1Z0-902 Exadata X9M Implementation Practice Questions

This option correctly describes the ASR workflow. The hardware-level monitoring is done by the ILOM (Service Processor). Upon detecting a fault, the ILOM sends a standardized SNMP trap to the ASR Manager software. The ASR Manager then interprets the fault, collects relevant diagnostic information, and opens a secure connection to Oracle Support to automatically log a Service Request (SR).

On Exadata virtualized platforms, CPU cores must be allocated to VMs in increments of 2. Therefore, 10 is a valid even number for the cpuCoreCount. Values like 7, 9, or 11 are invalid as they are odd numbers and would result in a configuration error.

This statement is false. While Write-Through mode primarily benefits reads, Write-Back mode is specifically designed to accelerate write performance. In Write-Back mode, writes are acknowledged as complete once they are written to the persistent flash cache, without immediately waiting for the write to the slower hard disks. This significantly reduces write latency.

The LIST PHYSICALDISK command in CellCLI is used to query attributes of the physical storage devices. The physicalFirmware attribute specifically displays the firmware version of the disk controller for both hard disks and flash devices. CELLDISK is a logical layer, and LUN is a different object within the storage server.

High redundancy (three failure groups) is designed to tolerate the loss of two failure groups. When one storage server (one failure group) fails, the ASM disk group remains online and fully operational because two good copies of every data extent still exist on the remaining two failure groups. ASM will begin a rebalance operation to restore full redundancy across the surviving storage servers, but the database remains available throughout.

CellWall is the Exadata Storage Server's built-in firewall feature. It allows administrators to define IP-based access control rules for services running on the storage cells, effectively restricting which database servers can communicate with them. This directly addresses the requirement for network traffic isolation and controlled access. ASM Scoped Security controls access to disk groups, AIDE monitors file integrity, and Secure Boot ensures the integrity of the boot process, but none of them function as a network firewall like CellWall.

The patchmgr utility is the standard tool for applying updates to Exadata components. To update a single storage server, the -cells flag is used to specify the target cell by name or IP address, and the -upgrade flag initiates the patching process. The other commands are either incorrect syntax (dbmcli) or perform different functions (cellcli for validation, patchmgr for prereq checks).

Exadata flash cards are designed to be hot-swappable, allowing for replacement without powering down the storage server, which minimizes downtime.

Once the new physical card is detected, the Exadata software automatically handles the configuration, including re-creating the necessary Flash Cache and Flash Log structures without manual intervention.

Exadata provides a specific configuration to enable FIPS mode for the operating system's cryptographic modules. This ensures that all cryptographic operations performed by the OS (such as SSH, SSL) use FIPS 140-2 validated algorithms, meeting the compliance requirement. TDE encrypts database files within ASM, but does not affect the OS filesystem's cryptographic modules. Database Vault controls privileged user access, and CellWall is a network firewall.

While OEDA automates a significant portion of the process, adding a new database server requires several manual steps. These include physically racking the server, connecting power and network cables, and performing initial ILOM configuration before OEDA's automated scripts can be run to integrate the server into the cluster.