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Code d'Examen: E20-385
Nom d'Examen: EMC (E20-385 Data Domain Specialist Exam for Implementation Engineers)
Questions et réponses: 116 Q&As

Code d'Examen: E20-555
Nom d'Examen: EMC (Isilon Solutions and Design Specialist Exam for Technology Architects)
Questions et réponses: 225 Q&As

Code d'Examen: E20-554
Nom d'Examen: EMC (Isilon Design Specialist Exam for Technology Architects)
Questions et réponses: 81 Q&As

Code d'Examen: E20-891
Nom d'Examen: EMC (Backup Recovery Solutions Expert Exam for Technology Architects)
Questions et réponses: 118 Q&As

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NO.1 You have had several discussions with your customer in the processor design industry. They
have stated that they want a Scale-Out NAS platform for their design environment. Their most
significant responses were "We have 125 design engineers accessing large diagrams and we need
high throughput to support them. Can we also get the highest performance available? We need to
stay ahead of our competitors." Other areas you discussed were their data retention policies and
workflow after the chip design is completed. They plan to archive the design files but the files must
stay on line.
What is your initial node recommendation?
A. A-Series nodes for the active diagrams and X-Series nodes for the archives.
B. S-Series nodes for the active diagrams and NL Series nodes for the archives
C. X-Series nodes for the active diagrams and NL 400 nodes for the archives
D. X-Series nodes with SSD for the active diagrams and NL nodes for the archives
Answer: B

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NO.2 Your customer purchased an Isilon cluster with eight X400 nodes for Home Directories. Your
follow-up discussions have uncovered an opportunity to expand the cluster to support the Legal
Department. As you prepare to complete the Workflow Profile Document, you meet with the
customer to discuss data protection.
Which key areas should you address?
A.Default cluster protection level Additional directory level protections Snapshots and replication
B.WORM requirements Network ports for replication Snapshots for user restores
C.Default cluster protection level Backup windows and processes Concurrency of user access
D.Protocols (SMB, NFS, FTP , HTTP , HDFS) Authentication and Directory Services Performance and
latency concerns
Answer: A

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NO.3 You set up a meeting to gather information on a new project with the IT manager and plan to
use a workflow profile assessment (WPA) to document the requirements.
Why is it recommended to talk to as many stakeholders as possible?
A. Completing this document gives sales a list of who the stakeholders are at customer site.
B. Helps downstream personnel, such as implementation and delivery, to have a clearer
understanding of the requirements.
C. Using workflow profile enables sales to take this information to EMC consulting for review to
validate the configuration.
D. Using the WPA tool will give you the best "big picture" to see things such as block size, de-dupe,
file size and volumes.
Answer: B

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NO.4 When conducting high-level interviews with stakeholders of a project, what are the key
questions that should be asked?
A.How much usable storage are you looking for? What client OS will access this storage? Which
applications will access this storage?
B.Which backup application is in use today?
What is your change rate?
How many clients will connect to the cluster?
C.What does your network architecture look like?
Do you have existing NAS infrastructure?
Do you have 10Gb or 1Gb ethernet?
Which applications will access this storage?
D.Who are the application owners?
How much usable storage is needed?
What applications will be accessing the storage?
How many users are in your Active Directory?
Answer: A

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NO.5 When designing Isilon solutions, which issue should you pay special attention to?
A. Create a workflow document
B. Conduct stakeholder interviews
C. Follow all SSD sizing rules
D. Meet customer expectations
Answer: D

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NO.6 You meet a customer for the first time. They explain that their current environment for NAS
does not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?
A. What applications access this storage?
B. What type of racks are in your datacenter?
C. Are you using a KVM to access your storage?
D. How many NICs do your clients have?
Answer: A

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NO.7 You meet a customer for the first time. They explain that their current environment for NAS
does not meet their needs. You want to make sure that Isilon is a good fit for their needs.
What would be a good prequalifying question to ask?
A. What application are you using to create directories?
B. Is your datacenter ISO9001 compliant?
C. What protocols are accessing your NAS?
D. How many users are in your Directory Services?
Answer: C

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NO.8 What key considerations should be kept in mind when designing a 300TB solution?
A.Workflow management Defining class of service Time of day services RPO and RTO Data retention
and backup
B.Defining class of service Time of day services ROI and TCO Data retention and backup
C.SmartPools Smartconnect Snapshots Space for snapshots
D.Always include 2% SSD SmartPools Smartconnect Snapshots InsightIQ
Answer: A

