In GaussDB, which of the following components provides management interfaces and tools for cluster routine maintenance and configuration management? 

In GaussDB primary/standby deployments, one primary node and two standby nodes are deployed. Which of the following features does this deployment indicate? 

If a host needs to remotely connect to a database, the host information must be added to the configuration file of the database. 

Unlike Statement, PreparedStatement can execute statements with different input parameter sets.