EMC EMC Certifications E20-555 Questions & Answers

• Question 91:

  Which license is a prerequisite for enabling CloudPools?

  A. SmartPools

  B. FilePools

  C. DiskPools

  D. NodePools

  Correct Answer: A

• Question 92:

  In OneFS, what is the largest number of disks in a subpool?

  A. 234

  B. 256

  C. 468

  D. 864

  Correct Answer: B

• Question 93:

  An Isilon customer needs to grant a specific administrator on RBAC privilege. What does the customer need to do?

  A. Add the selected user account to the appropriate RBAC role and facilitate user access to the System access zone.

  B. Add the selected user account to the local provider, grant the appropriate RBAC role, and facilitate access to the production access zone only.

  C. Add the selected user account to the remote provider, grant the appropriate RBAC role, and facilitate access to the production access zone only.

  D. Add the selected user account to the local provider, grant the appropriate RBAC role, and facilitate access to both the production access zone and System access zone.

  Correct Answer: A

• Question 94:

  What is an accurate statement when configuring an Isilon Gen 6 cluster with Compliance SmartLock?

  A. Standard directories containing data can be converted to a Compliance SmartLock directory

  B. SmartLock compliance directories can only be migrated from the recovery cluster

  C. Compliance directories have a system clock that is set once and cannot be changed after being set

  D. Failback of SmartLock compliance mode directories is not supported for Isilon Gen 6 clusters

  Correct Answer: B

• Question 95:

  Which tool measures actual throughput and produces sophisticated graphs?

  A. MiTrend

  B. WireShark

  C. Perfmon

  D. IOZone

  Correct Answer: B

• Question 96:

  You are setting up SmartPools on the cluster. Which Microsoft Windows system tool will illustrate the difference in performance experienced by clients connecting to different tiers of storage?

  A. IOZone

  B. Iometer

  C. iostat

  D. MiTrend

  Correct Answer: A

• Question 97:

  An Isilon customer is experiencing less than expected performance and poor space utilization with their cluster. They are using the X400 nodes with an N+2d:1n protection policy to host web server log data. Upon further analysis, the customer discovers that the web servers write log files 64KiB in size. The log files are then accessed by an analytics application for reporting purposes. What should be done to increase the write performance of the cluster?

  A. Change the protection scheme to a mirroring policy

  B. Add S-Series storage nodes to the cluster

  C. Add A-Series Performance Accelerator nodes to the cluster

  D. Change the SSD strategy on the cluster

  Correct Answer: C

• Question 98:

  You have received a critical task that requires immediate analysis of system performance. Captured data will later be processed by MiTrend, but a current assessment is not available.

  Which utility will quickly provide IOPS associated with reads and writes, CPU utilization, and I/O scheduler wait time?

  A. tcpdump

  B. iostat

  C. Wireshark

  D. NFSstat

  Correct Answer: B

• Question 99:

  On an 18-node Isilon cluster with the default protection setting, what is the actual layout of a 128 KB file?

  A. 2x

  B. N+2n

  C. 3x

  D. N+2d:1n

  Correct Answer: B

• Question 100:

  A system administrator has identified a problem on the cluster and has opened a service request on support.emc.com. They initiate isi_gather_info but it is taking a long time to complete. What can they do to speed up the completion of isi_gather_info for the next run?

  A. Collect the required logs from the syslog server

  B. Restart the CELOG daemon

  C. Increase the speed of the network link

  D. Exclude the specified tool(s) from being gathered

  Correct Answer: C