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E20-880Exam Code: E20-880
Exam Name: VNX Solutions Expert Exam for Technology Architects
One year free update, No help, Full refund!
E20-880 Practice Test Total Q&A: 128 Questions and Answers
Last Update: 2014-05-03

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E20-007Exam Code: E20-007
Exam Name: Data Science and Big Data Analytics
One year free update, No help, Full refund!
E20-007 Test Questions Total Q&A: 165 Questions and Answers
Last Update: 2014-05-03

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NO.1 A customer is checking a NAR file in Unisphere Analyzer. They see that a RAID Group with only a single
LUN is shown with consistently large Disk - Average Seek Distances.
What could this indicate?
A. Randomness of the I/O
B. Write utilization
C. LUN misalignment
D. Applicationburstiness
Answer: A

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NO.2 A customer has created a thin LUN, enabled compression on a LUN Pool, and installed their Exchange
environment. The Exchange application is showing poor performance.
Which workload characteristic of Exchange would produce poor access times on a compressed LUN?
A. Small random writes
B. Small random reads
C. Sequential reads
D. Uncompressed or host based data
Answer: A

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NO.3 Which action would be most effective in reducing the performance impact of a Snapshot on a Source
LUN?
A. Using faster disks for the Source LUN
B. Using faster disks for the Reserved LUN Pool
C. Increasing the Snapshot chunk size
D. Increasing the Snapshot write-aside size
Answer: A

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NO.4 You are migrating a backup application that runs on physical servers to a VDC. The VDC storage is
currently a VNX configured with NL-SAS drives only. Your customer is concerned about the cost to
achieve reasonable performance. You are designing the VMs that will support the application.
Based on cost, which would be the first solution you would recommend?
A. VMware Paravirtual SCSI virtual adapter
B. Virtual adapter is BusLogic Parallel
C. FAST VP Pool (Flash and SAS drives)
D. SAS RAID Group
Answer: A

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NO.5 Your customer is designing a Proof of Concept with SQL Server attached to a VNX. The storage
design includes seven LUNs on a RAID Group. The system is generally very heavily loaded, with a
particularly high load on the cache. This is a very carefully controlled environment and your customer has
asked for assistance in planning the layout of the LUN location on the physical spindles.
Where in the RAID Group would you recommend placing the two heavily used LUNs for a short-stroked
architecture?
A. Adjacent to each other at the beginning
B. One at beginning and one at the end
C. Adjacent to each other in the middle
D. Evenly placed, as non-adjacent as possible
Answer: A

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NO.6 A customer would like to configure their VNX for File for the highest possible level of client availability.
There are five Ethernet ports on a single DataMover and a single Ethernet switch available for client
communications.
What availability features would you recommend to the customer?
A. Link Aggregation Control Protocol only
B. EtherChannel port aggregation and Fail Safe Networking
C. Fail Safe Networking and Link Aggregation Control Protocol
D. EtherChannel port aggregation only
Answer: A

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NO.7 A VNX storage system is being configured to provide storage for an Exchange 2010 implementation for
2,000 users. Performance and reliability are more important than cost for the customer.
What RAID configuration should be used?
A. A RAID 1/0 Group, spread across two DAEs on two separate storage system busses
B. Two RAID 5 Groups in a striped metaLUN across two DAEs, one from each back end bus
C. A RAID 1/0 Group on a single DAE
D. A RAID 6 Group which can accommodate two simultaneous drive failures
Answer: A

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NO.8 A customer is in the design phase of their SQL server implementation. They request your guidance
concerning the number of disk drives needed to properly configure the database for performance. The
current utilization of the database is shown below:S
-85% reads and 15% writes
-10K SAS disks
-RAID 1/0
-1150 IOPS
What is the minimum number of disk spindles required to service the random I/O requests during usage of
the SQL Server database?
A. 8
B. 10
C. 12
D. 14
Answer: B

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Posted 2014/5/4 13:10:37  |  Category: EMC  |  Tag: E20-880E20-007EMC