A. The LGWR process writes to them on a standby database.

B. They are required on a logical standby for real-time apply.

C. Only standby databases can write redo to them.

D. They are required only for synchronous redo transport.

E. They are required on a physical standby for real-time apply.

F. It is recommended to have them on the primary database.

A. It can be used to monitor redo transport and log apply services.

B. It can be used to create and manage standby databases.

C. It can be used to perform failovers and switchovers.

D. It automatically adds the primary database to an existing broker configuration when Enterprise Manager Cloud Control is used to create a standby.

E. It automatically starts the DMON process for the database instances that are part of a Data Guard configuration.

A. They work in Maximum Protection mode.

B. They work in Maximum Availability mode.

C. They do not work with Logical Standby databases.

D. They do not work with Snapshot Standby databases.

E. They work in Maximum Performance mode.

A. monitoring the transport lag

B. monitoring the redo apply rate on a physical standby

C. monitoring the redo apply rate on a logical standby

D. monitoring the redo apply rate on a snapshot standby

E. monitoring the undo generation rate on the primary

F. monitoring the undo generation rate on a logical standby

A. A logical standby database chooses an appropriate location for writing its own standby archive logs automatically.

B. A physical standby database instance chooses an appropriate location for writing its own standby archive logs automatically.

C. A far sync instance writes to the LOG_ARCHIVE_DEST directory if the remote logical standby database instance to which it routes redo, is not reachable.

D. A logical standby database instance writes online redo logs.

E. A far sync instance writes to the LOG_ARCHIVE_DEST directory if the remote physical standby database instance to which it routes redo, is not reachable.

F. A physical standby database instance writes online redo logs.

A. Catalog the data file copy for RMAN to use on the primary database for restore.

B. Switch to the data file copy using the RMAN SWITCH command.

C. Connect to the primary database as the AUXILIARY.

D. Back up the data file as copy on the standby host to a location on the standby host.

E. Back up the data file as copy on the standby host to a location on the primary host.

F. Connect to the primary database as the TARGET.