Which two statements are true about enabling write-back flash cache?

• A.When enabling write-back flash cache in a rolling manner, DBCLI should be used to inactivate the grid disks on all cells first.
• B.Before write-back flash cache is enabled, you need to drop the Flash Cache first.
• C.Write-back Flash Cache cannot be used on Extreme Flash Storage Servers.
• D.When enabling write-back flash cache in a non-rolling manner, you need to drop the Persistent Memory Commit Accelerator (PMEMLog) first.
• E.Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations.

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An Exadata X9M-2 Elastic Rack with 4 Database Servers and 8 HC Storage Servers and 3-phase 24kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU. Which statement is correct?

• A.The installation cannot proceed until two power feeds are available per PDU.
• B.The installation can go ahead, no change is required.
• C.The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
• D.A splitter cable can be used to provide power to all PDU cables.

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Your customer needs to ensure that their data is available on the Exadata machine during updates. The customer wants to be able to update one server at a time but still be protected against single-node server failure.
What ASM redundancy level should they use?

• A.Normal
• B.Sparse
• C.High
• D.External
• E.Extended

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You are hardening the security posture of your Exadata Database Machine. Before disabling ssh access to the storage servers, what should you do to enable REST access to the MS process?

• A.Install Oracle Rest Data Services on each Storage server and install the MS APEX application.
• B.The MS Process on the storage servers is natively endowed with REST services and are enabled by default, however, appropriate roles and users should be created to ensure security.
• C.The MS Process on the storage servers is natively endowed with REST services, but are not enabled by default.
• D.Install Oracle Rest Data Services on each Database server and install the MS APEX application.

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You have configured a multirack Database Machine with two X9M-8 full racks all in a single cluster and storage grid comprising a total of 4 X9M-8 Database servers and 28 X9M-8 Storage servers.
Which two options are true regarding the servers on which Enterprise Manager agents must be deployed in order to monitor all components of this multirack configuration?

• A.on all database servers in the second rack
• B.on at least two storage servers in both racks
• C.on all storage servers in both racks
• D.on all database servers and at least two storage servers in both racks
• E.on all database servers in both racks and one storage server in each rack
• F.on all database servers in the first rack
• G.on only one database server in both racks

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