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NO.9 When designing Isilon solutions, what issues should you pay special attention to?
A.Avoid being too enthusiastic over the technology Balance technical and business requirements
Provide options Design to meet customer expectations
B.Workflow Document Solutions Document Application types Data strategy
C.Solutions Document Balance technical and business requirements Provide options Practical vs.
theoretical implementations
D.Solutions Document Balance technical and business requirements Downstream hand-off Design
to meet customer expectations
Answer: A

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NO.10 You are reviewing an opportunity with a trusted advisor. You both discover gaps in the initial
solution design.
Each iterative discussion with the customer helps you define the solution better. The documents
produced capture the customer's requirements.
What else needs to occur to refine the sizing considerations?
A. Complete your Solution Design Document and forward to EMC consulting.
B. Validate the Workflow Profile Assessment and test the solution against your findings.
C. Review you assumptions and ask the customer what business issue you're solving.
D. Provide the CIO with the findings and gain commitment to a Proof of Concept.
Answer: B

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Code d'Examen: E20-555
Nom d'Examen: EMC (Isilon Solutions and Design Specialist Exam for Technology Architects)
Questions et réponses: 225 Q&As

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NO.1 What is the maximum volume or aggregate size that can be created with an Isilon Scale-Out
NAS system?
A. 16 TB
B. 100 TB
C. 2.3 PB
D. 20 PB
Answer: D

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NO.2 When an Isilon SyncIQ replication job completes, how many SnapshotIQ policies can be
created on a target cluster directory?
A. 1
B. 2
C. 3
D. 4
Answer: D

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NO.3 A customer is making a decision between Isilon and a competitor's offering. They currently
have 100TB of usable capacity and are forecasting 100% growth per year for the next three years,
which will require them to lease additional space in their co-located data center. The CFO finds ROI
and TCO to be important decision criteria.
Which statement best emphasizes the value of Isilon for this customer?
A. Isilon's OneFS data protection policies offer substantially lower overhead than competitive RAID
based NAS solutions.
B. An IDC study found that Isilon requires 95% less down time hours per year compared to other
competitors.
C. The competition cannot offer a scale-out NAS so as capacity is added to the array, performance
may degrade.
D. Isilon's OneFS allows administrators to manage much larger amounts of capacity than
competitive offerings.
Answer: A

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NO.4 A customer created one month of snapshots; one snapshot every 8 hours for 30 days on an
Isilon cluster using SnapshotIQ. They are now deleting the snapshots randomly and experiencing
overhead to the cluster.
How can the snapshots be removed while avoiding the overhead caused by this process?
A. Delete the snapshots in order
B. Use SmartPools to move the snapshot data to a different tier
C. Snapshots cannot be deleted
D. Remove the directory
Answer: A

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NO.5 If Isilon SmartConnect is being configured in a customer environment, which records are
required for a supported implementation?
A. A SmartConnect Service IP host record and a zone delegation for the SmartConnect zone
delegated to the SSIP
B. An overloaded host record with each SmartConnect zone member's IP address and an SRV record
to provide resolution services
C. A SmartConnect Service IP host record and a corresponding PTR record for each SmartConnect
zone
D. A SOA record for the SmartConnect Service IP and a corresponding CNAME record for each
SmartConnect zone
Answer: A

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NO.6 -- Exhibit -
We have been engaged by a research hospital to help upgrade their Isilon installation.
They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps
network.
They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data.
They would like to expand Isilon to 2PB of active data and 1PB of archive data.
They use a third party data and metadata management service (IRODs) to stage data for analysis.
The Isilon cluster is mainly used for analysis work with the HPC cluster.
-- Exhibit -
The customer will add two more Illumina Hi-Seq Sequencers in the next 6 months.
Once these are added, what is the total amount of data from all the sequencers they can expect to
add per month?
A. 9.6 TB
B. 4.8 TB
C. 1.2 TB
D. 14.4 TB
Answer: A

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NO.7 At a minimum, how many connected and available nodes are required to maintain quorum in
a 25-node cluster?
A. 10
B. 12
C. 13
D. 17
Answer: C

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NO.8 An Isilon customer expressed an interest in more effectively managing their storage.
Specifically, they would like to plan for future growth.
Which tool would allow the customer to forecast capacity requirements?
A. InsightIQ
B. Isilon SNMP MIB
C. SyncIQ
D. SmartPools
Answer: C

