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Here are sample Oracle MySQL 8.0 Database Administrator (1Z0-908) Exam questions from real exam. You can get more Oracle Database (1Z0-908) Exam premium practice questions at TestInsights.

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Question 1

You are considering using file-system snapshots to back up MySQL.

Which three statements are true? (Choose three.)

AThey take roughly twice as long as logical backups.

BThey allow direct copying of table rows with operating system copy commands.

CThey work best for transaction storage engines that can perform their own recovery when restored.

DThe backup window is almost zero from the perspective of the application.

EThey do not back up views, stored procedures, or configuration files.

FThere is a slight performance cost while the snapshot is active.

GThey do not use additional disk space.

Correct : C, E, G

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AThey take roughly twice as long as logical backups.

BThey allow direct copying of table rows with operating system copy commands.

CThey work best for transaction storage engines that can perform their own recovery when restored.

DThe backup window is almost zero from the perspective of the application.

EThey do not back up views, stored procedures, or configuration files.

FThere is a slight performance cost while the snapshot is active.

GThey do not use additional disk space.

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Question 2

Examine this snippet from the binary log file named binlog.000036:

1Z0-908 Exam Question 2 Exhibit 1

The rental table was accidentally dropped, and you must recover the table.

You have restored the last backup, which corresponds to the start of the binlog.000036 binary log.

Which command will complete the recovery?

Amysqlbinlog --stop-position=500324 binlog.000036 | mysql

Bmysqlbinlog --stop-datetime='2019-ll-20 14:55:18' binlog.000036 | mysql

Cmysqlbinlog --stop-position=5004S3 binlog.000036 | mysql

Dmysqlbinlog --stop-datetime='2019-ll-20 14:55:16' binlog.000036 | mysql

Correct : D

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Amysqlbinlog --stop-position=500324 binlog.000036 | mysql

Bmysqlbinlog --stop-datetime='2019-ll-20 14:55:18' binlog.000036 | mysql

Cmysqlbinlog --stop-position=5004S3 binlog.000036 | mysql

Dmysqlbinlog --stop-datetime='2019-ll-20 14:55:16' binlog.000036 | mysql

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Question 3

You want to dump all databases with names that start with "db".

Which command will achieve this?

Amysqlpump --include-tables=db.% --result-file=all_db_backup.sql

Bmysqlpump > all_db_backup.sql

Cmysqlpump --include-databases=db --result-file=all_db_backup.sql

Dmysqlpump --include-databases=db% --result-file=all_db_backup.sql

Correct : C

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Amysqlpump --include-tables=db.% --result-file=all_db_backup.sql

Bmysqlpump > all_db_backup.sql

Cmysqlpump --include-databases=db --result-file=all_db_backup.sql

Dmysqlpump --include-databases=db% --result-file=all_db_backup.sql

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Question 4

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

AIt encrypts any connecting slaves connection thread.

BIt can be set at run time.

CIt requires a keyring plugin.

DWhen enabled it encrypts existing binary logs.

EIt can be activated per session.

Correct : A, E

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AIt encrypts any connecting slaves connection thread.

BIt can be set at run time.

CIt requires a keyring plugin.

DWhen enabled it encrypts existing binary logs.

EIt can be activated per session.

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Question 5

Which statement is true about InnoDB persistent index statistics?

AUpdating index statistics is an I/O expensive operation.

BIndex statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.

CSetting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.

DExecution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.

EIncreasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.

Correct : A

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AUpdating index statistics is an I/O expensive operation.

BIndex statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.

CSetting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.

DExecution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.

EIncreasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.

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