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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q10-Q15):

NEW QUESTION # 10
You have been asked to design a backup solution for an Exadata X9M-2 Quarter Rack with Extreme Flash Storage Servers connected to a new ZFS Storage Appliance ZS7 with 2 Storage Controllers with 100Gb Ethernet cards and 3 Storage Trays. You are using Oracle Exadata Configuration Assistant to validate the rack layout.
1. Use "Add Equipment" to add the Exadata X9M EF Storage Servers, starting from RU10.
2. Use drop down to add ZFS Storage Appliance Controllers.
3. You cannot add ZFS Storage Appliance to an Exadata Rack.
4. Use "Add Equipment" to add the ZFS Storage Trays, starting from RU1.
5. Use drop down to add ZFS Storage Trays.
6. Use "Add Equipment" to add the Exadata X9M Database Servers, starting from RU16.
7. Use "Add Equipment" to add the Exadata X9M EF Storage Servers, starting from RU1.
8. Use drop down to add Exadata X9M EF Storage Servers.
9. Use "Add Equipment" to add the ZFS Storage Controllers, starting from RU27.
10. Use drop down to add Exadata X9M Database Servers.
11. Use "Add Equipment" to add the ZFS Storage Trays, starting from RU31.
Which of these steps are correct and what is their correct order?

A. 10, 8, 2, 5
B. 10, 8, 9, 11
C. 4,1, 6, 9
D. 0
E. 7,6,9,11

Answer: B

Explanation:
The correct order of steps is 10, 8, 9, 11. The 10th step is to use the drop down to add Exadata X9M Database Servers, the 8th step is to use the drop down to add Exadata X9M EF Storage Servers, the 9th step is to use "Add Equipment" to add the ZFS Storage Controllers, and the 11th step is to use "Add Equipment" to add the ZFS Storage Trays. These steps are referenced in the Oracle Exadata Database Machine X9M Implementation Essentials Official Textbook, which is available online at https://docs.oracle.com/cd/E80437_01/E80437/html/index.html.

NEW QUESTION # 11
You plan to monitor the status of the motherboard, memory, power, fans, and network cards on the database nodes in your Exadata Database Machine using Enterprise Manager.
Where must you set the thresholds for these hardware components and why, to assure that sensor readings, faults, and any related alerts, are visible in Enterprise Manager?

A. Set thresholds only in ILOM because they are not preset anywhere but need to be set only in ILOM.
B. Set thresholds in ILOM and in Enterprise Manager because they are not preset anywhere and must be set in both places.
C. No thresholds need to be set because they are preset in the ILOM and these are sufficient for monitoring.
D. No thresholds need to be set because they are preset in the ILOM and in Enterprise Manager

Answer: D

Explanation:
For Exadata systems, hardware monitoring for components like the motherboard, memory, power, fans, and network cards on the database nodes is managed through the Integrated Lights Out Manager (ILOM). The ILOM provides built-in thresholds and sensor readings that are automatically recognized by Oracle Enterprise Manager.
These thresholds and alerts are already configured within ILOM for Exadata components, ensuring seamless integration with Enterprise Manager for alerting and monitoring purposes.
Enterprise Manager uses these pre-set ILOM thresholds and does not require additional configuration for monitoring hardware components. Therefore, administrators benefit from preset alerting mechanisms that are sufficient for comprehensive hardware status visibility.

NEW QUESTION # 12
Which two Exadata security features would you configure to control which databases can access which griddisks, when multiple databases share space on your storage servers in an unpartitioned storage grid?

A. Exadata storage realms using ASM-scoped security mode
B. File permissions on the griddisks in each database server
C. Exadata storage realms using database-scoped security mode
D. File permissions on the griddisks in each storage server
E. Using EXADCLI instead of CELLCLI to create the griddisks

Answer: A,C

Explanation:
Exadata storage realms using ASM-scoped security mode allows you to control which database can access which griddisks by creating realms at the ASM level, thereby allowing you to limit the access of each database to the griddisks that it needs to access. This is covered in section 3.15.2 of the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources [1].
Exadata storage realms using database-scoped security mode allows you to control which database can access which griddisks by creating realms at the database level [1], thereby allowing you to limit the access of each database to the griddisks that it needs to access. This is covered in section 3.15.3 of the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources [2].
[1] https://docs.oracle.com/en/engineered-systems/exadata-database-machine/x9m/exad-implementing-database-machine-x9m.pdf [2] https://docs.oracle.com/en/engineered-systems/exadata-database-machine/x9m/exad-implementing-database-machine-x9m.pdf

NEW QUESTION # 13
You want to monitor how a large production table is accessed. Especially, you are interested to see how the access on that particular table leverages the benefits of the Exadata Platform.
Which two actions are NOT appropriate for that purpose?

A. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
B. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.
C. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
D. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.

Answer: A,D

Explanation:
A) YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table. This does not show how much data was filtered by Smart Scan, but only how much data was returned after Smart Scan12.
C) You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table. This does not show how much data was filtered by Smart Scan for a specific table, but only for all tables in a session12.
https://www.databasejournal.com/oracle/monitoring-smart-scans-in-oracle-exadata/

NEW QUESTION # 14
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?

A. ZFS Snapshots can provide rapid cloning of development and test environment.
B. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
C. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
D. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.

Answer: B,D

Explanation:
A) ZFS Storage Appliance (ZFSSA) can't connect directly to the Exadata 100Gb RoCE network switches. ZFSSA uses Fibre Channel protocol to connect to the Exadata storage cells.
C) When backing up multi-rack systems, sharing Exadata X9M switches is not recommended. Each rack should have its own switches to minimize the risk of data loss due to switch failure.
Review the safety guidelines.
Unpack Oracle Exadata Rack.
Let the Exadata acclimatize for 24 hours.
Place Exadata in its allocated space.
Stabilize the Exadata Rack.
Power on Exadata PDU A.
Power on Exadata PDU B.
This order ensures that the necessary safety precautions are taken before installing the Exadata Database Machine, and that the machine is allowed to acclimate to its new environment before being powered on.

NEW QUESTION # 15
......

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