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Dell E20-555 Exam Practice Questions (P. 3)

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Question #21
A customer is planning an Isilon deployment for use with their Hadoop environment. What is one advantage of using Isilon as the HDFS layer?
  1. A
    Facilitates independent scaling of compute and storage nodes
  2. B
    Provides single protocol access to data
  3. C
    Integrates storage into Hadoop compute for more flexibility
  4. D
    Allows the compute nodes to apply data protection

Correct Answer:
A

Question #22
A customer has an Isilon cluster that they want to simplify a Hadoop workflow. The workflow analyzes large amounts of log data written to storage using FTP and results are viewed by Microsoft Windows clients?
How can this be achieved?
  1. A
    FTP, SMB, and HDFS NameNode and DataNode protocol support on the same file system to enable each workflow step to access data from the same location avoiding data migration.
  2. B
    SyncIQ to migrate the log data between an Isilon cluster and another Hadoop cluster, to retrieve results from the Hadoop cluster, and to store them in an SMB share.
  3. C
    SmartConnect to direct clients to an external Hadoop NameNode and to SMB shares so data ingest, analytics, and results phases are transparently directed.
  4. D
    FTP and SMB protocol support to provide log ingest and Windows clients; SmartPools will stub to HDFS helping to reduce the frequency of external data

Correct Answer:
A

Question #23
A company wants to reduce the footprint in their data center. They recently completed a proof of concept with Hadoop using Direct Attached Storage (DAS) for their Big Data initiative. You have determined that incorporating an Isilon cluster into their Hadoop environment would help in reducing this footprint.
Which Hadoop components can be consolidated onto the Isilon cluster to reduce the footprint?
  1. A
    DataNode and NameNode
  2. B
    DataNode and ComputeNode
  3. C
    ComputeNode and NameNode
  4. D
    NameNode and TaskTracker

Correct Answer:
A

Question #24
Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4- node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.
They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec, with a 30 days retention policy.
How many nodes of the same type will you need to add in order to meet the required changes and not exceed 70% raw capacity?
  1. A
    8 nodes
  2. B
    4 nodes
  3. C
    12 nodes
  4. D
    16 nodes

Correct Answer:
A

Question #25
Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4- node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.
They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec with a 30 days retention policy.
Which storage capacity would be the best suited to meet the required changes and utilize 65-75% capacity?
  1. A
    110 TB
  2. B
    80TB
  3. C
    140TB
  4. D
    50TB

Correct Answer:
A

Question #26
You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system.
In general, how should the solution be presented to the customer?
  1. A
    VNX for image cache; Isilon NL-Series nodes for image archive
  2. B
    Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive
  3. C
    Isilon NL-Series nodes for image cache and image archive
  4. D
    VNX for image cache and image archive

Correct Answer:
A

Question #27
You meet with the IT Director of a large single site campus. The IT department has recently taken over Physical Security from the facilities department and plans a complete overhaul of the surveillance solution. They are looking to you as a storage architecture expert to provide the correct amount of storage needed. The IT
Director asks you what items they need to provide in order to size this solution.
What data do you require from the customer?
  1. A
    Resolution CODEC Frames Per Second (fps) Number of Devices Retention Time
  2. B
    Pixel Count CODEC Color Sampling Frames Per Second (fps) Number of Devices Retention Time
  3. C
    Pixel Count CODEC Color Sampling Frames Per Second (fps) Number of Devices Video Management System Evidence Collection Period
  4. D
    Bit rate per camera Camera Manufacturer Video Management System Retention Time

Correct Answer:
A

Question #28
A four-node Isilon cluster is being used in a Hadoop workflow with a parity protection of N+2:1. The HDFS protocol has been enabled and is being used to access data.
How many additional copies of data are written into the Isilon cluster using HDFS?
  1. A
    None
  2. B
    One
  3. C
    Three
  4. D
    Two

Correct Answer:
A

Question #29
Your customer has a new business unit. They are gathering web log files to be analyzed. They are using Hadoop to do the analysis of the logs. The IT department is centrally storing the log files on a 5-node Isilon cluster. They have enabled the Hadoop cluster to access the files directly on the Isilon storage. The nodes are
X400's with two SSD drives in each node and 96GB of RAM.
How many DataNodes does the Isilon cluster have?
  1. A
    Five
  2. B
    One
  3. C
    Three
  4. D
    Two

Correct Answer:
A

Question #30
A media and entertainment company has asked for help in creating a new Video On Demand (VOD) storage system. The storage would be delivered to 5000 subscribers simultaneously. They would like to store 5000 hours of full length, High Definition (HD) movies.
What would be the best price-to-performance nodes for this solution?
  1. A
    X400 with no SSD and 96GB RAM
  2. B
    X200 with no SSD and 48GB RAM
  3. C
    Mixed X400 48GB RAM and NL400 24GB
  4. D
    X400 with 1.6TB SSD and 24GB RAM

Correct Answer:
A

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