EMC EMC Certifications E20-555 Questions & Answers

• Question 101:

  What is the best case performance for Backup Accelerator when backing up to LTO-4 or LTO-5 drives?

  A. 864 GB/hr

  B. 1.7 TB/hr

  C. 2.6 TB/hr

  D. 3.4 TB/hr

  Correct Answer: C

• Question 102:

  Which Isilon feature increases available space by consolidating copies of identical blocks of data?

  A. SmartDedupe

  B. SmartQuotas

  C. Compliance

  D. FlexProtect

  Correct Answer: A

• Question 103:

  Which Isilon tool can be run from the cluster to display Isilon statistics such as CPU activity?

  A. iperf

  B. iostat

  C. InsightIQ

  D. MiTrend

  Correct Answer: C

  Explanation: InsightIQ 4.1 introduces a new report that displays statistics Reference: https://www.emc.com/collateral/software/data-sheet/h8317-ds-isilon-insightiq.pdf

• Question 104:

  What is a characteristic of predefined sets of privileges of OneFS built-in administrator roles?

  A. Can be modified without limitation

  B. Can be nested into other roles

  C. Cannot be modified

  D. Can be modified by selected users

  Correct Answer: C

  Explanation: OneFS includes built-in administrator roles with predefined sets of privileges that cannot be modified. Reference: http://doc.isilon.com/onefs/7.0.2/help/en-us/GUID-334C6D17-0F34-4685-B6A4-2D7EFE5C6E3B.html

• Question 105:

  A customer has an Isilon cluster with 6 nodes and a single 4-core CPU per node. The default configuration for SyncIQ workers per CPU core and SyncIQ workers per node per job limits are used. How many SyncIQ workers are available for the Isilon cluster?

  A. 24

  B. 64

  C. 96

  D. 192

  Correct Answer: B

• Question 106:

  You have been tasked with designing a solution for a company that wants to logically separate access to their Isilon storage by department. Each of their major internal departments currently uses different Active Directory authentication providers. In addition, they want to provide Isilon storage access to these departments while maintaining their authentication separation.

  Which feature will provide this functionality?

  A. Access Zones

  B. Network Segmentation

  C. Multi-Homing

  D. VLAN Trunking

  Correct Answer: A

• Question 107:

  Which OneFS feature enables you to host multiple tenants from mutually untrusting AD authentication environments from the same DNS namespace?

  A. SmartConnect

  B. Groupnets

  C. SmartQuotas

  D. Acces Zones

  Correct Answer: D

  Reference: https://www.emc.com/collateral/white-papers/h13564-wp-emc-isilon-analytics-multitenancy.pdf

• Question 108:

  A company has purchased an Isilon cluster. The storage administrator knows they will have a large number of clients with similar workloads connecting to the cluster through NFS, and connections will be maintained for a long time. Which two connection balancing policies should be recommended for initial use? (Choose two.)

  A. Round Robin and Connection Count

  B. CPU Utilization and Network Throughput

  C. Round Robin and CPU Utilization

  D. Connection Count and Network Throughput

  Correct Answer: AB

  Reference: http://doc.isilon.com/onefs/7.0.0/help/en-us/GUID-CBD3BE08-2152-41C5-8451-EDA5E3AC972A.html

• Question 109:

  The data access pattern on a Gen 6 Isilon cluster in Concurrency. What describes this workload?

  A. Multiple stream workflows, no prefetching

  B. Multiple clients accessing the same data; aggressive prefetching

  C. Multiple clients accessing the same data; moderate prefetching

  D. Single stream workflows, aggressive prefetching

  Correct Answer: D

• Question 110:

  A company wants to have their new Gen 6 Isilon cluster benchmarked for a UNIX environment. What commonly available open source tool is typically used to test an Isilon cluster's performance for this environment?

  A. sar

  B. Perfmon

  C. IOZone

  D. Iometer

  Correct Answer: D