUESTION # 87
Which three are characteristics of a newly created role? (Choose three.)

• A. It can be protected with a password.
• B. It is stored in the mysql.role table.
• C. It can be renamed using the RENAME ROLE statement.
• D. It is created as a locked account.
• E. It can be granted to user accounts.
• F. It can be dropped using the DROP ROLE statement.

Answer: A,E,F

NEW QUESTION # 88
Which two are features of MySQL Enterprise Firewall? (Choose two.)

• A. provides stateless firewall access to TCP/3306
• B. blocking of potential threats by configuring pre-approved whitelists
• C. modifying SQL statement dynamically with substitutions
• D. automatic locking of user accounts who break your firewall
• E. recording incoming SQL statement to facilitate the creation of a whitelist of permitted commands

Answer: B,C

NEW QUESTION # 89
Which two statements are true about the binary log encryption feature? (Choose two.)

• A. It can be activated per session.
• B. It requires a keyring plugin.
• C. It encrypts any connecting slaves connection thread.
• D. It can be set at run time.
• E. When enabled it encrypts existing binary logs.

Answer: A,C

NEW QUESTION # 90
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. 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.
• C. A manual intervention to force group members to be only the working two instances is required.
• D. The cluster has built-in high availability and updates group_replication_ip_whitelist to remove the unreachable nodes.
• E. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.

Answer: A,D

NEW QUESTION # 91
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 allows scanning of other locations to discover more innodb tablespaces.
• B. It defines all innodb tablespace options relative to a starting parent directory.
• C. It moves all innodb tablespaces to the /innodb_extrasdirectory to enable a new innodb_data_home_dirto be defined.
• D. It adds more temporary workspace in addition to the innodb_tmpdirlocation.
• E. It is not necessary because innodb_data_home_diris already defined.

Answer: E

NEW QUESTION # 92
Consider this shell output and executed commands:
[root@oel7 ~]# ps aux | grep mysqld
mysql 2076 3.5 24.6 1386852 372572 ? Ssl 12:01 0:01 /usr/sbin/mysqid
[root@oel7 ~]# kill -15 2076
Which statement is true about MySQL server shutdown?

• A. mysqld_safe prohibits commands that would harm the operation of the server. An error would be returned by the kill command.
• B. kill -15 and kill -9 are effectively the same forced shutdown that risk committed transactions not written to disk.
• C. kill -15 should be avoided. Use other methods such as mysqladmin shutdown or systemctl stop mysqld.
• D. kill -15 carries out a normal shutdown process, such as mysqladmin shutdown.

Answer: D

NEW QUESTION # 93
Which two statements are true about using backups of the binary log? (Choose two.)

• A. Binary logs can always be used to unapply unwanted schema changes.
• B. Multiple binary logs can be applied in parallel for faster data restoration.
• C. Binary logs are relatively small, and therefore, excellent for long-term storage and disaster recovery.
• D. Multiple binary logs can be used to restore data.
• E. They allow for point-in-time recovery of the data.

Answer: A,E

NEW QUESTION # 94
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 is not necessary because innodb_data_home_dir is already defined.
• B. It defines all innodb tablespace options relative to a starting parent directory.
• C. It moves all innodb tablespaces to the /innodb_extras directory to enable a new innodb_data_home_dir to be defined.
• D. It allows scanning of other locations to discover more innodb tablespaces.
• E. It adds more temporary workspace in addition to the innodb_tmpdir location.

Answer: D

Explanation:
Explanation
https://dev.mysql.com/doc/refman/8.0/en/innodb-moving-data-files-offline.html

NEW QUESTION # 95
Which step or set of steps can be used to rotate the error log?

• A. Rename the error log file on disk, and then execute FLUSH ERROR LOGS.
• B. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
• C. Execute SET GLOBAL log_error = '<new error log file>'.
• D. Execute SET GLOBAL expire_logs_days=0 to enforce a log rotation.

Answer: A

NEW QUESTION # 96
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_log_file_size=1G
• B. max_connections=10000
• C. buffer_pool_size=24G
• D. innodb_flush_log_at_trx_commit=1
• E. innodb_doublewrite=0
• F. innodb_undo_directory=/dev/shm
• G. sync_binlog=0

Answer: A,B,D

NEW QUESTION # 97
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. [mysqld]
  default_authentication_plugin=caching_sha2_password
• B. [mysqld]
  default_authentication_plugin=mysql_native_password
• C. ALTER USER user -
  IDENTIFIED WITH caching_sha2_password
  BY 'password';
• D. [mysqld]
  default_authentication_plugin=sha256_password
• E. ALTER USER user -
  IDENTIFIED WITH sha256_password -
  BY 'password';
• F. ALTER USER user -
  IDENTIFIED WITH mysql_native_password
  BY 'password';

Answer: E

NEW QUESTION # 98
Examine these entries from the general query log:

All UPDATE statements reference existing rows.
Which describes the outcome of the sequence of statements?

• A. Connection 25 experiences a lock wait timeout.
• B. A deadlock occurs immediately.
• C. All statements execute without error.
• D. A deadlock occurs after innodb_lock_wait_timeout seconds.
• E. Connection 24 experiences a lock wait timeout.

Answer: D

NEW QUESTION # 99
Examine this statement and output:

You must try to reduce query execution time.
Which two queries should you focus on? (Choose two.)

• A. QN = 2
• B. QN = 5
• C. QN = 1
• D. QN = 4
• E. QN = 3

Answer: A,C

NEW QUESTION # 100
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 slave needs to be restored from backup.
• 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 relay logs should be deleted; then execute START SLAVE;
• D. The relay logs from the master should be used to replace the corrupted relay logs.

Answer: D

NEW QUESTION # 101
Which two commands will display indexes on the partstable in the manufacturing schema? (Choose two.) \

• A. SELECT * FROM information_schema.statistics WHERE table_schema=’manufacturing’
  AND TABLE_NAME=’parts’;
• B. SELECT * FROM information_schema.COLUMN_STATISTICS;
• C. DESCRIBE manufacturing.parts;
• D. EXPLAIN SELECT INDEXES FROM manufacturing.parts;
• E. SHOW INDEXES FROM manufacturing.parts;

Answer: A,B

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E11882_01/server.112/e40540/indexiot.htm#CNCPT912

NEW QUESTION # 102
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