1Z0-902 Online Practice Questions and Answers
Which are two valid reasons for executing an X9M-2 Exadata storage server rescue procedure?
A. the failure of physical disk 1
B. corruption in the / (root) filesystem
C. the failure of both physical M.2 disks
D. the failure of physical disk 0 and 11
E. moving all disks from one cell to another as part of a chassis-level component failure
F. accidental loss of all data from all griddisks in a storage server
G. corruption in a normal or high redundancy ASM diskgroup
Which three statements are true about the CELLCLI command?
A. It can execute commands on multiple storage servers in parallel.
B. It has command-line history.
C. It requires root privileges to create CELLDISKS and GRIDDISKS.
D. It can be executed on storage servers.
E. It can be executed using the DCLI utility.
Which statement is true about the Persistent Memory Commit Accelerator?
A. Persistent Memory Commit Accelerator tracks changes to Persistent Memory Data Accelerator to ensure duplicate blocks are not written to Flash.
B. Persistent Memory Commit Accelerator helps to further reduce redo log write latency by using Persistent Memory and Remote Direct Memory Access (RDMA).
C. Persistent Memory Commit Accelerator copies redo log data from disk for faster redo apply on Data Guard Standby Databases.
D. Persistent Memory Commit Accelerator contains logging information from all tiers of the software stack for rapid triage and diagnostics.
E. Persistent Memory Commit Accelerator reduces redo log write latency by using Persistent Memory and RDMA before flushing to Flash then disk.
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?
A. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
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 sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
You are going to create an ACFS Filesystem for use as a staging area for data loads. Examine the following commands:
What steps and in which order should they be executed?
A. 6, 2, 1, 8, 4, 5
B. 6, 8, 3, 4, 2, 1
C. 6, 3, 1, 9, 7, 8
D. 6, 1, 2, 7, 5, 8
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?
A. OECA reconfigures the size of disk groups and recreates grid disks.
B. OECA extends the hardware for the elastic configuration only.
C. OECA allows one XT storage server in the configuration.
D. OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.
E. OECA facilitates PDU power selection initially and after equipment addition.
Which two statements are true about enabling write-back flash cache?
A. Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations.
B. Write-back Flash Cache cannot be used on Extreme Flash Storage Servers.
C. When enabling write-back flash cache in a rolling manner, DBCLI should be used to inactivate the grid disks on all cells first.
D. Before write-back flash cache is enabled, you need to drop the Flash Cache first.
E. When enabling write-back flash cache in a non-rolling manner, you need to drop the Persistent Memory Commit Accelerator (PMEMLog) first.
Which two sections of the AWR report shows statistics for X9M Persistent Memory Cache?
A. PMEM Pool cache Read Hits in the Cache Sizes portion of the Report Summary
B. PMEM Pool Misses in the Exadata Outlier Summary
C. cell PMEM cache Read Hits in the Database IOs portion of the Performance Summary
D. PMEM Cache section within Memory Statistics
E. PMEM Cache section within Exadata Smart Statistics
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