1Z0-908 무료 덤프문제 온라인 액세스

You are using mysqlcheck for server maintenance.
Which two statements are true? (Choose two.)

• A.The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.
• B.The mysqlcheck --check --all-databases command takes table write locks while performing a series of checks.
• C.The mysqlcheck --analyze --all-databases command performs a series of checks to spot eventual table corruptions.
• D.The mysqlcheck --optimize --all-databases command reclaims free space from table files.
• E.The mysqlcheck --repair --all-databases command can repair an InnoDB corrupted table.

Which three are characteristics of a newly created role? (Choose three.)

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

Which two are characteristics of snapshot-based backups? (Choose two.)

• A.Snapshot-based backups greatly reduce time during which the database and applications are unavailable.
• B.The frozen file system can be cloned to another virtual machine immediately into active service.
• C.There is no need for InnoDB tables to perform its own recovery when restoring from the snapshot backup.
• D.A separate physical copy must be made before releasing the snapshot backup.
• E.Snapshot backups can be used only in virtual machines.

Which statement is true about displaying and retrieving data with MySQL Enterprise Monitor Query Analyzer?

• A.The Query Analyzer graph view range selector can extend to cover the same hour over multiple days.
• B.It is possible to filter a Query Analyzer view graph by database and by table.
• C.It is possible to export statements included in a graph selection in CSV format.
• D.The Query Analyzer can plot a CPU utilization graph for remote hosts with a MySQL Enterprise Service Manager's built-in Agent installation.

Examine this statement, which executes successfully:

You want to improve the performance of this query:

Which change enables the query to succeed while accessing fewer rows?

• A.ALTER TABLE world.city ADD INDEX (Population);
• B.ALTER TABLE world.city ADD FULLTEXT INDEX (Population);
• C.ALTER TABLE world.city ADD INDEX (Name);
• D.ALTER TABLE world.city ADD SPATIAL INDEX (Population);
• E.ALTER TABLE world.city ADD SPATIAL INDEX (Name);
• F.ALTER TABLE world.city ADD FULLTEXT INDEX (Name);