Oracle 1Z0-320 Online Practice Questions and Exam Preparation

Oracle 1Z0-320 Online Questions & Answers

• Question 11:

  You have a MySQL Server instance (running with Port# 3306) monitored by the Service Manager in MySQL Enterprise Monitor. You cloned the MySQL Database instance and configured it to be a replicated MySQL instance as Slave using Port# 3316 on the same machine as the Master Server. The replication configuration is working correctly. The Master and Slave Servers are running.

  You are trying to add the newly created MySQL Slave instance to the Monitor. The Service Manager in MySQL Enterprise Monitor notifies you that the new instance is successfully added; however, it is not added correctly at the newly added configuration points to the old Master monitored items. The Monitor shows only one monitored MySQL instance for Master and Slave.

  Identify two reasons for this problem.

  A. The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
  B. The MASTER and SLAVE are grouped as one instance for monitoring.
  C. The mysql.inventory table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
  D. The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
  E. All the MySQL instances (Master and Slave) have the same server_uuid in /auto.cnf.
  B. The MASTER and SLAVE are grouped as one instance for monitoring.
  D. The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.

• Question 12:

  After the installation of the MySQL Server, you cannot find MySQL Utilities. How would you correct the problem?

  A. MySQL Utilities comes with MySQL Enterprise Monitor. Download MySQL Enterprise Monitor to install.
  B. MySQL Utilities is installed with MySQL Server Binary. Put the MySQL bin folder into PATH to allow execution.
  C. MySQL Utilities is a package from MySQL Connector. Download the MySQL/Connector and install.
  D. MySQL Utilities comes with MySQL Enterprise Backup. Download MySQL Enterprise Monitor to install.
  E. MySQL Utilities is a package of utilities that are used for maintenance and administration of MySQL servers. Download the MySQL Utilities separately from www.mysql.com.
  E. MySQL Utilities is a package of utilities that are used for maintenance and administration of MySQL servers. Download the MySQL Utilities separately from www.mysql.com.

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  Reference: https://dev.mysql.com/doc/workbench/en/wb-mysql-utilities.html

• Question 13:

  Your customer runs several Oracle products and would like to reuse them. Identify four options that are certified to work with the MySQL Enterprise Edition features.

  A. MySQL Server can be monitored by Oracle Enterprise Manager both for performance and alerting.
  B. MySQL Server can be hosted using Oracle VM for hard-partitioned virtualization installations.
  C. MySQL Enterprise Firewall uses Oracle Database Firewall to block intrusive users and queries.
  D. MySQL Enterprise Backup can send its backups directly to Oracle Secure Backup.
  E. MySQL Enterprise Encryption uses Cloud Key Vault's access to OpenSSL to create encrypted keys.
  F. MySQL Server's configuration can be saved by Oracle Enterprise Manager so that configuration changes can be tracked.
  C. MySQL Enterprise Firewall uses Oracle Database Firewall to block intrusive users and queries.
  D. MySQL Enterprise Backup can send its backups directly to Oracle Secure Backup.
  E. MySQL Enterprise Encryption uses Cloud Key Vault's access to OpenSSL to create encrypted keys.
  F. MySQL Server's configuration can be saved by Oracle Enterprise Manager so that configuration changes can be tracked.

• Question 14:

  Which three backup scenarios can be accommodated with MySQL Enterprise Backup? (Choose three.)

  A. making a backup directly into tape device by using MySQL Enterprise Backup Media Management Software (MMS)
  B. making partial backup and optimistic backup
  C. converting a database backup from another database vendor to MySQL
  D. making a single file backup by creating backups in single-file format
  E. creating a cloud backup
  A. making a backup directly into tape device by using MySQL Enterprise Backup Media Management Software (MMS)
  D. making a single file backup by creating backups in single-file format
  E. creating a cloud backup

• Question 15:

  An existing MySQL Database environment has been doing backup and restore in a logical way by using the mysqldump and mysql client utilities. When the backup is started using mysqldump with single-transaction mode, the existing application has long wait time. When the restore is required, it takes more than three hours to restore.

  What are two benefits of using mysqlbackup from MySQL Enterprise Backup in this situation?

