1z1-908 Study Guide Brilliant 1z1-908 Exam Dumps PDF [Q37-Q61]

1z1-908 Study Guide Brilliant 1z1-908 Exam Dumps PDF

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Oracle 1Z0-908 certification exam is designed for individuals who want to demonstrate their expertise in administering MySQL 8.0 databases. 1z1-908 exam is intended for professionals who have experience in database administration, backup and recovery, performance tuning, security, and high availability. MySQL 8.0 Database Administrator certification validates the candidate's skills in using MySQL tools and features to manage and maintain databases efficiently.

Passing the Oracle 1Z0-908 exam will demonstrate that a candidate has a deep understanding of MySQL 8.0 and is able to effectively manage and maintain databases. Certification will also help professionals stay up-to-date with the latest developments in MySQL 8.0, and open up new career opportunities in database management.

 

NEW QUESTION # 37
Examine this command, which executes successfully:

Which statement is true?

• A. Only files for MySQL or Its built-in storage engines are backed
• B. Only tables stored in their own tablespaces are backed up.
• C. The backup includes only data files and their metadata.
• D. Only non-encrypted files are backed up.
• E. Only InnoDB data and log files are backed up.

Answer: E

NEW QUESTION # 38
A valid raw backup of the shop.customers MyISAM table was taken.
You must restore the table. You begin with these steps:
1. Confirm that secure_file_priv='/var/tmp'
2. mysql> DROP TABLE shop.customers;
3. shell> cp /backup/customers.MY* /var/lib/mysql/shop/
Which two actions are required to complete the restore? (Choose two.)

• A. mysql> IMPORT TABLE FROM /var/tmp/customers.sdi
• B. shell> cp /backup/customers.frm /var/lib/mysql/shop/
• C. mysql> IMPORT TABLE FROM /var/lib/mysql/shop/customers.sdi
• D. mysql> ALTER TABLE shop.customers IMPORT TABLESPACE
• E. mysql> SOURCE '/var/tmp/customers.sdi'
• F. shell> cp /backup/customers.sdi /var/tmp
• G. shell> cp /backup/customers.sdi /var/lib/mysql/shop/
• H. mysql> ALTER TABLE shop.customers DISCARD TABLESPACE

Answer: A,D

NEW QUESTION # 39
You are having performance issues with MySQL instances. Those servers are monitored with MySQL Enterprise Monitor.
Using Query Analyzer, where do you begin to look for problem queries?

• A. Sort the "Exec" column and check for SQL queries with high Query Response Time index (QRTi) values.
• B. Look for queries with low total latency times in the Latency section in the times series graph.
• C. Look for queries with big prolonged spikes in row activity/access graph in the times series graph.
• D. Sort the "Exec" column and check for SQL queries with low Query Response Time index (QRTi) values.

Answer: C

NEW QUESTION # 40
Which three requirements must be enabled for group replication? (Choose three.)

• A. primary key or primary key equivalent on every table
• B. binary log checksum
• C. binary log MIXED format
• D. replication filters
• E. slave updates logging
• F. semi-sync replication plugin
• G. binary log ROW format

Answer: A,C,F

NEW QUESTION # 41
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 expire_logs_days=0to enforce a log rotation.
• C. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
• D. Execute SET GLOBAL log_error = ‘<new error log file>’.

Answer: A

Explanation:
Explanation/Reference: https://blog.pythian.com/mysql-log-rotation/

NEW QUESTION # 42
Examine the modified output:

Seconds_Behind_ Mastervalue is steadily growing.
What are two possible causes? (Choose two.)

• A. The master is most probably too busy to transmit data and the slave needs to wait for more data.
• B. This value shows only I/O latency and is not indicative of the size of the transaction queue.
• C. The master is producing a large volume of events in parallel but the slave is processing them serially.
• D. One or more large tables do not have primary keys.
• E. The parallel slave threads are experiencing lock contention.

Answer: B,C

Explanation:
Explanation

NEW QUESTION # 43
Examine the modified output:

Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)

• A. The master is most probably too busy to transmit data and the slave needs to wait for more data.
• B. This value shows only I/O latency and is not indicative of the size of the transaction queue.
• C. The master is producing a large volume of events in parallel but the slave is processing them serially.
• D. One or more large tables do not have primary keys.
• E. The parallel slave threads are experiencing lock contention.

