Oracle 1Z0-902 問題集

質問 1：
An Exadata storage server physical disk on an X9M-2 high-capacity full rack entered the predictive failure state. Which two steps must you perform to replace this failed physical disk?
A. Add the griddisks back into the ASM diskgroup they used to be a member of.
B. Replace the failed physical disk.
C. Rebalance the data on the effected griddisks before performing a manual drop command.
D. Create a new celldisk and new griddisks on the replaced physical disk.
E. Verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.
F. Identify the griddisks located on the failed physical disk and drop them from the associated ASM diskgroups.
正解：B,F
解説: (Topexam メンバーにのみ表示されます)

質問 2：
You use Enterprise Manager to monitor all the components of your Exadata Database Machine.
Recently, you discovered that certain asmdisks were offline in one of the diskgroups used by the rac database called prod.
In which two sources would you find diagnostic messages related to this problem?
A. alert logs for the ASM instances
B. alert logs for the prod database instances
C. Enterprise Manager Alerts on the ILOM home page for cell connectivity problems for the prod database instances
D. alert logs for Enterprise Manager
E. Enterprise Manager Alerts on the Exadata Storage Server Grid home page
正解：A,B
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Which two statements are true about enabling write-back flash cache?
A. Write-back Flash Cache cannot be used on Extreme Flash Storage Servers.
B. Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations.
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. When enabling write-back flash cache in a non-rolling manner, you need to drop the Persistent Memory Commit Accelerator (PMEMLog) first.
E. Before write-back flash cache is enabled, you need to drop the Flash Cache first.
正解：B,E
解説: (Topexam メンバーにのみ表示されます)

質問 4：
You are in the process of upgrading your nonvirtualized X9M-2 Database Machine elastic configuration with 4 database servers and 7 HC storage servers with an additional 4 database servers and 7 HC storage servers.
The new storage servers are called DM01CEL08 through dmoicel14.
After creating 96 new griddisks, you issued this SQL statement:

How many failgroups if any, will be added to the DATE diskgroup by executing this SQL statement?
A. 7 consisting of 12 griddisks each
B. 0 because the new griddisks will be added to the existing faiigroups
C. 1 consisting of all 96 griddisks
D. 12 consisting of seven griddisks each
E. 96 consisting of one griddisk each
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 5：
You are planning the monitoring configuration for your Exadata X9M Database Machine.
Which three components are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins?
A. Oracle clusterware on the database server
B. the Power Distribution Units (PDUs)
C. ASM instances
D. the storage server ILOM
E. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers
F. the RDMA over Converged Ethernet (RoCE) switches
正解：B,D,F
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?
A. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.
B. ZFS Snapshots can provide rapid cloning of development and test environment.
C. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
D. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
正解：A,D
解説: (Topexam メンバーにのみ表示されます)