Question 91

You have successfully provisioned the latest MySQL 5.7 database instance on a physical host, to be added to an existing farm for use in a modern, high volume, ACID-compliant, OLTP website, which serves hundreds of DML transactions per second.
The default values of which two key variables do you change to ensure seamless operation of the database?
(Choose two.)
  • Question 92

    You have a scheduled task on Linux that executes mysqldumpagainst the localhost server periodically.
    When checking the logs of this event to ensure that things are working and that backups will restore, you notice an output that is concerning.
    The command the scheduled task is executing as follows:
    $ mysqldump -u backupuser -h 127.0.0.1 -pt100043va living --protocol=TCP
    > /backups/latest.sql
    Warning: Using a password on the command-line interface can be insecure.
    Which two methods are available to avoid the warning? (Choose two.)
  • Question 93

    Consider:

    What does the range value in the type column mean?
  • Question 94

    The MySQL installation includes the mysql_config_editor utility for managing login paths stored in a
    .mylogin.cnf file.
    Which two are true about the login path feature?
  • Question 95

    You inherited a busy InnoDB OLTP Instance with 100 schemas and 100 active users per schema.
    * Total dataset size is 200G with an average schema size of 2G.
    * The data is transient and is not backed up and can be repopulated easily.
    * Performance and responsiveness of the DB is paramount.
    * The query pattern for the DB instance is split 90/10 read/write.
    * DB host is dedicated server with 256G RAM and 64 cores.
    One of your colleagues made some recent changes to the system and users are now complaining of performance impacts.
    Which four configuration file edits might your colleague have performed to cause the negative DB performance?