Question 1

You are monitoring PMEM cache to see if it is being used effectively with RDMA. Which two of these sources contain information about the RDMA I/O statistics?

Options :

A : PMEM Cache Space Usage section in AWR Report

B : PMEM Cache User Reads section in AWR Report

C : Database lOs section in AWR Report

D : Database Statistics (v$ View)

E : Exadata Metrics (LIST METRICCURRENT)

Answer: B,E

Question 2

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

Options :

A :

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.

B :

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.

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

Question 3

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?

Options :

A : Exadata storage realms using ASM-scoped security mode

B : File permissions on the griddisks in each database server

C : Using EXADCLI instead of CELLCLI to create the griddisks

D : File permissions on the griddisks in each storage server

E : Exadata storage realms using database-scoped security mode

Answer: A,E

Question 4

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?

Options :

A :

YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.

B :

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'.

C : You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.

D :

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.

Answer: A,C

Question 5

How do ASM failure groups provide redundancy?

Options :

A :

Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.

B :

Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

C :

They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.

D : Extended Redundancy mirrors data across data centers providing the highest levels of data protection.

Answer: B

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