Answer: B,C

NEW QUESTION # 44
Examine this statement and output:

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

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

Answer: B,E

NEW QUESTION # 45
Examine this statement, which executes successfully:

Now examine this query:

Which two statements can do this? (Choose two.)

• A. ALTER TABLE employees -
  ADD INDEX (birth_date DESC);
• B. ALTER TABLE employees -
  ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (MONTH(birth_date)) VIRTUAL NOT NULL, ADD INDEX (birth_month);
• C. ALTER TABLE employees -
  ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (birth_date->>'$.month') VIRTUAL NOT NULL, ADD INDEX (birth_month);
• D. ALTER TABLE employees -
  ADD INDEX (birth_date);
• E. ALTER TABLE employees -
  ADD INDEX ((CAST(birth_date->>'$.month' AS unsigned)));
• F. ALTER TABLE employees -
  ADD INDEX ((MONTH(birth_date)));

Answer: A,C

NEW QUESTION # 46
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 dba.rebootClusterFromCompleteOutage()
• B. It has been expelled from the cluster because of a transaction error.
• C. It can rejoin the cluster by using the command cluster.addInstance('<user>@host3:3377')
• D. It has been removed from the cluster by using the command STOP GROUP_REPLICATION;
• E. It can be recovered from a donor instance on host3 by cloning using the command cluster.rejoinInstance ('<user>@host3:3377')

Answer: A

NEW QUESTION # 47
Examine this command and output:

Which two options will improve the security of the MySQL instance? (Choose two.)

• A. Change the group ownership of the mysql directory to the mysql user group.
• B. Remove the world read/execute privilege from the accounting directory.
• C. Remove world read privileges from the public_key.pem file.
• D. Remove world read privileges from the server-cert.pem certificate file.
• E. Change the parent directory owner and group to mysql.
• F. Remove group read/write privileges from the private_key.pem file.

Answer: A,E

NEW QUESTION # 48
MySQL is installed on a Linux server with this configuration:

Which method sets the default authentication to SHA-256 hashing for authenticating user account passwords?

• A. Set validate-user-plugins=caching_sha2_password in the configuration file.
• B. Add default_authentication_plugin=sha256_password in the configuration file.
• C. Define CREATE USER ''@'%' IDENTIFIED WITH sha256_password in the MySQL instance.
• D. Add default_authentication_plugin=mysql_native_password in the configuration file.

Answer: B

NEW QUESTION # 49
Examine this command and output:

Which two statements are true? (Choose two.)

• A. The lock is an intentional lock.
• B. The lock is at the metadata object level.
• C. The lock is a row-level lock.
• D. The lock is a shared lock.
• E. The lock is at the table object level.
• F. The lock is an exclusive lock.

Answer: E,F

NEW QUESTION # 50
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 work.
• B. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.
• C. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-cccccccccccc GTIDs.
• D. Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.
• E. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.

Answer: D

NEW QUESTION # 51
Which two storage engines provide a view of the data consistent with the storage system at any moment?
(Choose two.)

• A. NDB
• B. ARCHIVE
• C. MEMORY
• D. MyISAM
• E. InnoDB

Answer: C,D

Explanation:
Explanation/Reference: https://zetcode.com/mysql/storageengines/

NEW QUESTION # 52
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->mydb2' | mysql
• C. mysqlbinlog --read-from-remote-server --raw | sed 's/mydb1/mydb2/g' | mysql
• D. mysqlbinlog --rewrite-db='mydb1' --rewrite-db='mydb2' | mysql

Answer: C

NEW QUESTION # 53
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. employee
• B. information_schema
• C. sys
• D. world
• E. mysql

Answer: B,C

Explanation:
Explanation/Reference: https://mysqlserverteam.com/introducing-mysqlpump/

NEW QUESTION # 54
You have just installed MySQL on Oracle Linux and adjusted your /etc/my.cnfparameters to suit your installation.
Examine the output:

What statement is true about the start attempt?

