mysql8.0英文OCP考试第81-90题

Q81.The replication for master ad slave MySQL Server is up and running .The disk space occupied by the binary log files continues to grow.

Which two methods mange this issue?

A)Execute the FLUSH LOGS statement.

B)Delete all binary log files manually a=on the file system to release storage space.

C)Execute the PURGE BINARY LOGS statement.

D)On the master server,disable binary logging by removing the --log-bin option

E)Set the binlog_expire_logs_seconds variable. 

Answer:CE

Q82.Examine this list of MySQL data directory binary logs:

Binlog.000001

Binlog.000002

........

Binlog.000289

Binlog.000300

Binlog.000301

Binlog.index

Now examine this command, which executes successfully:

Mysqldump --delete-master-logs--all-databases>/backup/db_backup.sql

Which two are true?

A)All databases are backed up to the output file.（不会备份sys、information_schema、performace_schema）

B)All details regarding deleted logs and master metadata are captured i