Oracle Exam 1Z0-902 Topic 8 Question 57 Discussion

Actual exam question for Oracle's 1Z0-902 exam

Question #: 57
Topic #: 8

Which three statements are true about the Grid Infrastructure configuration after a nonvirtual deployment of a new Exadata Database Machine with a single cluster?

AThree Single Client Access Name (SCAN) listeners are configured on the RDMA over Converged Ethernet (RoCE) network.

BThe OCR is multiplexed in the DATA_<DBM__NAMe> and RECo_<dbm_name> diskgroups.

CGrid Infrastructure uses the management network as the cluster interconnect.

DThe ora. diskmon clusterware resource is enabled and online.

EThree Single Client Access Name (SCAN) listeners are configured on the client access network.

FGrid Naming Service (GNS) is not configured.

Show Suggested Answer

Suggested Answer: A, B, D

For a non-virtual deployment of Oracle Exadata with a single cluster:

Single Client Access Name (SCAN) Listeners: By default, three SCAN listeners are configured on the RDMA over Converged Ethernet (RoCE) network. This setup allows for load balancing and high availability of incoming client connections across the cluster nodes.

Oracle Cluster Registry (OCR) Multiplexing: The OCR is typically stored in multiple locations within the disk groups to enhance reliability and fault tolerance. On Exadata, the OCR is multiplexed across the DATA and RECO disk groups for enhanced resilience.

ora.diskmon Resource: This is an essential component of Oracle Clusterware, responsible for monitoring and managing disk-related cluster resources. It is always enabled and kept online by Oracle Clusterware on Exadata systems.

by Fabiola at Dec 09, 2024, 11:04 PM

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Freeman

4 months ago

Ah, the joys of Exadata trivia! I'm confident that the answer is B, E, and F. The OCR is multiplexed in the DATA and RECO diskgroups, GNS is not configured, and the SCAN listeners are on the client network. Now if only I could remember the exact names of those diskgroups...

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Salome

3 months ago

Yes, that's correct. GNS is not configured in this scenario.

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Douglass

3 months ago

And you're spot on about the SCAN listeners being on the client network.

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Lang

3 months ago

I think you're right! The OCR is indeed multiplexed in the DATA and RECO diskgroups.

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Isreal

4 months ago

I'm not sure about statement E though. Having SCAN listeners on the client access network seems unusual to me.

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Gretchen

4 months ago

This question is like a riddle wrapped in an enigma! Let's see, I think the answer is B, E, and F. The OCR being multiplexed in the DATA and RECO diskgroups sounds right, and GNS is definitely not configured in a non-virtual Exadata deployment. But I'm scratching my head on the SCAN listeners.

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Emeline

3 months ago

I agree with both of you. A, B, and F are the correct statements about the Grid Infrastructure configuration after a nonvirtual deployment of a new Exadata Database Machine with a single cluster.

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Yasuko

3 months ago

I see your point, but I'm pretty sure C is one of the correct statements. Grid Infrastructure actually uses the management network as the cluster interconnect.

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Chanel

3 months ago

I think you're right about B and F, but I believe A is also true. The SCAN listeners are configured on the RDMA over Converged Ethernet network.

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Micheline

4 months ago

I believe statement C is also true. The management network is commonly used as the cluster interconnect in Grid Infrastructure.

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Audry

4 months ago

I'm going with B, E, and F. The OCR is multiplexed in the DATA and RECO diskgroups, and GNS is not configured in a non-virtual Exadata deployment. But I'm a bit uncertain about the SCAN listeners being on the client network.

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Francine

4 months ago

Haha, these questions are always tricky! I think the answer is B, D, and E. The ora.diskmon resource must be enabled, and the SCAN listeners are on the client network, not the RoCE network. But I'm not sure about the OCR being multiplexed in those specific diskgroups.

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Alyce

3 months ago

Yeah, these questions can be tricky to decipher sometimes.

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Hermila

3 months ago

I'm not sure about the OCR being multiplexed in those specific diskgroups either.

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Lynelle

4 months ago

I believe the SCAN listeners are actually on the client access network, not the RoCE network.

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Michell

4 months ago

I think you're right about the ora.diskmon resource being enabled.

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Lucia

4 months ago

I agree with Isreal. Having SCAN listeners on the RDMA network makes sense for performance.

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Isreal

4 months ago

I think statement A is true because SCAN listeners are usually configured on the network used for RDMA.

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Aide

5 months ago

I'm pretty sure the answer is B, E, and F. The OCR is multiplexed in the DATA and RECO diskgroups, and the SCAN listeners are on the client network, not the RoCE network. And GNS is not configured in a non-virtual Exadata deployment.

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