EMC E20-555 Online Practice Questions and Exam Preparation

EMC E20-555 Online Questions & Answers

• Question 11:

  Your customer is looking for a storage solution that will be able to store seven million 3 MB files, which are written and seldom accessed. Read and write operations are both completed by a web-based application, which requires 1.3 Gbps throughput. The customer's network has not been upgraded in many years, so the network interfaces are 1Gbps.

  Which cluster configuration would best meet the customer's requirements?

  A. 3 NL400 nodes
  B. 3 X400 nodes
  C. 4 X200 nodes
  D. 5 S200 nodes
  D. 5 S200 nodes

• Question 12:

  If Dynamic IP Address Allocation is being configured in Isilon SmartConnect, which policy setting needs to be determined?

  A. Rebalance
  B. Load Balancing
  C. Static
  D. Dynamic
  A. Rebalance

• Question 13:

  For concurrent I/O, how do SmartCache and Endurant Cache differ?

  A. Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM
  B. Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache
  C. SmartCache immediately commits the write to NVRAM on the local node and one peer node
  D. SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file
  A. Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM

• Question 14:

  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?

  A. DataNode and NameNode
  B. DataNode and ComputeNode
  C. ComputeNode and NameNode
  D. NameNode and TaskTracker
  A. DataNode and NameNode

• Question 15:

  What is the recommended namespace path for the access zone on a new Isilon cluster with SyncIQ license?

  A. /ifs//data
  B. /ifs///data
  C. /ifs//data
  D. /ifs///data
  A. /ifs//data

• Question 16:

  Refer to the exhibit.

  

  Which tool was used to create this output and what is the most telling characteristic?

  A. nfsstat and write-intensive access
  B. iostat and write-intensive access
  C. Read-intensive access and nfsstat
  D. isi_netlogger and moderate metadata read operations
  A. nfsstat and write-intensive access

• Question 17:

  If business objectives such as value and SLAs are considered, which Isilon license feature provides the ability to manage performance and the cost of data in a cluster?

  A. SmartPools
  B. SmartConnect
  C. SyncIQ
  D. SmartQuota
  A. SmartPools

• Question 18:

  An Isilon customer created a SyncIQ policy to replicate data from a primary cluster to an offsite secondary cluster. The primary cluster becomes unavailable, and the customer has completed a failover onto the secondary cluster.

  The primary cluster becomes available again, so the customer would like to fail back data to the primary cluster. The failback process does not replicate data.

  What is the most likely reason the failback policy does not replicate data to the primary cluster?

  A. Clusters are not sharing an Infiniband switch
  B. Secondary cluster has modified files on it
  C. Original policy was for synchronization
  D. Policy contains a SmartLock directory
  C. Original policy was for synchronization

• Question 19:

  What is the maximum number of data stripes in a Gen 6 Isilon?

  A. 16
  B. 20
  C. 128
  D. 144
  C. 128

• Question 20:

  What is the minimum number of connected and available nodes required to maintain quorum in a 25-node Isilon cluster?

  A. 10
  B. 12
  C. 13
  D. 17
  C. 13