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Question 1

You recently upgraded your MySQL installation to MySQL 8.0.

Examine this client error:

q1_1Z0-908

Which option will allow this client to connect to MySQL Server?

A[mysqld]
default_authentication_plugin=sha256_password

BALTER USER user -
IDENTIFIED WITH mysql_native_password
BY 'password';

C[mysqld]
default_authentication_plugin=caching_sha2_password

DALTER USER user -
IDENTIFIED WITH caching_sha2_password
BY 'password';

EALTER USER user -
IDENTIFIED WITH sha256_password -
BY 'password';

F[mysqld]
default_authentication_plugin=mysql_native_password

Correct Answer: 1

Question 2

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

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

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

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

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

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

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

Correct Answer: 2

C, F

Question 3

Examine this command, which executes successfully on InnoDB Cluster: dba.dropMetadataSchema()

Which two statements are true? (Choose two.)

AGroup Replication will be dissolved and all metadata purged.

BGroup Replication is still operational, but InnoDB Cluster must be reimported under MySQL Shell.

CThe mysql_innodb_cluster_metadata schema is dropped from the instance where the connection was established.

DThe command drops the mysql_innodb_cluster_metadata schema and re-creates it.

EThe mysql_innodb_cluster_metadata schema is dropped from all reachable members of the cluster.

FConnections driven by MySQL Router are not affected by the command.

Correct Answer: 3

C, F

Question 4

Examine this output:

q4_1Z0-908

Which change should optimize the number of buffer pool instances for this workload?

AIncrease the number of buffer pool instances to 16.

BIncrease the number of buffer pool instances to 32.

CDecrease the number of buffer pool instances to 1.

DIncrease the number of buffer pool instances to 12.

EDecrease the number of buffer pool instances to 4.

Correct Answer: 4

Question 5

Your my.cnf file contains these settings:

q5_1Z0-908

You want to log queries that looked at a minimum of 5000 records and either took longer than 5 seconds to run or did not use indexes.

Which contains all the settings that you need to add to or modify the slow log configuration?

Amin_examined_row_limit=5000

Blong_query_time=5
log_throttle_queries_not_using_indexes=5

Clog_throttle_queries_not_using_indexes=5
min_examined_ row_limit=5000

Dlong_query_time=5

Elong_query_time=5
min_examined_row_limit=5000

Flog_throttle_queries_not_using_indexes=5

Glong_query_time=5
log_throttle_queries_not_using_indexes=5
min_examined_row_limit=5000

Correct Answer: 5

Master the MySQL 8.0 Database Administrator 1Z0-908 exam like never before! You’ve reviewed the free 1Z0-908 practice questions, but the actual Oracle Database certification exam demands more. Elevate your preparation with Certsmarket premium Oracle Database 1Z0-908 practice exam questions.

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