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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q62-Q67):

NEW QUESTION # 62
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$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
B. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.
C. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.
D. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.

Answer: C,D

Explanation:
1. 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.
2. 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 # 63
You are hardening the security posture of your Exadata Database Machine. Before disabling ssh access to the storage servers, what should you do to enable REST access to the MS process?

A. The MS Process on the storage servers is natively endowed with REST services and are enabled by default, however, appropriate roles and users should be created to ensure security.
B. Install Oracle Rest Data Services on each Database server and install the MS APEX application.
C. Install Oracle Rest Data Services on each Storage server and install the MS APEX application.
D. The MS Process on the storage servers is natively endowed with REST services, but are not enabled by default.

Answer: A

Explanation:
The MS process on Exadata storage servers is natively endowed with REST services and these services are enabled by default. However, it is important to create appropriate roles and users to ensure security when accessing these services. This way, it is possible to disable ssh access to the storage servers, and still enable REST access to the MS process. It's not necessary to install Oracle Rest Data Services on each Database or Storage server or install the MS APEX application, the MS process on the storage servers already have REST services by default.

NEW QUESTION # 64
Which two statements are true about the initial storage configuration after the standard (non-virtualized) deployment of a new Exadata Database Machine with High Capacity storage servers?

A. The sparse_<DBM_NAME> diskgroup is created automatically.
B. The DATA_<DBM_Name> and RECO_<DBM_NAME> ASM diskgroups are built on with DATA on the outer-most tracks and RECO on the inner-most tracks of the physical disk.
C. There is free space available on flashdisks inside the Exadata storage servers to configure Exadata Smart Flash Logs.
D. There is free space available on flashdisks inside the Exadata storage servers for possible use for storage indexes.
E. There is free space available on the hard disks inside the database servers for possible extension of the /uoi file system.

Answer: B,C

NEW QUESTION # 65
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

A. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
B. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.
C. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
D. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.

Answer: A,C

Explanation:
C) OEDA deployment steps include calibrate cells, create cell disks, and resecure machine2.
D) OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA2.

NEW QUESTION # 66
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

A. OECA facilitates PDU power selection initially and after equipment addition.
B. OECA reconfigures the size of disk groups and recreates grid disks.
C. OECA extends the hardware for the elastic configuration only.
D. OECA allows one XT storage server in the configuration.
E. OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.

Answer: B,E

Explanation:
The correct answers are Options A and D. Option A is correct because OECA reconfigures the size of disk groups and recreates grid disks. Option D is correct because OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.

NEW QUESTION # 67
......

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