1Z0-883MySQL 5.6 Database Administrator
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1Z0-883 Online Practice Questions and Answers
A Mysql instance is running on a dedicated server. Developers access the server from the same network subnet. Users access the database through an application that is running on a separate server in a DMZ.
Which two will optimize the security of this setup?
A. Disabling connections from named pipes or socket files (depending on the operating system of the server)
B. Running the server with skip-networking specified
C. Limiting logins to originate from the application server or the server's subnet
D. Starting the server with bind- address=0.0.0.0 specified
E. Installing Mysql on the application server, and running the database and application on the same server
F. Enabling and using SSL for connections to the Mysql database
Full Atomicity, Consistency, Isolation, Durability (ACID) compliance is a necessity for a new application, which heavily reads and writes data.
This requires the following config file options:
Sync_binlog=1 Innodb_flush_log_at_trx_commit=1 Innodb_doublewrite=1
However, this configuration is expected to introduce disk I/O overhead.
What three changes will reduce disk I/O overheads?
A. Use of soft links for database directories on the same physical disk
B. Use of separate directories on the same physical disk for log files and data files
C. Placement of InnoDB log files and datadir on separate physical disks
D. Allocation of RAM to the buffer pool such that more of the data can fit in RAM
E. Use of delay_key_write=ON for batch index update
The following commands are available in the Linux binary distributions of Mysql:
Mysqld
Mysqld_safe
Mysql.server
What is the correct description of each of these commands?
A. Mysqld is the server. Mysqld_safe is a shell script that invokes mysqld. Mysql.server is a wrapper for mysql_safe.
B. Mysqld is a shell script that starts mysql.server. Mysqld_safe causes the server to start up in data recovery mode. Mysql.server is the server.
C. Mysqld is the server. Mysqld_safe causes the server to start up in data recovery mode. Mysql.server is a wrapper for mysqld_safe.
D. Mysql, mysqld.safe, and mysql.server reside in different locations but are all symlinked to the same script.
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