EMC E20-555 Online Practice Questions and Exam Preparation

EMC E20-555 Online Questions & Answers

• Question 1:

  An Isilon customer has two 5-node clusters; one for production and one for disaster recovery (DR). The customer's workflows are replicated to the DR cluster through SyncIQ on individual schedules. They shut down their production cluster for a scheduled DR test, failed over to the DR cluster, and continue their DR testing.

  Assume both clusters have identical shares, exports, and user authentication. Additionally, assume the client applications have been stopped and the DNS re-pointed. Which SyncIQ Policy method should be used to continue production operations?

  A. Revert
  B. Initiate Manual Failback
  C. Initiate Automated Failback
  D. No change is needed
  A. Revert

• Question 2:

  A customer has an SMB file directory with 375 TB of data on the primary cluster with a protection level of N+3:1. They want to replicate this directory to the secondary cluster. They are interested in the possibility of setting protection levels on the target cluster.

  Which target directory protection level information can be provided?

  A. Does not need to match the source and is configured separately on the target cluster
  B. Must match the source and is configured separately on the target cluster
  C. Cannot be altered and is controlled by SyncIQ
  D. Can be altered by the command line interface and is controlled by SyncIQ
  A. Does not need to match the source and is configured separately on the target cluster

• Question 3:

  A customer has a cluster consisting of six H500 nodes (in one full chassis and one half populated chassis) and four A200 nodes (in one full chassis). The customer wants to expand their A200 nodes. What is the minimum number of A200 nodes and chassis the customer can add to the cluster?

  A. 2 nodes; 0 chassis
  B. 2 nodes; 1 chassis
  C. 4 nodes; 1 chassis
  D. 4 nodes; 2 chassis
  C. 4 nodes; 1 chassis

• Question 4:

  A customer wishes to back up their Isilon cluster via NDMP using a software package that supports NDMP connectivity. The backup process will require the cluster to create a point-in-time copy of the directory to be backed up. Which OneFS feature(s) will need to be licensed?

  A. NDMP only
  B. No additional licenses are required
  C. SnapshotIQ only
  D. SnapshotIQ and NDMP
  B. No additional licenses are required

• Question 5:

  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?

  A. None
  B. One
  C. Three
  D. Two
  A. None

• Question 6:

  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. Validate the Workflow Profile Assessment and test the solution against your findings.
  B. Review you assumptions and ask the customer what business issue you're solving.
  C. Provide the CIO with the findings and gain commitment to a Proof of Concept.
  D. Complete your Solution Design Document and forward to EMC consulting.
  A. Validate the Workflow Profile Assessment and test the solution against your findings.

• Question 7:

  -- 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 -

  Currently, the workflows are being limited by the network access to the Isilon cluster. What would result in the fastest possible network throughput?

  A. Move analysis infrastructure to dedicated 10G network.
  B. Add four A-Series accelerator nodes.
  C. Use LACP to aggregate the network connections.
  D. Implement jumbo frames.
  A. Move analysis infrastructure to dedicated 10G network.

• Question 8:

  Your customer has an Isilon cluster with five X400 nodes and four 72NL nodes. A SmartPools policy moves data to the NL nodes after 60 days of inactivity. The customer wants to expand the archive tier by at least 150 TB and would like to manage a single archive pool.

  Which nodes should be added to the cluster?

  A. Three NL400 nodes with 2TB drives
  B. Three X400 nodes with 1TB drives
  C. Two NL400 nodes with 4TB drives
  D. Two X400 nodes with 3TB drives
  A. Three NL400 nodes with 2TB drives

• Question 9:

  There is a concern that there are not enough physical switch ports available for the Isilon cluster in a new implementation with SMB and ICAP requirements. What course of action should be taken?

  A. Team the NICs across the nodes and just add one connection to minimize the ports required.
  B. The customer needs to provide more switch ports for the implementation
  C. Create a SmartConnect zone across all ports but do not connect all of them
  D. Leave the archival nodes off the external network switch to save switch ports
  B. The customer needs to provide more switch ports for the implementation

• Question 10:

  Which Isilon OneFS job, that runs manually, is responsible for examining the entire file system for inconsistencies?

  A. IntegrityScan
  B. MediaScan
  C. AutoBalance
  D. FlexProtect
  A. IntegrityScan