2014年6月17日星期二

Certification IBM de téléchargement gratuit pratique d'examen C2020-642 000-744, questions et réponses

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Code d'Examen: C2020-642
Nom d'Examen: IBM (IBM Cognos 10 BI Scorecard Developer)
Questions et réponses: 75 Q&As

Code d'Examen: 000-744
Nom d'Examen: IBM (DS4000 Technical Version 1)
Questions et réponses: 140 Q&As

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NO.1 When creating a FlashCopy of a logical drive, a repository logical drive is created. The repository
logical drive is for metadata and copy-on-write data when a change is made to the FlashCopy source
logical drive. By default, what is its size?
A. 10% of the source volume
B. 20% of the source volume
C. 50% of the source volume
D. 100% of the source volume
Answer: B

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NO.2 A customer is combining two separate IT operations in one central location. They are using a DS4800.
Performance has been marginal. You look at the DS4800 Performance Monitor and observe that they are
well within the DS4800 performance specifications. Which tool can be used to determine the cause of the
problem?
A. Capacity Magic
B. Bandwidth Estimator
C. IOMeter
D. Disk Magic
Answer: D

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NO.3 What is the minimum number of HDDs required for RAID 6?
A. 1
B. 2
C. 3
D. 4
Answer: D

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NO.4 Three hosts are redundantly connected to a DS4000 system. Two are running a non-clustered
Windows 2003 Server and the other is running Red Hat Linux. How many Storage Partitions are used in
this configuration?
A. 0
B. 1
C. 3
D. 8
Answer: C

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NO.5 Which statement about DS4000 firmware upgrades is true?
A. The controller firmware and NVSRAM files are closely tied to each other and must be installed in the
proper combination.
B. Controller firmware and NVSRAM upgrades always require the ESM firmware to be upgraded at the
same time.
C. Only one controller must be accessible via the Ethernet or fiber in order to perform a controller
firmware upgrade.
D. The controller firmware and NVSRAM are independent from each other and can be upgraded at
different times.
Answer: A

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NO.6 You have been called in to assist the storage administrator who has been using Global Mirror with an
Enhanced Remote Mirroring (ERM) configuration to mirror the company inventory database from
headquarters to a data warehouse at a remote site. The storage administrator has been re-evaluating this
approach and needs your help to change the mirroring mode to Metro Mirroring for better control over
data going to the remote site. What must you do to help the storage administrator make the change?
A. advise the storage administrator to purchase two new licenses
B. break and re-establish the mirror relationship
C. back up the inventory data to tape
D. make the mode change in Storage Manager
Answer: D

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NO.7 You arrive at a customer site to implement the DS4000 solution and find that the customer wants to use
RAID 1+0 instead of RAID 5 for everything. What is a possible concern in this situation?
A. capacity
B. random IO performance
C. throughput performance
D. disk rebuild times
Answer: A

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NO.8 Which statement is FALSE regarding hot spare drives in the DS4000 subsystem?
A. The storage server will attempt to find a spare in the same enclosure as the failed drive first.
B. The storage server will give preference to a spare the same size as the failed drive.
C. The storage server will use a spare with at least the same capacity as the failed drive.
D. The controller may use a spare that is larger than the failed drive and block the remaining capacity
from use.
Answer: B

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