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Oracle 1z0-908 Exam With Confidence Using Practice Dumps

Exam Code:
1z0-908
Exam Name:
MySQL 8.0 Database Administrator
Vendor:
Questions:
140
Last Updated:
Apr 30, 2025
Exam Status:
Stable
Oracle 1z0-908

1z0-908: MySQL Database Administration Exam 2025 Study Guide Pdf and Test Engine

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MySQL 8.0 Database Administrator Questions and Answers

Question 1

You have semi-synchronous replication configured and working with one slave. rpl_semi_sync_master_timeout has never been reached.

You find that the disk system on the master has failed and as a result, the data on the master is completely unrecoverable.

Which two statements are true? (Choose two.)

Options:

A.

No committed transactions are lost.

B.

The slave automatically identifies that the master is unreachable and performs any required actions so that applications can start using the slave as the new master.

C.

As soon as the incident happens, application can read data from the slave and rely on it to return a full and current set of data.

D.

Reads from the slave can return outdated data until the value of the rpi_semi_sync_master_timeout variable is reached.

E.

Reads from the slave can return outdated data for some time, until it applies all transactions from its relay log.

F.

A small amount of committed transactions may be lost in case they were committed just before the disk failure.

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Question 2

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?

Options:

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 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 of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc

GTIDs.

E.

Replication will work.

Question 3

Which two are true about differences between logical and physical upgrades of MySQL databases? (Choose two.)

Options:

A.

Post-upgrade table storage requirements after logical upgrades are usually smaller than that after physical upgrades.

B.

Physical upgrades are performed for current instances on bare metal deployments, whereas logical upgrades are used for virtual machines or containerized instances.

C.

Logical upgrades are much faster because they do not require restarting the mysqld process.

D.

Post-upgrade table storage requirements after physical upgrades are usually smaller than that after logical upgrades.

E.

Physical upgrades are much faster because they do not require restarting the mysqld process.

F.

Physical upgrades leave data in place, whereas logical upgrades require data to be restored from mysqldump-type backups taken before the upgrades.