1Z0-902 ADVANCED TESTING ENGINE - 1Z0-902 LATEST TEST QUESTIONS

1Z0-902 Advanced Testing Engine - 1Z0-902 Latest Test Questions

1Z0-902 Advanced Testing Engine - 1Z0-902 Latest Test Questions

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Oracle Exadata Database Machine X8M is a high-performance database system that is designed to provide faster data processing and storage capabilities. The system is built with advanced hardware and software components that work together to deliver unmatched performance and scalability. The Oracle 1z1-902 certification exam is an industry-recognized credential that verifies an individual's skill and knowledge in implementing and managing the Exadata database machine X8M.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q29-Q34):

NEW QUESTION # 29
For which four component failures on an X9M Database Machine does Auto Service Request (ASR) raise service requests?

  • A. power distribution units
  • B. Cisco RDMA over Converged Ethernet (RoCE) switches
  • C. Cisco management switch
  • D. RoCE network interface cards in the storage servers
  • E. fans in the storage servers
  • F. RoCE network interface cards in the database servers
  • G. power supplies in the database servers

Answer: A,B,D,G

Explanation:
According to the Oracle Auto Service Request (ASR) documentation1, ASR raises service requests for qualified Oracle products that are detected with specific faults. The qualified Exadata products include2:
Database servers
Storage servers
InfiniBand switches
Cisco switches (X8M and later systems)
Power distribution units (PDUs)


NEW QUESTION # 30
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 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.
  • B. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
  • C. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
  • D. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.

Answer: B,C

Explanation:
1. Querying VSSYSTEM_EVENTS for the event 'cell physical IO interconnect bytes returned by smart scan' will not be appropriate for monitoring the access on a particular table. The V$SYSTEM_EVENT view is used to monitor system-wide performance statistics, not specific table access. C. Querying v$SYSTAT for the statistic 'cell smart table scan' will not be appropriate for monitoring the access on a particular table as well. The v$SYSTAT view contains system-wide performance statistics, not specific table access.


NEW QUESTION # 31
Examine these commands:
1. Execute "crscti stop cluster -all" as the grid user from one database server.
2. Execute "crscti stop cluster -all" as root from one database server.
3. Power off all network switches.
4. Execute "crscti stop cluster" as root from one database server.
5. Execute "crscti stop cluster" as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute "shutdown -h now" on all database servers.
8. Execute "shutdown -h now" on all Exadata storage servers.
Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?

  • A. 5, 8, 7, and 6
  • B. 1, 8, 7, 3 and 6
  • C. 4, 7, 8, 3, and 6
  • D. 2, 8, 7, 3, and 6
  • E. 2, 7, 8, and 6

Answer: E

Explanation:
In order to completely power off an Exadata Database Machine in an orderly fashion, it's important to properly shut down the cluster first. The command "crscti stop cluster" as root should be executed from one of the database servers.
Once the cluster has been stopped, the next step is to shut down the database servers by executing the command "shutdown -h now" on all database servers.
Next, shut down the Exadata storage servers by executing the command "shutdown -h now" on all Exadata storage servers.
Finally, power off the rack using the power switches on the PDUs.


NEW QUESTION # 32
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?

  • A. With Secure Fabric isolation, each Database VM Guest uses a dedicated network partition and VLAN ID for client networking between application servers. This improves security by preventing man in the middle attacks.
  • B. With Secure Fabric isolation, each Storage Server runs multiple KVM guests each dedicated to a Database VM cluster using a dedicated network partition and VLAN ID. This provides security and isolation between multiple tenants or VM clusters.
  • C. With Secure Fabric isolation, each Database VM Cluster uses a dedicated network partition and VLAN ID for Data Guard networking between the primary and disaster recovery Exadata racks. This improves security by isolating data guard traffic onto an encrypted network between data centers.
  • D. With Secure Fabric isolation, each Database VM cluster uses a dedicated network partition and VLAN ID for cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.

Answer: D

Explanation:
Exadata Secure RDMA Fabric isolation is a feature that allows you to use virtualization on the X9M-2 platform while maintaining security and isolation between multiple tenants or VM clusters. Secure Fabric isolation works by creating a dedicated network partition and VLAN ID for each Database VM cluster, which is used for cluster networking between the database servers in the VM Cluster. This ensures that the network traffic of each VM cluster is isolated from the others, and it prevents unauthorized access to the data or resources of other VM clusters. Secure Fabric isolation can also be used for other purposes such as client networking, Data Guard traffic, but it's mainly used to provide security and isolation between multiple tenants or VM clusters.


NEW QUESTION # 33
Which two statements are true about Exadata System Software metrics and alerts on an Exadata Database Machine?

  • A. Metric alerts are never stateful.
  • B. Metric alert notifications can be sent to only one destination such as Enterprise Manager OR SNMP OR SMTP.
  • C. Metrics have no thresholds set on them by default.
  • D. SMTP metric alert notifications must be sent to both ASR manager and Enterprise Manager agents.
  • E. Metric thresholds, if set, will persist across storage and database server reboots.

Answer: C,E

Explanation:
Exadata System Software metrics and alerts work as follows:
Persistence of Thresholds: When metric thresholds are configured, they remain active and persist across server reboots. This ensures consistent monitoring behavior even after maintenance or unexpected reboots .
Default Metrics: By default, metrics are collected without predefined thresholds. Administrators must set custom thresholds to enable specific alerting based on their operational requirements.


NEW QUESTION # 34
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