• A. systemdattempted to start mysqld, found another systemd mysqldprocess running, and shut it down.
• B. MySQL server was not started due to a problem while executing process 2732.
• C. MySQL server continued to start up even though another process existed.
• D. systemd found the mysqldservice disabled and failed to start it.
• E. systemdwaited for 30 seconds before timing out and start up failed.

Answer: A

NEW QUESTION # 55
You have configured GTID-based asynchronous replication with one master and one slave.
A user accidentally updated some data on the slave.
To fix this, you stopped replication and successfully reverted the accidental changes.
Examine the current GTID information:

You must fix GTID sets on the slave to avoid replicating unwanted transactions in case of failover.
Which set of actions would allow the slave to continue replicating without erroneous transactions?
RESET MASTER;

• A. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
• B. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-3820;
  SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa—aaaaaaaaaaaa:1-10300;
  RESET MASTER;
• C. bbbb-bbbb-bbbb-bbbbbbbbbbbb:1-9;
  SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
  RESET SLAVE;
• D. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
  SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312,bbbbbbbb-
• E. SET GLOBAL gtid_purged-aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312;
  SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
  RESET SLAVE;

Answer: E

NEW QUESTION # 56
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. innodb_doublewrite=0
• C. sync_binlog=0
• D. buffer_pool_size=24G
• E. innodb_undo_directory=/dev/shm
• F. max_connections=10000
• G. innodb_flush_log_at_trx_commit=1

Answer: A,F,G

NEW QUESTION # 57
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. 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.
• B. Go to the <datadir>/mysql directory and execute: myisamchk --update-state columns_priv event proc proxies_priv tables_priv.
• C. Execute: mysqlcheck --repair mysql columns_priv event proc proxies_priv tables_priv.
• D. Execute: mysqlcheck --check-upgrade mysql columns_priv event proc proxies_priv tables_priv.
• E. Start mysqld again using the --upgrade=FORCE option.

Answer: E

NEW QUESTION # 58
Examine this command, which executes successfully:
cluster.addInstance('<user>@<host>:<port>', {recoveryMethod: 'clone'})
Which three statements are true? (Choose three.)

• A. A new instance is installed, initialized, and provisioned with data from an instance already in the cluster and joined to the cluster.
• B. InnoDB redo logs must not rotate for the duration of the execution; otherwise, the recovery will fail.
• C. InnoDB tablespaces outside the datadir are able to be cloned.
• D. The account used to perform this recovery needs the BACKUP_ADMIN privilege.
• E. A target instance must exist, then it will be provisioned with data from an instance already in the cluster and joined to the cluster.
• F. It is always slower than {recoveryMethod: 'incremental'}.

Answer: B,D,F

NEW QUESTION # 59
Which two statements are true about MySQL Installer? (Choose two.)

• A. It provides a uniform installation wizard across multiple platforms.
• B. It performs product upgrades.
• C. It provides only GUI-driven, interactive installations.
• D. It installs most Oracle MySQL products.
• E. Manual download of separate product packages is required before installing them through MySQL Installer.

Answer: B,C

NEW QUESTION # 60
Examine these statements and output:

Which statement is true?

• A. The user is authorized as the accounting@localhost user.
• B. The user failed to define a username and the connecting username defaulted to ''@'%'.
• C. The user is authenticated as the anonymous proxy user ''@'%'.
• D. The user is logged in with --user=accounting as an option.
• E. The user is authorized as the rsmith@localhost user.

Answer: E

NEW QUESTION # 61
......

The topics covered in the Oracle 1z1-908 exam are divided into six categories. The first category is MySQL Architecture and General Administration, which covers the basics of MySQL architecture and the various administrative tasks such as installing MySQL, configuring MySQL server options, and managing user accounts. The second category is Security, which covers access control, authentication, and encryption. The third category is Backup, Recovery, and High Availability, which covers backup and recovery strategies and high availability solutions.

 

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1z1-908 Dumps Updated Oct 02, 2023 WIith 142 Questions: https://drive.google.com/open?id=1FtaV4Xe4D1PhMMxa3O9j-sryRI5_QS0K