多选题Which two are the uses of the ASM metadata backup and restore （AMBR） feature？（）AIt can be used to back up all data on ASM disks.BIt can be used to recover the damaged ASM disk group along with the data.CIt can be used to gather information about a pree

第1题：

第2题：

Which two statements are true regarding an Automatic Storage Management (ASM) instance? （）

• A、As ASM instance mounts an ASM control file
• B、An ASM instance uses the ASMB process for rebalancing of disks within a disk group
• C、Automatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET parameter is not set explicitly
• D、An RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started

第3题：

第4题：

You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?（） (Choose two).

• A、The backup as copy can only be taken to disk
• B、The backup as copy can only be taken to tape
• C、Backup can be performed only when the instance is shutdown
• D、Backup will constitute all used and unused blocks in the database

第5题：

The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management (ASM) instance. SQL> STARTUP; Which two activities are performed during a successful start up operation? （）(Choose two.)

• A、The databases configured to use the ASM instance are mounted
• B、The disk groups are mounted as per the ASM_DISKGROUPS initialization parameter
• C、ASM starts the Oracle Cluster Synchronization Services (CSS) daemon if it is not started
• D、ASM discovers and examines the contents of all files that are in the paths specified in the ASM_DISKGROUPS initialization parameters

第6题：

Which two are the uses of the ASM metadata backup and restore （AMBR） feature？（）

• A、 It can be used to back up all data on ASM disks.
• B、 It can be used to recover the damaged ASM disk group along with the data.
• C、 It can be used to gather information about a preexisting ASM disk group with disk paths，disk name，failure groups，attributes templates，and alias directory structure.
• D、 It can be used to re-create the ASM disk group with its attributes.

第7题：

You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for Recovery Manager (RMAN). To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Which two statements are true about the execution of the above command? （）(Choose two.)

• A、The backup piece size will be limited to 300 MB
• B、The RMAN uses multiplexing to perform backup
• C、The operation is accomplished using the default channel available
• D、The RMAN parallelizes the backup although the parallelism is not set for a channel

第8题：

第9题：

Which two statements are true about encrypting RMAN backup？（）

• A、 The transparent encryption of backups uses the encryption wallet
• B、 The database uses the same encryption key for every encrypted backup
• C、 The password encryption of backups only uses the password while creating and restoring backup
• D、 If transparent encryption is configured， you cannot use the SET ENCRYPTION BY PASSWORD  command to make password-protected backups

第10题：

You want to perform the following operations for the DATA ASM disk group： -Verify the consistency of the disk.  -Cross-check all the file extent maps and allocation tables for consistency. check whether the alias metadata directory and file directory are linked correctly.  -Check that ASM metadata directories do not have unreachable allocated blocks.   Which command accomplishes these tasks（）？

• A、 ALTER DISKGROUP data CHECK
• B、 ALTER DISKGROUP data CHECK DISK
• C、 ALTER DISKGROUP data CHECK FILE
• D、 ALTER DISKGROUP data CHECK DISK IN FAILURE GROUP 1