E20-555 EMC Exam Questions and Free Practice Test

Question 67

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

Correct Answer:A

Question 68

In an Isilon environment, which event will avoid Dynamic IP Address reallocation?

A. Client is added to the cluster

B. Failure of the back-end network

C. Node reboot

D. Cluster split

Correct Answer:D

Question 69

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

Correct Answer:B

Question 70

Which tool is used to perform a cluster-wide kernel configuration change on an Isilon Gen 6 cluster?

A. sysct1

B. isi_tardis

C. isi_for_array

D. gconfig

Correct Answer:A

Question 71

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 LevelAdditional Directory Level ProtectionsSnapshots and Replication

B. WORM requirementsNetwork ports for replicationSnapshots for user restores

C. Default Cluster Protection LevelBackup Windows and ProcessesConcurrency of user access

D. Protocols (SMB, NFS, FTP, HTTP, HDFS)Authentication and Directory ServicesPerformance and Latency Concerns

Correct Answer:A

Question 72

There is a need to carry out a tech refresh of an Isilon cluster. Old nodes must be removed because of space constrains in the data center. What methodology is least disruptive and will retain the file system structure, configuration, data, and DNS information?

A. Install the new nodes as a new cluster and use SyncIQ to replicate the data to the new nodes

B. Add the new nodes to the cluster and use SmartFail to move the data to the new nodes

C. Install new nodes into the cluster and use SyncIQ to replicate the data from the old to the new nodes

D. Install the new modes into the cluster and migrate using a host-based utility

Correct Answer:C

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