Which three events occur when a node fails in an Oracle Clusterware 19c Cluster? (Choose three.)

• A. Sessions connected to the failed node could be relocated to one or more surviving nodes.
• B. Cluster Resources running on the failed node are suspended until the node is restarted.
• C. Cluster resources running on the failed node must be recovered when the node is restarted.
• D. The node is evicted from the cluster
• E. Cluster Resources running on the failed node are relocated to one or more surviving hub nodes.

Which statement describes the usage of Dynamic Service Fallback in Oracle RAC 19c?

• A. Dynamic Service Fallback allows a service to fall back to a preferred instance when it becomes available after it was failed over to an available instance.
• B. Dynamic Service Fallback allows a service to fall back to a preferred instance when the available instance performance falls below a specified threshold after it was failed over to an available instance.
• C. Dynamic Service Fallback allows a service to relocate to an available instance when the service is stopped on a preferred instance.
• D. To enable Dynamic Service Fallback, you should specify the level of performance of a preferred instance for a service to be relocated to an available instance by setting the -fallback attribute of a service to "Low, Medium, or High".

Zero Downtime Patching uses Fleet Patching and Provisioning to patch Oracle Grid Infrastructure without bringing down Oracle RAC database instances.
Which three statements are true about Zero-Downtime Oracle Grid Infrastructure Patching? (Choose three.)

• A. Zero Downtime Patching requires out-of-place patching of Oracle Grid Infrastructure 19c with Oracle RAC or Oracle RAC One Node databases of 19c or later releases and only the binaries in the Oracle Grid Infrastructure user space are patched.
• B. When using Zero Downtime Patching, the root.sh script must be executed manually with -nodriver update option.
• C. Zero Downtime Patching requires in-place patching of Oracle Grid Infrastructure 19c with Oracle RAC or Oracle RAC One Node databases of 19c or later releases and only the binaries in the Oracle Grid Infrastructure user space are patched.
• D. Zero Downtime Patching can be fully automated by selecting the option to automatically run the root.sh script.
• E. When using Zero Downtime Patching, Oracle Grid Infrastructure OS system software, kernel modules and system commands including ACFS, AFD, OLFS, and OKA are not updated.

Which two statements are true about Oracle Clustered ASM performance? (Choose two.)

• A. All ASM Disks belonging to a disk group should have the same hardware specifications and storage attributes for optimal performance.
• B. All ASM Disks belonging to a disk group should be of the same size for optimal performance.
• C. Hardware-based mirroring combined with ASM mirroring guarantees optimal performance.
• D. To improve performance a database must have two disk groups; one for data and one for the fast recovery area.
• E. Data files, redo logs, and RMAN backup pieces must be stored in different ASM disk groups for optimal performance.

Secure Cluster Communication protects the cluster interconnect from common security threats when used together with Single Network Support. Secure Cluster Communication includes message digest mechanisms, protection against fuzzing, and uses Transport Layer Security (TLS) to provide privacy and data integrity between the cluster members.
Which statement is true about securing cluster interconnect communication?

• A. Database administrators or cluster administrators must provide an encryption key during new Oracle Grid Infrastructure 19c deployment or an upgrade to Oracle Grid Infrastructure 19c to secure the interconnect communication.
• B. Database administrators or cluster administrators must provide a valid server certificate and an Oracle Wallet for each node during new Oracle Grid Infrastructure 19c deployment or an upgrade to Oracle Grid Infrastructure 19c to secure the interconnect communication.
• C. Security for the cluster interconnect is invoked automatically as part of a new Oracle Grid Infrastructure 19c deployment or an upgrade to Oracle Grid Infrastructure 19c using an auto-generated encryption key that is stored locally on each node of the cluster in an Oracle Wallet and Database administrators or cluster administrators must provide a valid path for the Wallet file.
• D. Security for the cluster interconnect is invoked automatically as part of a new Oracle Grid Infrastructure 19c deployment or an upgrade to Oracle Grid Infrastructure 19c and Database administrators or cluster administrators do not need to make any configuration changes for this feature.
• E. Security for the cluster interconnect is invoked by auto-generated server certificates that will be assigned to each cluster node as part of a new Oracle Grid Infrastructure 19c deployment or an upgrade to Oracle Grid Infrastructure 19c.