  A. MySQL Enterprise Backup does not back up system data so that it is much faster.
  B. MySQL Enterprise Backup provides tape backup integration by default. It has the virtual tape option, which allows backup to tape device directly without extra third-party software integration.
  C. mysqlbackup can back up tables with the InnoDB engine without blocking. The backup is hot with InnoDB. Together with Incremental Backup, mysqlbackup from MySQL Enterprise Backup shortens the backup windows.
  D. mysqlbackup utilities dump the full database into a SQL file, which is imported into the mysql client in single-thread mode. mysqlbackup restores data from physical backups. Physical backup methods are faster than logical methods because they involve only file coping without conversion.
  E. mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.
  D. mysqlbackup utilities dump the full database into a SQL file, which is imported into the mysql client in single-thread mode. mysqlbackup restores data from physical backups. Physical backup methods are faster than logical methods because they involve only file coping without conversion.
  E. mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.

• Question 16:

  You are setting up a MySQL Cluster on two machines, where each machine is hosting the following:

  -1x ndbmtd -1x ndb_mgmd -1x mysqld

  The cluster is started. What will happen if the network connection between the two machines is disconnected?

  A. A MySQL Cluster backup process will be kick-started automatically.
  B. The entire cluster will be shut down.
  C. Components from one of the machines will be chosen as victim. Only one machine will provide service.
  D. All components will be running correctly and independently. Machine1 and Machine2 have all data and they can provide service online.
  E. The MySQL Cluster service will be paused. After the network is online, the MySQL Cluster service will be resumed.
  E. The MySQL Cluster service will be paused. After the network is online, the MySQL Cluster service will be resumed.

• Question 17:

  You want to change the default behavior of MySQL Enterprise Monitor (MEM). New instances detected by a MEM agent should automatically monitor discovered instances.

  How can you change the Advisor Setting?

  A. Go to the configuration section (Users) and create a new user according to the existing users of your new MySQL instances.
  B. Go to the configuration section (Advisors) and edit the default settings of the MySQL Process Discovery according to the existing users of your new MySQL instances.
  C. Go to the configuration section (Advisors) and create a new advisor rule for new MySQL instances based on the MySQL Advisor Wizard.
  D. Go to the configuration section (MEM) and configure the default login credentials.
  B. Go to the configuration section (Advisors) and edit the default settings of the MySQL Process Discovery according to the existing users of your new MySQL instances.

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  Reference: https://docs.oracle.com/cd/E17952_01/mysql-monitor-3.0-relnotes-en/news-3-0-0.html

• Question 18:

  Which four options are valid reasons for using a PRIMARY KEY in a table?

  A. Eliminating the need for accessing the database cache
  B. Preventing duplicate keys
  C. Maintaining a history of row insertions or updates
  D. Automatic storage of data in a sorted order
  E. Increasing performance when using SELECT statements
  F. Auto-generating values via AUTO_INCREMENT
  G. Exporting data faster with mysqldump
  B. Preventing duplicate keys
  E. Increasing performance when using SELECT statements
  F. Auto-generating values via AUTO_INCREMENT
  G. Exporting data faster with mysqldump

• Question 19:

  A Cloud customer already has many database instances configured and running in the cloud, however, they are reporting that they are unable to create any more instances. What could be the problem?

  A. The customer does not have proper user rights.
  B. The customer account might have reached its compute quota.
  C. The customer reached the database instance limit of 32.
  D. The customer has not kept up with their patching requirements; new instances cannot be created unless the majority or the template of existing instances are up-to date.
  C. The customer reached the database instance limit of 32.

• Question 20:

  Your system is being swamped by business users running multiple ad hoc queries. What is a valid way to limit the resources for a particular user?

  A. MAX_CONNECTIONS
  B. MAX_UPDATES_PER_DAY
  C. MAX_QUERY_SIZE
  D. MAX_QUERIES_PER_HOUR
  E. CONNECTIONS_PER_HOUR
  D. MAX_QUERIES_PER_HOUR

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  Reference: https://dev.mysql.com/doc/refman/5.7/en/user-resources.html