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NO.9 A NetApp customer is considering Isilon. They use their filers for UNIX home directories, and
would like to see a suggested configuration that would meet their needs.
What would you do to help size this cluster?
A. Ask for an autosupport file and upload it to MiTrends to generate a workflow profile
B. Ask them to install InsightIQ and collect data from the filer, then import to SQL for analysis
C. Ask for the output from nfsstat and upload it to MiTrends to generate a workflow profile
D. Use tcpdump and upload the output file to MiTrends to generate a protocol analysis
Answer: C

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NO.10 -- Exhibit -
A large manufacturing company is an existing Isilon customer with a cluster consisting of four NL400
nodes with 4TB drives. The cluster is using N+2:1 protection level and the file system shows that it is
60% utilized. Home directories and file shares comprise 75% of the existing content and the
remainder is inactive deep archive. The company has 1,000 employees using Windows and Mac
clients participating in a single Active Directory (AD) forest.
During a meeting with the CIO and Director of IT you discuss the company's recent acquisition - an
engineering firm that specializes in Computer Aided Design (CAD). The engineering firm has 400
UNIX workstations that produce technical drawings which are currently stored on another vendor's
SAN solution. The all UNIX environment uses NIS for authentication and name resolution. They do
not currently use DNS or LDAP . The engineering company has an old storage system that has been
experiencing problems and the CIO would like you to migrate the data onto the Isilon cluster. The
CIO would like to eliminate all tape and recover the data onto disk.
The CIO is concerned about security of the company's intellectual property, especially with the rapid
adoption of mobile devices and external cloud content sharing services such as DropBox, Egnyte,
and SugarSync. They would like to implement an alternative that provides external file sharing and
mobile device synchronization while maintaining security control over the company's data.
The Director of IT reports that users are storing non-work related content on the Isilon cluster. They
would like to limit the amount of capacity that each user can consume in their home directory and
want to ensure you provide the capability to easily visualize which users are over their
allotment.The company's Windows users currently leverage Windows Shadow Copy to recover files
that have been accidentally deleted. The IT department wants to ensure that Mac and incoming
UNIX clients have the same functionality.
The Director of IT also mentions that users are reporting slow response times when browsing their
home directories and shared folders. They are concerned that Isilon cannot scale to support their
combined requirements.
-- Exhibit -
Based on the meeting with the customer, which Isilon cluster configuration would you recommend?
A. 4 x X400 nodes with 2 x SSD and 34 x 4TB drives 1 x Additional NL400
B. 6 x X400 nodes with 36 x 4TB drives 1 x Backup Accelerator
C. 4 x NL400 nodes with 36 x 4TB drives
D. 9 x S200 nodes with 2 x SSD and 22 x 900GB SAS
Answer: A

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NO.11 Your customer uses an existing Isilon cluster consisting of five NL-Series nodes to source
broadcast media files for playback and streaming.The customer reports that the playback pauses
and stutters regularly. It has been confirmed that there are no network or playback system issues.
Which of the choices listed is the appropriate choice to address the playback issues?
A. Add three or more S-Series Nodes
B. Upgrade OneFS to the latest version
C. Enable SmartConnect Advanced
D. Enable Level 2 Caching
Answer: A

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NO.12 An Isilon customer created a scheduled SyncIQ policy to replicate data from an
Enterprise-mode SmartLock directory. The source cluster is now unusable and the target cluster
does not automatically allow writes to the data in the replicated SmartLock directory.
What is the reason why the target cluster did not automatically allow writes of the data?
A. SyncIQ Automated failover is not supported for SmartLock directories; however, manual failover
is allowed.
B. Automated failover and manual failover are not allowed on SmartLock directories on the target
cluster.
C. A SyncIQ job was running while the source cluster became unusable, thereby removing all data
on the target directory.
D. SnapshotIQ was not licensed on the target cluster; the snapshot of the directory is not available
for use by SyncIQ.
Answer: A

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NO.13 What does Isilon OneFS use to re-write data when a disk read fails?
A. Dynamic Sector Repair
B. NVRAM
C. Isilon Data Integrity
D. CRC
Answer: A

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NO.14 A Media and Entertainment company is considering changing from 2K resolution to 4K
resolution. They will continue to use the DNxHD 220 codec.
Assuming everything else stays the same, how will this change affect storage?
A. Storage will be half as large
B. Storage requirements will not change
C. Storage will be twice as large
D. Storage will be four times as large
Answer: B

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NO.15 An Isilon customer has an environment supporting a wide range of different workloads. They
want to assign clients to performance tiers based on the resources needed.
What can the customer use to meet this requirement?
A. SmartConnect Zones
B. Load Balancing
C. Client Connection Zone
D. SmartPools Advanced
Answer: A

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