EMC EMC Certifications E20-807 Questions & Answers

• Question 31:

  In addition to Storage, Hosts, Performance, and Support, what other Unisphere for VMAX sections are available for selection of an individual VMAX3 array?

  A. Data Protection, Database and System

  B. Replication, Database, and System

  C. Data Protection, databases, and Applications

  D. Data Protection, System, and Applications

  Correct Answer: A

  Reference: https://uk.emc.com/collateral/TechnicalDocument/docu59483.pdf

• Question 32:

  A company's regulatory controls require all management accounts used by individuals with access to data stored on storage systems must comply with password strength and active duration policy.

  What should be used to meet this requirement?

  A. LDAP-SSL

  B. X.509 Certificate

  C. Local Unisphere

  D. Windows Local

  Correct Answer: B

• Question 33:

  With a response time of 2 ms, the utilization is at 50%. Based on Little's Law, what is the new service time if the utilization increases to 80%?

  A. 1ms

  B. 2 ms

  C. 4 ms

  D. 5 ms

  Correct Answer: D

• Question 34:

  Refer to the Exhibit.

  

  SRDF/Star has been deployed on VMAX3 arrays. Star protection has been enabled. Where are the active and inactive SDDF sessions located during normal operations?

  A. Site A. Two active sessions Site B. One inactive session

  B. Site A. Two active sessions Site C. One inactive session

  C. Site B. Two inactive sessions Site C. Two inactive session

  D. Site B. Two active sessions Site C. One inactive session

  Correct Answer: B

• Question 35:

  A server is hosting an online application and is experiencing performance issues. Which component of the architectural layer has the lowest probability of impacting performance?

  A. Operating System

  B. Server

  C. Application

  D. Disk

  Correct Answer: A

• Question 36:

  When FAST.X is used to access five VNX arrays from a single VMAX3, what is the minimum number of DX ports required?

  A. 4

  B. 10

  C. 20

  D. 40

  Correct Answer: C

  DX directors are configured in dual initiator (DI) pairs like traditional DAs. They are fully redundant like DAs and, when necessary, a failing director fails over to the other, fully functioning director in the DI pair. EMC requires a minimum of four paths to external devices. This means that at least four ports belonging to a single DX dual-initiator pair must be configured.

• Question 37:

  Based on the exhibit, where is data considered to be in motion?

  

  A. SAN and replication network

  B. Host, SAN, and arrays

  C. Host and arrays

  D. SAN, arrays, and replication network

  Correct Answer: C

• Question 38:

  A VDI deployment is planned for an environment that consists of VMAX3 and XtremIO. The data will have a high degree of deduplication and will require QoS and VVOL support. How can the existing infrastructure be leverage while minimizing increased storage capacity?

  A. Use XtremIO for the new deployment

  B. Use FAST.X with XtremIO for the new deployment

  C. Add full capacity required for VMAX3

  D. Add half the capacity required for the VMAX and use compression

  Correct Answer: A

• Question 39:

  A VMAX3 with internal tiers of EFD and 10k drives is using FAST.X with XtremIO. How can the existing infrastructure be leverage while minimizing increased storage capacity? in the impl.bin file?

  A. BE_centric

  B. Default

  C. DX.Heavy

  D. FE_centric

  Correct Answer: B

• Question 40:

  What is a characteristic of sequential read I/Os on a VMAX3 array?

  A. Prefetch task will stop when sequential I/O stops

  B. Higher priority than the host I/O

  C. DA will start the prefetch task

  D. tracks are red into cache by the frontend director

  Correct Answer: C

  Reference: https://uk.emc.com/collateral/technical-documentation/docu55786-vmax3-service-level-pro-fully-automated-storage.pdf (16)